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PSYCHIATRY AND NEUROLOGY (833 journals)                  1 2 3 4 5 | Last

Showing 1 - 200 of 833 Journals sorted alphabetically
Academic Psychiatry     Full-text available via subscription   (Followers: 32)
Academic Psychiatry and Psychology Journal : APPJ     Open Access   (Followers: 13)
ACS Chemical Neuroscience     Hybrid Journal   (Followers: 24)
Acta Neurochirurgica     Hybrid Journal   (Followers: 7)
Acta Neurologica Belgica     Hybrid Journal   (Followers: 3)
Acta Neurológica Colombiana     Open Access   (Followers: 2)
Acta Neurologica Scandinavica     Hybrid Journal   (Followers: 6)
Acta Neuropathologica     Hybrid Journal   (Followers: 6)
Acta Neuropathologica Communications     Open Access   (Followers: 1)
Acta Neuropsychiatrica     Hybrid Journal   (Followers: 6)
Acta Psychiatrica Scandinavica     Hybrid Journal   (Followers: 44)
Actas Españolas de Psiquiatría     Free   (Followers: 2)
Activitas Nervosa Superior     Hybrid Journal  
ADHD Attention Deficit and Hyperactivity Disorders     Hybrid Journal   (Followers: 28)
ADHD Report The     Full-text available via subscription   (Followers: 12)
Administration and Policy in Mental Health and Mental Health Services Research     Partially Free   (Followers: 20)
Adolescent Psychiatry     Hybrid Journal   (Followers: 12)
Adolescent Research Review     Hybrid Journal   (Followers: 3)
Advances in Alzheimer's Disease     Open Access   (Followers: 16)
Advances in Clinical Neuroscience and Rehabilitation     Free   (Followers: 31)
Advances in Eating Disorders : Theory, Research and Practice     Hybrid Journal   (Followers: 18)
Advances in Mental Health     Hybrid Journal   (Followers: 91)
Advances in Parkinson's Disease     Open Access   (Followers: 1)
Advances in School Mental Health Promotion     Partially Free   (Followers: 12)
African Journal of Neurological Sciences     Open Access  
African Journal of Psychiatry     Full-text available via subscription   (Followers: 3)
Aggression and Violent Behavior     Hybrid Journal   (Followers: 485)
Aggressive Behavior     Hybrid Journal   (Followers: 22)
Aging & Mental Health     Hybrid Journal   (Followers: 37)
Aging, Neuropsychology, and Cognition     Hybrid Journal   (Followers: 50)
AJOB Neuroscience     Hybrid Journal   (Followers: 5)
Aktuelle Neurologie     Hybrid Journal   (Followers: 9)
Alzheimer Disease & Associated Disorders     Hybrid Journal   (Followers: 20)
Alzheimer's & Dementia     Hybrid Journal   (Followers: 60)
Alzheimer's Research & Therapy     Open Access   (Followers: 4)
American Journal of Alzheimer's Disease and Other Dementias     Hybrid Journal   (Followers: 19)
American Journal of Clinical Hypnosis     Hybrid Journal   (Followers: 6)
American Journal of Medical Genetics Part B: Neuropsychiatric Genetics     Hybrid Journal   (Followers: 4)
American Journal of Neuroprotection and Neuroregeneration     Full-text available via subscription   (Followers: 2)
American Journal of Psychiatric Rehabilitation     Hybrid Journal   (Followers: 13)
American Journal of Psychiatry     Full-text available via subscription   (Followers: 243)
Amyotrophic Lateral Sclerosis and Frontotemporal Degeneration     Hybrid Journal   (Followers: 2)
Analitika : Jurnal Magister Psikologi Uma     Open Access  
Annales Médico-psychologiques, revue psychiatrique     Full-text available via subscription   (Followers: 5)
Annals of Behavioral Medicine     Hybrid Journal   (Followers: 15)
Annals of Child Neurology     Open Access   (Followers: 1)
Annals of Clinical and Translational Neurology     Open Access   (Followers: 1)
Annals of Clinical Psychiatry : The official Journal of the American Academy of Clinical Psychiatrists     Hybrid Journal   (Followers: 28)
Annals of General Psychiatry     Open Access   (Followers: 28)
Annals of Indian Academy of Neurology     Open Access   (Followers: 3)
Annals of Indian Psychiatry     Open Access  
Annals of Neurology     Hybrid Journal   (Followers: 61)
Annals of Neurosciences     Open Access   (Followers: 4)
Annals of Psychiatry and Treatment     Open Access   (Followers: 2)
Annual Review of Neuroscience     Full-text available via subscription   (Followers: 57)
Anxiety, Stress & Coping: An International Journal     Hybrid Journal   (Followers: 27)
Aphasiology     Hybrid Journal   (Followers: 55)
Applied Neuropsychology : Adult     Hybrid Journal   (Followers: 45)
Applied Neuropsychology : Child     Hybrid Journal   (Followers: 28)
Archives of Clinical Neuropsychology     Hybrid Journal   (Followers: 32)
Archives of Neuroscience     Open Access   (Followers: 6)
Archives of Psychiatric Nursing     Hybrid Journal   (Followers: 29)
Archives of Suicide Research     Hybrid Journal   (Followers: 9)
Archives of Women's Mental Health     Hybrid Journal   (Followers: 18)
Archivos de Neurociencias     Open Access   (Followers: 3)
Arquivos Brasileiros de Neurocirurgia : Brazilian Neurosurgery     Open Access  
Arquivos de Neuro-Psiquiatria     Open Access  
Art Therapy Online     Open Access   (Followers: 4)
Asia Pacific Journal of Counselling and Psychotherapy     Hybrid Journal   (Followers: 11)
Asian Journal of Psychiatry     Hybrid Journal   (Followers: 2)
ASN Neuro     Open Access   (Followers: 2)
Assessment     Hybrid Journal   (Followers: 17)
Assessment and Treatment of Child Psychopathology and Developmental Disabilities     Full-text available via subscription   (Followers: 4)
Atherosclerosis     Hybrid Journal   (Followers: 13)
Atherosclerosis Supplements     Hybrid Journal   (Followers: 1)
Audiology and Neurotology     Full-text available via subscription   (Followers: 9)
Audiology and Neurotology Extra     Open Access   (Followers: 1)
Australasian Journal of Neuroscience     Open Access   (Followers: 2)
Australasian Psychiatry     Hybrid Journal   (Followers: 18)
Australian & New Zealand Journal of Psychiatry     Hybrid Journal   (Followers: 29)
Autism & Developmental Language Impairments     Open Access   (Followers: 12)
Autism and Developmental Disorders     Open Access   (Followers: 9)
Autism Research     Hybrid Journal   (Followers: 52)
Autism Research and Treatment     Open Access   (Followers: 34)
Autism's Own     Open Access   (Followers: 6)
Autism-Open Access     Open Access   (Followers: 8)
Autonomic Neuroscience     Hybrid Journal   (Followers: 10)
Autonomy, the Critical Journal of Interdisciplinary Autism Studies     Open Access   (Followers: 5)
Avicenna Journal of Neuro Psycho Physiology     Open Access  
Basal Ganglia     Hybrid Journal  
Basic and Clinical Neuroscience     Open Access   (Followers: 9)
Behavior Therapy     Hybrid Journal   (Followers: 54)
Behavioral and Brain Functions     Open Access   (Followers: 3)
Behavioral and Brain Sciences     Hybrid Journal   (Followers: 38)
Behavioral and Cognitive Neuroscience Reviews     Hybrid Journal   (Followers: 26)
