Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Search research articles

Related Experiment Videos

[Negative myoclonus; a simple partial seizure].

H Yamanouchi¹, T Kurokawa, M Arima

¹Division of Child Neurology, National Center Hospital for Mental, Nervous and Muscular Disorders, Tokyo.

No to Hattatsu = Brain and Development

|May 1, 1991

Summary

This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Acute encephalopathy associated with hemolytic uremic syndrome caused by Escherichia coli O157: H7 and rotavirus infection.

European review for medical and pharmacological sciences·2015

Same author

Brain hypothermia therapy for status epilepticus in childhood.

European review for medical and pharmacological sciences·2014

Same author

Partial epilepsy and developmental delay in infant with ring chromosome 14.

Genetic counseling (Geneva, Switzerland)·2013

Same author

[East Japan disaster and the Great Hanshin earthquake].

No to hattatsu = Brain and development·2012

Same author

[Clinical trials of intravenous phenobarbital for the establishment of evidence-based standard treatment for status epilepticus in Japan].

No to hattatsu = Brain and development·2011

Same author

Determinants of outcomes following acute child encephalopathy and encephalitis: pivotal effect of early and delayed cooling.

Archives of disease in childhood·2010

Same journal

[Successful treatment with topiramate in a case of idiopathic intracranial hypertension refractory to acetazolamide].

No to hattatsu = Brain and development·2018

Same journal

[Clinical characteristics of early juvenile GM2 gangliosidosis: a case report].

No to hattatsu = Brain and development·2018

Same journal

[Non-invasive positive pressure ventilation during the management of severe spinal muscular atrophy type I].

No to hattatsu = Brain and development·2018

Same journal

[Ictal arterial spin labeling MRI findings in two cases of acute confusional migraine].

No to hattatsu = Brain and development·2018

Same journal

[A case of West syndrome with a deletion at chromosome 2q24.3-q31.3].

No to hattatsu = Brain and development·2018

Same journal

[Irreversible cerebral ischemia caused by febrile status epilepticus in Sturge-Weber syndrome type III].

No to hattatsu = Brain and development·2018

See all related articles

Negative myoclonus, diagnosed as simple partial seizures in a young boy, involved involuntary limb movements. Polygraphic studies revealed these movements stemmed from muscle inhibition linked to specific EEG abnormalities.

Area of Science:

Pediatric Neurology
Clinical Neurophysiology

Background:

Negative myoclonus is characterized by brief, involuntary muscle relaxation.
Diagnosis often requires detailed electrophysiological assessment.

Observation:

A 4-year-old boy presented with irregular trembling of the right upper limb when holding objects.
Coarse trembling movements were observed in the body and lower limbs while sitting or standing.

Findings:

Polygraphic study diagnosed negative myoclonus as simple partial seizures.
Electromyography (EMG) showed intermittent muscle inhibition with electrical silence.
Electroencephalography (EEG) revealed spikes in the left central area correlating with movements.

Implications:

Related Experiment Videos

Highlights the importance of polygraphic studies in diagnosing subtle movement disorders in children.
Correlates specific EEG findings with negative myoclonus, aiding in epilepsy diagnosis.
Suggests simple partial seizures can manifest as negative myoclonus.