Behavioral Healthcare     Full-text available via subscription   (Followers: 8)
Behavioral Medicine     Hybrid Journal   (Followers: 9)
Behavioral Sciences     Open Access   (Followers: 4)
Behavioral Sleep Medicine     Hybrid Journal   (Followers: 15)
Behavioural Brain Research     Hybrid Journal   (Followers: 19)
Behavioural Neurology     Open Access   (Followers: 9)
Behavioural Processes     Hybrid Journal   (Followers: 9)
Biological Psychiatry     Hybrid Journal   (Followers: 53)
Biological Psychiatry: Cognitive Neuroscience and Neuroimaging     Hybrid Journal   (Followers: 11)
Biologically Inspired Cognitive Architectures     Hybrid Journal   (Followers: 2)
Biology of Mood & Anxiety Disorders     Open Access   (Followers: 6)
Biomarkers in Neuropsychiatry     Open Access   (Followers: 1)
BioMolecular Concepts     Open Access   (Followers: 2)
Bipolar Disorders     Hybrid Journal   (Followers: 11)
BJPsych Advances     Full-text available via subscription   (Followers: 57)
BJPsych Bulletin     Full-text available via subscription   (Followers: 19)
BJPsych International     Open Access   (Followers: 2)
BJPsych Open     Open Access   (Followers: 3)
Blue Books of Neurology     Full-text available via subscription   (Followers: 1)
BMC Neurology     Open Access   (Followers: 22)
BMC Neuroscience     Open Access   (Followers: 17)
BMC Psychiatry     Open Access   (Followers: 38)
Borderline Personality Disorder and Emotion Dysregulation     Open Access   (Followers: 10)
Brain     Hybrid Journal   (Followers: 78)
Brain & Life     Full-text available via subscription   (Followers: 3)
Brain and Behavior     Open Access   (Followers: 15)
Brain and Cognition     Hybrid Journal   (Followers: 38)
Brain and Development     Full-text available via subscription   (Followers: 5)
Brain and Language     Hybrid Journal   (Followers: 68)
Brain and Mind     Hybrid Journal   (Followers: 6)
Brain and Neuroscience Advances     Open Access  
Brain Behavior and Evolution     Full-text available via subscription   (Followers: 9)
Brain Communications     Open Access   (Followers: 3)
Brain Disorders & Therapy     Open Access   (Followers: 1)
Brain Hemorrhages     Open Access   (Followers: 1)
Brain Imaging and Behavior     Hybrid Journal   (Followers: 9)
Brain Impairment     Full-text available via subscription   (Followers: 2)
Brain Informatics     Open Access   (Followers: 1)
Brain Injury     Hybrid Journal   (Followers: 31)
Brain Pathology     Hybrid Journal   (Followers: 5)
Brain Research     Hybrid Journal   (Followers: 26)
Brain Research Bulletin     Hybrid Journal   (Followers: 5)
Brain Sciences     Open Access   (Followers: 5)
Brain Stimulation     Hybrid Journal   (Followers: 8)
Brain Structure and Function     Partially Free   (Followers: 9)
Brain Topography     Hybrid Journal   (Followers: 2)
Brain, Behavior, and Immunity     Hybrid Journal   (Followers: 11)
Brazilian Journal of Pain (BrJP)     Open Access  
British Journal of Mental Health Nursing     Full-text available via subscription   (Followers: 23)
British Journal of Music Therapy     Hybrid Journal   (Followers: 8)
British Journal of Pain     Hybrid Journal   (Followers: 28)
British Journal of Psychiatry     Hybrid Journal   (Followers: 247)
British Journal of Social Psychology     Full-text available via subscription   (Followers: 41)
Canadian Journal of Behavioural Science     Full-text available via subscription   (Followers: 7)
Canadian Journal of Counselling and Psychotherapy / Revue canadienne de counseling et de psychothérapie     Hybrid Journal   (Followers: 10)
Canadian Journal of Neurological Sciences     Full-text available via subscription  
Canadian Journal of Psychiatry     Hybrid Journal   (Followers: 27)
Cannabis and Cannabinoid Research     Hybrid Journal   (Followers: 2)
Case Reports in Neurological Medicine     Open Access   (Followers: 1)
Case Reports in Neurology     Open Access   (Followers: 5)
Case Reports in Psychiatry     Open Access   (Followers: 17)
Cellular and Molecular Life Sciences (CMLS)     Hybrid Journal   (Followers: 5)
Central Nervous System Agents in Medicinal Chemistry     Hybrid Journal   (Followers: 1)
Cephalalgia     Hybrid Journal   (Followers: 8)
Cerebellum & Ataxias     Open Access   (Followers: 1)
Cerebral Cortex     Hybrid Journal   (Followers: 56)
Cerebrovascular Diseases     Full-text available via subscription   (Followers: 3)
Cerebrovascular Diseases Extra     Open Access  
Child and Adolescent Psychiatry and Mental Health     Open Access   (Followers: 28)
Child Neurology Open     Open Access   (Followers: 5)
Child Psychiatry & Human Development     Hybrid Journal   (Followers: 12)
Chinese Neurosurgical Journal     Open Access  
Chronic Stress     Open Access  
Ciencia Cognitiva     Open Access   (Followers: 3)
Clínica e Investigación en Arteriosclerosis     Full-text available via subscription  
Clinical and Experimental Neuroimmunology     Hybrid Journal   (Followers: 1)
Clinical and Translational Neuroscience     Open Access  
Clinical EEG and Neuroscience     Hybrid Journal   (Followers: 6)
Clinical Journal of Pain     Hybrid Journal   (Followers: 19)
Clinical Medicine Insights : Psychiatry     Open Access   (Followers: 10)
Clinical Neurology and Neurosurgery     Hybrid Journal   (Followers: 16)
Clinical Neuropathology     Full-text available via subscription   (Followers: 1)
Clinical Neuropharmacology     Hybrid Journal   (Followers: 4)
Clinical Neurophysiology     Full-text available via subscription   (Followers: 13)
Clinical Neurophysiology Practice     Open Access  
Clinical Neuropsychiatry     Open Access   (Followers: 2)
Clinical Practice & Epidemiology in Mental Health     Open Access   (Followers: 1)
Clinical Psychological Science     Hybrid Journal   (Followers: 12)
CNS & Neurological Disorders - Drug Targets     Hybrid Journal   (Followers: 3)
CNS Spectrums     Hybrid Journal   (Followers: 3)
Cognition     Hybrid Journal   (Followers: 231)
Cognitive and Behavioral Neurology     Hybrid Journal   (Followers: 10)
Cognitive and Behavioral Practice     Hybrid Journal   (Followers: 13)
Cognitive Neurodynamics     Hybrid Journal   (Followers: 2)
Cognitive Neuropsychiatry     Hybrid Journal   (Followers: 1)
Cognitive Neuropsychology     Hybrid Journal   (Followers: 40)
Cognitive Neuroscience     Hybrid Journal   (Followers: 29)
Cognitive Therapy and Research     Hybrid Journal   (Followers: 7)
Cognitive, Affective, & Behavioral Neuroscience     Full-text available via subscription   (Followers: 24)
Community Mental Health Journal     Hybrid Journal   (Followers: 18)
Comprehensive Psychiatry     Open Access   (Followers: 13)
Computational Brain & Behavior     Hybrid Journal  
Computational Psychiatry     Open Access   (Followers: 2)
Consciousness and Cognition     Hybrid Journal   (Followers: 39)
Contemporary Neurosurgery     Full-text available via subscription   (Followers: 4)

        1 2 3 4 5 | Last

Similar Journals
Journal Cover
Clinical Neurophysiology Practice
Journal Prestige (SJR): 0.152
Number of Followers: 0  

  This is an Open Access Journal Open Access journal
ISSN (Online) 2467-981X
Published by Elsevier Homepage  [3200 journals]
  • Method-of-limits; cold and warm perception thresholds at proximal and
           distal body regions

    • Abstract: Publication date: Available online 5 July 2018Source: Clinical Neurophysiology PracticeAuthor(s): Victoria Heldestad Lilliesköld, Erik NordhAbstractObjectiveThermal quantitative sensory testing with the ‘Method-of-Limits’ is an established rationale for detection of small nerve fiber dysfunction, but adequate reference values are crucial for such evaluations, regardless of the underlying cause. This study assessed reference data for cold- (CPT) and warm- (WPT) perception thresholds at both proximal and distal sites in eight body regions of the lower and upper extremities, all determined within the same test session for each subject.MethodsSeventy-five healthy subjects (aged 16-72 years) were tested according to the method-of-limit for CPT and WPT at the dorsum of the foot, the medial and lateral lower leg, the ventral thigh, the thenar eminence, the radial and ulnar part of the lower arm, and the anterior deltoid part of the upper arm.ResultsOverall, thermal perception thresholds (TPT) varied with test location, but were higher in the lower than in the upper part of the body, also WPT were generally higher than CPT. TPT at the dorsum foot highly correlated with age, while inconsistent correlations were noted between TPT and age or height at other tested locations.ConclusionThis study describes for the first time reference values at eight defined body regions, at both proximal and distal sites.SignificanceThe report enables refined evaluations of general small nerve fiber function, as assessed by quantitative thermal sensory testing with the Method-of-Limits.
       
  • Evaluation of SEPs in asphyxiated newborns using a 4-electrode aEEG brain
           monitoring set-up

    • Abstract: Publication date: Available online 30 June 2018Source: Clinical Neurophysiology PracticeAuthor(s): Päivi Nevalainen, Viviana Marchi, Marjo Metsäranta, Tuula Lönnqvist, Sampsa Vanhatalo, Leena LauronenAbstractObjectiveTo evaluate the reliability of recording cortical somatosensory evoked potentials (SEPs) in asphyxiated newborns using the 4-electrode setup applied in routine long-term amplitude-integrated EEG (aEEG) brain monitoring and to assess the number of averages needed for reliably detecting the cortical responses.MethodsWe evaluated median nerve SEPs in 50 asphyxiated full-term newborns. The SEP interpretation (present or absent) from the original recordings with 21-electrodes and approximately 600 trials served as the reference. This was compared to SEP classification (absent, present, or unreliable) based on a reduced (300 or 150) number of averages, and to classification based on only four electrodes (F3, P3, F4, P4).ResultsCompared to the original classification, cortical SEPs were uniformly interpreted as present or absent in all 50 newborns with the 4-electrode setup and 600 averages. Reducing number of averages to 300 still resulted in correct SEP interpretation in 49/50 newborns with 21-electrode setup, and 46/50 newborns with 4-electrode setup.ConclusionsEvaluation of early cortical neonatal SEPs is reliable from the 4-electrode setup commonly used in aEEG monitoring. SEP is discernible in most newborns with 300 averages.SignificanceAdding SEP into routine aEEG monitoring offers an additional tool for early neonatal neurophysiological evaluation.
       
  • Modified Motor Unit Number Index (MUNIX) Algorithm for Assessing
           Excitability of Alfa Motor Neuron in Spasticity

    • Abstract: Publication date: Available online 25 June 2018Source: Clinical Neurophysiology PracticeAuthor(s): Serkan Uslu, Tunca Nüzket, Hilmi UysalAbstractObjectiveThe understanding of the spasticity mechanism is still a problem in the literature as its definition can be made based on more than one parameter. Therefore, we studied alpha motor neuron excitability, dynamic changes based on force production and Patellar T Reflex in spasticity and healthy control group.MethodsAlpha motor neuron excitability, force production and Patellar T Reflex were evaluated through three different test protocols. Motor Unit Number Index (MUNIX) measurement was applied for understanding motor neuron pool properties in the first protocol. Voluntary force production and Patellar T Reflex parameters evaluated through voluntary force production and triggering Patellar T Reflex. Twenty spasticity and twenty healthy volunteers participated in the study.ResultsIn the spasticity group, both MUNIX numbers and Motor Unit Size Index (MUSIX) numbers were lower than in the control group. The results for the Ideal Case Motor Unit Count (ICMUC) parameter show that there is no significant difference between spasticity and healthy individuals for low level contractions, while there is a significant difference in high level contractions (p
       
  • A quantitative EEG and MRI analysis of intermittent temporal slowing in
           the elderly

    • Abstract: Publication date: Available online 25 June 2018Source: Clinical Neurophysiology PracticeAuthor(s): Thomas Krøigård, Sisse Dahl Christensen, Hans HøgenhavenAbstractObjectiveWhereas the correlation between diffuse slowing of EEG activity and neurodegenerative diseases such as Alzheimer’s disease is well established, intermittent slowing over the temporal regions, which is a frequent finding in the elderly, does not have a specific clinical correlate. In this study, we compared quantitative EEG parameters between patients with temporal slowing with no signs of neurological disease and controls to evaluate cortical function in the temporal lobes and other cerebral regions. We also compared the width of the temporal lobes on magnetic resonance imaging (MRI).MethodsMean dominant frequency and relative power in delta, theta, alpha, and beta frequency bands were examined in 20 patients older than 60 years with intermittent temporal slowing and 20 age-matched controls without significant lesions on MRI or medical conditions known to affect the EEG. Furthermore, the correlation between the frequency of temporal slowing and the mean dominant frequency and the width of the medial temporal lobes on MRI were examined.ResultsMean dominant frequency and the relative power in the beta frequency band was lower in patients with temporal slowing than in controls in all of the cortical regions examined. No significant correlation was found between the frequency of slowing and the mean dominant frequency. There was no significant difference in the width of the medial temporal lobes.ConclusionsIntermittent temporal slowing was correlated with diffusely reduced mean dominant frequency and a shift in relative power to lower frequency bands.SignificanceThe results suggest that subclinical diffuse cerebral pathology may be present in subjects with intermittent temporal slowing, but prospective studies including tests of cognitive function, cerebral perfusion, metabolic status, and advanced neuroimaging should be conducted.
       
  • Responsive neurostimulation for epilepsy: more than stimulation

    • Abstract: Publication date: Available online 23 June 2018Source: Clinical Neurophysiology PracticeAuthor(s): Jayant N. Acharya
       
  • Seizure localization by chronic ambulatory electrocorticography

    • Abstract: Publication date: Available online 21 April 2018Source: Clinical Neurophysiology PracticeAuthor(s): Alvin Y. Chan, Robert C. Knowlton, Edward F. Chang, Vikram R. RaoAbstractAimsTo present two patients with medically-refractory focal epilepsy who, following non-diagnostic intracranial monitoring studies, had seizures localized by chronic ambulatory electrocorticography with an implanted neurostimulation device.MethodsCase reports with clinical details and electrocorticograms showing seizuresResultsUsing electrodes placed at the suspected seizure onset zones, the neurostimulator recorded seizures in both patients at long intervals following implantation (49 days and 7.5 months).ConclusionsChronic ambulatory electrocorticography can provide valuable diagnostic information when there is a narrow hypothesis about seizure localization, though there are important caveats related to limited spatial sampling.
       
  • A Short Study of Abbreviated EEG

    • Abstract: Publication date: Available online 16 April 2018Source: Clinical Neurophysiology PracticeAuthor(s): G. Bryan Young
       
  • Diagnostic utility of eight-channel EEG for detecting generalized or
           hemispheric seizures and rhythmic periodic patterns

    • Abstract: Publication date: 2018Source: Clinical Neurophysiology Practice, Volume 3Author(s): Kapil Gururangan, Babak Razavi, Josef ParviziAbstractObjectivesTo compare the diagnostic utility of electroencephalography (EEG) using reduced, 8-channel montage (rm-EEG) to full, 18-channel montage (fm-EEG) for detection of generalized or hemispheric seizures and rhythmic periodic patterns (RPPs) by neurologists with extensive EEG training, neurology residents with minimal EEG exposure, and medical students without EEG experience.MethodsWe presented EEG samples in both fm-EEG (bipolar montage) and rm-EEG (lateral leads of bipolar montage) to 20 neurologists, 20 residents, and 42 medical students. Unanimous agreement of three senior epileptologists defined samples as seizures (n = 7), RPPs (n = 10), and normal or slowing (n = 20). Differences in median accuracy, sensitivity, and specificity were assessed using Wilcoxon signed-rank tests.ResultsFull and reduced EEG demonstrated similar accuracy when read by neurologists (fm-EEG: 95%, rm-EEG: 95%, p = 0.29), residents (fm-EEG: 80%, rm-EEG: 80%, p = 0.05), and students (fm-EEG: 60%, rm-EEG: 51%, p = 0.68). Moreover, neurologists’ sensitivity for detecting seizure activity was comparable between fm-EEG (100%) and rm-EEG (98%) (p = 0.17). Furthermore, the specificity of rm-EEG for seizures and RPP (neurologists: 100%, residents: 90%, students: 86%) was significantly greater than that of fm-EEG (neurologists: 93%, p = 0.03; residents: 80%, p = 0.01; students: 69%, p 
       
  • Influence of placement sites of the active recording electrode on CMAP
           configuration in the trapezius muscle

    • Abstract: Publication date: 2018Source: Clinical Neurophysiology Practice, Volume 3Author(s): Shoji Hemmi, Katsumi Kurokawa, Taiji Nagai, Akio Asano, Toshio Okamoto, Tatsufumi Murakami, Masahito Mihara, Yoshihide SunadaAbstractObjectiveWe investigated how the active electrode placement site influences compound muscle action potential (CMAP) configuration of the upper trapezius muscle (TM).MethodsA nerve conduction study of the accessory nerve was performed, and the CMAPs obtained with two different placement sites, i.e., placement of the active recording electrode on the belly of the upper TM (CMAP-A) and placement of the electrode 2 cm behind the belly (CMAP-B), were compared. CMAPs were also obtained with the active recording electrode placed in the supraspinous fossa (CMAP-C).ResultsAll CMAPs were recorded from 21 healthy volunteers. The mean peak-to-peak amplitude of CMAP-B was 3.4 mV higher than that of CMAP-A (11.0 ± 4.0 mV vs. 14.4 ± 4.9 mV; P 
       
  • Static magnetic field stimulation applied over the cervical spinal cord
           can decrease corticospinal excitability in finger muscle

    • Abstract: Publication date: 2018Source: Clinical Neurophysiology Practice, Volume 3Author(s): Kento Nakagawa, Kimitaka NakazawaAbstractObjectiveTranscranial static magnetic field stimulation has recently been demonstrated to modulate cortical excitability. In the present study, we investigated the effect of transspinal static magnetic field stimulation (tsSMS) on excitability of the corticospinal tract.MethodsA compact magnet for tsSMS (0.45 Tesla) or a stainless steel cylinder for sham stimulation was positioned over the neck (C8 level) of 24 able-bodied subjects for 15 min. Using 120% of the resting motor threshold transcranial magnetic stimulation intensity, motor evoked potentials (MEPs) were measured from the first digital interosseous muscle before, during, and after the tsSMS or sham intervention.ResultsCompared with baseline MEP amplitudes were decreased during tsSMS, but not during sham stimulation. Additionally, during the intervention, MEP amplitudes were lower with tsSMS than sham stimulation, although these effects did not last after the intervention ceased.ConclusionsThe results suggest that static magnetic field stimulation of the spinal cord by a compact magnet can reduce the excitability of the corticospinal tract.SignificanceTransspinal static magnetic field stimulation may be a new non-invasive neuromodulatory tool for spinal cord stimulation. Its suppressive effect may be applied to patients who have pathological hyperexcitability of the spinal neural network.
       
  • Gender, side to side and BMI differences in long thoracic nerve conduction
           velocity: A novel technique

    • Abstract: Publication date: 2018Source: Clinical Neurophysiology Practice, Volume 3Author(s): Kathleen Galloway, Adarsha Gautam, Emily Hogan, Emmy Rice, Chequil WoodardAbstractObjectivesThe purpose of this study was to describe a new technique to record long thoracic nerve conduction velocity through the axilla as well as to assist in establishing normative values for latency and amplitude of the long thoracic nerve and to evaluate side to side, gender and BMI differences.Methods26 healthy subjects (12 males/14 females) participated in the study with data collected bilaterally resulting in 52 limbs studied. Surface recording was over the serratus anterior muscle with the recording electrode located on the rib closest to a distance within a standardized range of 22–24 cm distal to the acromion. Stimulation was delivered at the mid axillary line, then again in the supraclavicular region. A caliper was used to measure the distance between the two stimulation sites in order to calculate the nerve conduction velocity.ResultsThe normal value (mean + 2 SD) for distal latency is 61.0 m/s. Absolute amplitude values were not calculated. Side to side difference normal values for distal latency, amplitude and velocity are 0.7 msec, 70.3% and 8.5% respectively. A two way analysis of variance (ANOVA) revealed a significant gender and BMI difference in both distal (0.02) and proximal amplitude (0.05) means. There was no significant interaction between gender and BMI for latency or velocity values for either stimulation site.ConclusionsThe distal latency values are not significantly different from those reported previously, however long thoracic nerve conduction velocity has not been described before and would be an appropriate way to monitor velocity through the proximal portions of the brachial plexus. Men who qualified as overweight with a BMI greater than 25 demonstrated a larger amplitude when compared with average weight men and women. In contrast women with BMI greater than 25 demonstrated a much smaller amplitude when compared with overweight men and average weight men and women.SignificanceAbsolute amplitude normal values are not reported as BMI may impact the ability to record an accurate amplitude for both men and women. Long thoracic nerve conduction velocity and latency appear to be more reliable measures.
       
  • Evidence of neurophysiological improvement of early manifestations of
           small-fiber dysfunction after liver transplantation in a patient with
           familial amyloid neuropathy

    • Abstract: Publication date: 2018Source: Clinical Neurophysiology Practice, Volume 3Author(s): Mar Guasp, Alejandro A. Köhler, Michela Campolo, Jordi Casanova-Molla, Josep Valls-SoleAbstractIntroductionSmall fiber polyneuropathy (SFP) is a common heralding clinical manifestation of damage to the nervous system in patients with familial amyloidosis. The diagnosis of SFP is a significant factor in the decision to treat a previously asymptomatic gene carrier, as treatment would prevent irreversible nerve damage. This requires detection of the earliest but unequivocal signs of peripheral nerve involvement.Case reportWe present the case of a young female who was diagnosed of SFP, supported by data from quantitative sensory testing. She had preserved sensory nerve action potentials in the distalmost nerves of her feet and recordable nociceptive evoked potentials. She was successfully transplanted the liver from a previously healthy donor, and recovered fully of her symptoms and signs. Improvement was documented with repeated psychophysical and electrodiagnostic testing in the course of 4 years after transplantation.SignificanceThis case illustrates the utility of psychophysical testing to support the diagnosis of SFP.
       
  • Vibrotactile and thermal perception and its relation to finger skin
           thickness

    • Abstract: Publication date: 2018Source: Clinical Neurophysiology Practice, Volume 3Author(s): Ronnie Lundström, Håkan Dahlqvist, Mats Hagberg, Tohr NilssonAbstractObjectiveQuantitative measurements of vibrotactile and thermotactile perception thresholds (VPT and TPT, respectively) rely on responses from sensory receptors in the skin when mechanical or thermal stimuli are applied to the skin. The objective was to examine if there is a relation between skin thickness (epidermis and dermis) and VPT or TPT.MethodsPerception thresholds were measured on the volar side of the fingertip on 148 male subjects, out of which 116 were manual workers exposed to hand-transmitted vibration and 32 were white-collar (office) workers. Skin thickness was measured using a high-frequency ultrasonic derma scanner system.ResultsThe difference in age, perception thresholds and skin thickness between manual and office workers was small and non-significant except for the perception of cold, which was decreased by vibration exposure. Skin thickness for both subgroups was mean 0.57 mm (range 0.25–0.93 mm). Increased age was associated with decreased perception of warmth and vibration. Lifetime cumulative exposure to vibration, but not age, was associated with decreased perception of cold.ConclusionNo association (p > .05) was found between finger skin thickness in the range of about 0.1–1 mm and vibration perception threshold for test frequencies from 8 to 500 Hz and thermotactile perception thresholds for warmth and cold. Increasing age was associated with reduced perception of vibration and warmth. Vibration exposure was associated with decreased perception of cold.SignificanceSkin thickness is a factor that may affect the response from sensory receptors, e.g., due to mechanical attenuation and thermal insulation. Thus, to evaluate perception threshold measurements, it is necessary to know if elevated thresholds can be attributed to skin thickness. No previous studies have measured skin thickness as related to vibrotactile and thermotactile perception thresholds. This study showed no association between skin thickness and vibrotactile perception or thermotactile perception.
       
  • Phenomenology of neurophysiologic changes during surgical treatment of
           carotid stenosis using signal analysis

    • Abstract: Publication date: 2018Source: Clinical Neurophysiology Practice, Volume 3Author(s): Jonathan A. Norton, Lissa Peeling, Kotoo Meguro, Mike KellyAbstractObjectiveTo describe the changes in the shape and topology of the somatosensory evoked potential (SSEP) during carotid endarterectomy, with particular reference to the time of clamping.MethodsRoutine intraoperative monitoring was performed on 30 patients undergoing carotid endarterectomy (15) or undergoing stenting (15) using median nerve SSEPs. Post-operatively the first and second derivatives of the potential were examined. Separate analysis of the SSEP using wavelets was also performed.ResultsIn no instances did changes in the SSEP reach clinical significance. The first derivative showed significant changes that were temporally related to the clamp period. After clamping the ‘velocity’ was higher than baseline. There were changes in the wavelets related to the clamp period with more marked spectral edges at the conclusion of the procedure than baseline. In all instances the patient had a good clinical outcome.ConclusionsWavelet and derivative analysis of evoked potentials show changes that are not apparent with measures of amplitude and latency. The clinical relevance of these changes remains uncertain and await larger studies.SignificanceIncreased velocity and spectral edges may be markers of increased cerebral blood flow, at least in the setting of pre-existing carotid stenosis.
       
  • Usefulness of EEG for the differential diagnosis of possible transient
           ischemic attack

    • Abstract: Publication date: 2018Source: Clinical Neurophysiology Practice, Volume 3Author(s): Carla Bentes, Patrícia Canhão, Ana Rita Peralta, Pedro Viana, Ana Catarina Fonseca, Ruth Geraldes, Teresa Pinho e Melo, Teresa Paiva, José Manuel FerroAbstractObjectiveEEG value in possible transient ischemic attacks (TIA) is unknown. We aim to quantify focal slow wave activity (FSWA) and epileptiform activity (EA) frequency in possible TIA, and to analyse its contribution to the final diagnosis of seizures and/or definitive TIA.MethodsProspective longitudinal study of possible TIA patients evaluated at a tertiary centre during 36 months and with 1–3 months follow-up. EEG was performed as soon as possible (early EEG) and one month later (late EEG). A stroke neurologist established final diagnosis after reassessing all clinical and diagnostic tests.Results80 patients underwent an early EEG (45.8 h after possible TIA): 52 had FSWA and 6 of them also EA. Early FSWA was associated with epileptic seizure or definitive TIA final diagnosis (p = .041). Patients with these diagnoses had more frequently early FSWA (19/23; 82.6%) than EA (6/23; 26.1%). 6/13 (46.2%) patients with epileptic seizure final diagnosis had EA.In the late EEG, 43 (58.1%) patients demonstrated persistent FSWA and 3 of them also EA. Persistent FSWA in the late EEG was more frequent in seizures than in TIA patients (91.7% vs. 45.5%). FSWA disappearance was associated with acute vascular lesion on neuroimage.ConclusionsFSWA was the commonest EEG abnormality found in the early EEG of patients with possible TIA, but did not distinguish between TIA and seizure patients. In patients with seizures, FSWA was more common than EA and its presence in the late EEG was more likely in patients with epileptic seizures than with TIA.SignificanceThe majority of possible TIA patients with the final diagnosis of epileptic seizures do not have EA in the early or late EEG.
       
  • Large fasciculation can clinically manifest as spinal myoclonus;
           electromyographic and dynamic echomyographic studies of four cases with
           motor neuron disease

    • Abstract: Publication date: 2018Source: Clinical Neurophysiology Practice, Volume 3Author(s): Manabu Inoue, Masayoshi Yamamoto, Koji Tsuzaki, Toshiaki Hamano, Hiroaki Etoh, Hiroshi ShibasakiAbstractObjectivePatients with motor neuron disease rarely present with fasciculation which is large enough to be clinically recognized as myoclonus. This study is aimed at elucidating the features of large fasciculation manifesting as myoclonus by using surface electromyography (surface EMG) and dynamic echomyography (dynamic Echo).MethodsFour patients with amyotrophic lateral sclerosis, two of whom clinically presented with both fasciculation and myoclonus, were studied by using the surface EMG and the dynamic Echo.ResultsAt rest, all patients had fasciculation in atrophic muscles, and the surface EMG showed occasional discharges of different waveforms corresponding to fasciculation. During voluntary gentle muscle contraction, the surface EMG showed repetitive discharges in the contracting muscle, which were constant in size and waveform within each muscle. The muscle Echo at rest revealed occasional contractions of a small number of muscle fibers corresponding to fasciculation. During voluntary muscle contraction, the number of muscle fibers involved in the involuntary motor phenomena was larger in the patients who clinically presented with myoclonus compared with other patients who clinically presented only with fasciculation. In a patient who presented with myoclonus, there was no contraction in the antagonist muscle.ConclusionsFasciculation involving a large number of muscle fibers clinically manifests as spinal myoclonus.SignificanceFasciculation involving a large number of muscle fibers can be a cause of spinal myoclonus.
       
  • Standardization of the Jendrassik maneuver in Achilles tendon tap reflex

    • Abstract: Publication date: 2018Source: Clinical Neurophysiology Practice, Volume 3Author(s): Lale A. Ertuglu, Ilhan Karacan, Gizem Yilmaz, Kemal S. TürkerAbstractObjectiveFor many decades, the Jendrassik maneuver (JM) has been used as a reinforcement for stretch reflexes, although the underlying mechanism of this reinforcement is still not fully understood. Moreover, the term JM has been used for many different muscle contraction strategies as there is no fixed movement for the maneuver in the literature. In this study, we aimed to investigate the effects of clenched hand pull, teeth clenching, and their combined effects to reach standardization.MethodsAchilles tendon tap reflex responses in the soleus were recorded during rest (R), hand pull (HP), teeth clench (TC), and HP + TC combined, hereafter referred to as the JM.ResultsReflex response amplitudes significantly increased during JM, HP, and TC in the soleus. HP and JM significantly changed the background activity in the soleus, but TC alone did not.ConclusionThese results suggest that dominantly presynaptic disinhibitory mechanisms may be responsible for the increase in the tendon tap reflex during HP, TC, and JM.SignificanceBecause the findings indicate that HP increases the background activity of the soleus, we suggest that researchers should use only TC during the Jendrassik maneuver to avoid any confounding background activity change.
       
  • Mirror movements or functional tremor masking organic tremor

    • Abstract: Publication date: 2018Source: Clinical Neurophysiology Practice, Volume 3Author(s): S.H. Merchant, D. Haubenberger, M. HallettAbstractBackgroundFunctional tremors can be diagnosed based on clinical and physiologic criteria such as entrainment, suggestibility, distractibility, variable nature with the associated clinical history of psychosomatic co-morbidities. The current case report highlights the underrecognized utility of neurophysiology in the correct diagnosis of tremors, providing useful clinical and neurophysiologic insights into clinical and physiological assessment of tremors.Case reportA 62-year-old woman with a past medical history of polio was referred by a movement disorders neurologist for evaluation of tremor with concerns of a likely functional etiology. On first assessment there were findings notable for a possible organic etiology, but upon subsequent evaluation the tremor was noted to be variable and entrainable, suggestive of a functional etiology. Neurophysiological tremor study could identify an underlying organic tremor (likely of multi-factorial etiology). Tremor entrainment with contralateral hand tapping could be mirror movements or functional movements, as the underlying organic tremor was not entrained. The amplitude of mirrored movement was commensurate with the tapping amplitude.DiscussionFunctional tremors may mask an underlying organic tremor. Additionally, motor overflow which may happen especially with large amplitude movements may masquerade as mirror movements, which can be difficult to differentiate from an entrained functional tremor. Objective physiology and refinement of the current clinical and physiologic tremor evaluation techniques may help identify an underlying organic etiology.
       
  • Nerve conduction studies and EMG in carpal tunnel syndrome: Do they add
           value'

    • Abstract: Publication date: 2018Source: Clinical Neurophysiology Practice, Volume 3Author(s): Masahiro Sonoo, Daniel L. Menkes, Jeremy D.P. Bland, David BurkeAbstractThis paper summarises the views of four experts on the place of neurophysiological testing (EDX) in patients presenting with possible carpal tunnel syndrome, in guiding their treatment, and in reevaluations. This is not meant to be a position paper or a literature review, and heterogeneous viewpoints are presented. Nerve conduction studies should be performed in patients presenting with possible carpal tunnel syndrome to assist diagnosis, and may need to be repeated at intervals in those managed conservatively. There is evidence that local corticosteroid injection is safe and effective for many patients, thereby avoiding or deferring surgical decompression. All patients should undergo EDX studies before any invasive procedure for CTS (injection or surgery). Needle EMG studies are not obligatory, but may be needed in those with severe disease and those in whom an alternate or concomitant diagnosis is suspected.
       
  • Electrodiagnosis, a real added value for the evaluation of upper limb
           paresthesiae and pains

    • Abstract: Publication date: 2018Source: Clinical Neurophysiology Practice, Volume 3Author(s): P. Seror
       
  • Differentiating fasciculations from myoclonus in motor neuron disease

    • Abstract: Publication date: 2018Source: Clinical Neurophysiology Practice, Volume 3Author(s): Susan Walker, Neil G. Simon
       
  • The effect of stimulation rate on cervical vestibular evoked myogenic
           potential quality

    • Abstract: Publication date: 2018Source: Clinical Neurophysiology Practice, Volume 3Author(s): Faten S. Obeidat, Steven L. Bell
       
  • Holmes’ or functional tremor'

    • Abstract: Publication date: 2018Source: Clinical Neurophysiology Practice, Volume 3Author(s): Tommaso Bocci, Gianluca Ardolino, Laura Parenti, Davide Barloscio, Anna De Rosa, Alberto Priori, Ferdinando SartucciAbstractObjectiveHolmes tremor is a rare kind of hyperkinetic movement disorder, clinically characterized by irregular, monolateral, high-amplitude jerks, sharing a quite similar frequency with those observed in Parkinson’s disease; its generation likely relies on a combined involvement of cerebello-thalamic and nigrostriatal pathways.MethodsWe report the case of a man with a combined resting-postural-kinetic tremor. Neuroimaging revealed an intracranial dermoid cyst at the right pontocerebellar angle with brainstem dislocation. We performed an extensive electrophysiological assessment from the extensor digitorum communis (EDC) and flexor carpi radialis (FCR) muscles.ResultsBoth the spontaneous variability of tremor frequency and frequency entrainment argued against an organic aetiology. Polymyography revealed: 1) a paradoxical increase of tremor amplitude with mass loading; 2) jerks’ synchronization between antagonistic muscles during voluntary contralateral motor performances; 3) tremor inhibition while asking the patient to make a ballistic movement.ConclusionsWe suggest a complete psychogenic genesis or, at least in part, a possible co-existence of a rubral tremor with functional traits.SignificanceHere, we propose a simple and fast test battery for an early diagnosis of functional tremor. Our results prompt further studies to re-define electrodiagnostic criteria in hyperkinetic movement disorders, possibly updating the floating border between organic and psychogenic disease.
       
  • A rare case of isolated myoclonus in an elderly male without a history of
           epilepsy

    • Abstract: Publication date: 2018Source: Clinical Neurophysiology Practice, Volume 3Author(s): Aniruddh Kapoor, Laurence KinsellaAbstractAimThrough this case report we attempt to highlight the presentation, initial investigation and management of lingual myoclonus as well as consolidate relevant literature.CaseWe present a unique case of a 72-year-old man who was admitted to the hospital for a sudden onset episodic speech arrest. Lingual myoclonus, an isolated movement disorder, manifested as an intermittent expressive aphasia secondary to the intrusion-protrusion movements of his tongue. During this time, the patient remained conscious and was able to continue to follow commands. Initial diagnostic evaluation with a CT scan, MRI and EEG failed to illicit a clear underlying etiology and the patient was empirically treated with valproic acid with complete resolution of his symptoms.DiscussionThis unusual presentation represents a rare disorder which is not well described in literature. Initial evaluation of which required excluding associated etiologies including strokes, seizures, medications/toxins or CNS infections. Without a clear etiology on initial diagnostic evaluation, the patient was empirically treated as no clear guidelines exist. This case presentation is an attempt to add to the current understanding of lingual myoclonus.
       
  • Cerebral blood flow changes during tilt table testing in healthy
           volunteers, as assessed by Doppler imaging of the carotid and vertebral
           arteries

    • Abstract: Publication date: 2018Source: Clinical Neurophysiology Practice, Volume 3Author(s): C. (Linda).M.C. van Campen, Freek W.A. Verheugt, Frans C. VisserAbstractObjectivesUsing different techniques, reduction of cerebral blood flow (CBF) during orthostatic stress were demonstrated. One study reported flow reduction of the right internal carotid (ICA) and vertebral (VA) artery during orthostatic stress by Doppler imaging, with different effects on the 2 vessels. Global CBF changes, using this technique, have not been reported. Therefore, flow of the ICA, VA and global CBF were measured during head-up tilt testing.Methods33 healthy volunteers underwent tilt testing. At three time points (supine, half way and at the end of the test) Doppler imaging of the ICA and VA was performed, as well as PetCO2 measurements.ResultsGlobal CBF was significantly reduced by 4.5 ± 2.8% halfway the test and by 6.0 ± 3.4% at the end. All 4 artery flows were significantly reduced during the tilt, without differences between them. Despite small changes in PetCO2 there was a significant relation between de CBF decrease and PetCO2 decrease (p 
       
  • Clinical utility of contact heat evoked potentials (CHEPs) in a case of
           mentalis nerve lesion

    • Abstract: Publication date: 2018Source: Clinical Neurophysiology Practice, Volume 3Author(s): Amparo Lugo, Ada Ferrer-Fuertes, Lilia Isabel Correa, Michela Campolo, Jordi Casanova-Molla, Josep Valls-SoleAbstractObjectiveNociceptive evoked potentials are still infrequently used in electrodiagnostic studies of single patients. We report a case in which the results of contact heat evoked potentials (CHEPs) provided unique information for the diagnosis.MethodsAfter biopsy for a local cementoma, a 21-year-old woman presented with neuropathic pain in the distribution of her left mentalis nerve. A CT scan showed a well circumscribed lesion near the mentalis nerve groove. We examined brainstem reflexes and evoked potentials conveyed through the mentalis nerve.ResultsBlink reflex responses recorded from the orbicularis oculi, jaw jerk and masseteric silent period recorded from the masseter muscles and long latency evoked potentials recorded from Cz to electrical stimulation of the mentalis nerve were all within normal values, with no differences between sides. However, CHEPs, recorded from Cz to thermoalgesic stimulation of the left mentalis area were decreased to approximately 1/3 their size in comparison to stimulation to the unaffected side.ConclusionWhile the patient reported symptoms and had neuroimaging signs of mentalis neuropathy, the sole electrophysiological abnormality identified was that of CHEPs, which specifically test small, unmyelinated fibers.SignificanceNociceptive evoked potentials can provide unique information on damage of small nerve fibers in specific cases.
       
  • Full 10-20 EEG application in hospitalised neonates is not associated with
           an increase in stress hormone levels

    • Abstract: Publication date: 2018Source: Clinical Neurophysiology Practice, Volume 3Author(s): Kimberley Whitehead, Laura Jones, Pureza Laudiano Dray, Judith Meek, Lorenzo Fabrizi
       
 
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