Document Detail

Reflex epilepsy induced by calculation using a "Soroban," a Japanese traditional calculator.
MedLine Citation:
PMID:  1898720     Owner:  NLM     Status:  MEDLINE    
We report three cases of reflex epilepsy with myoclonic jerks of the right arm and fingers precipitated by calculation using a Soroban. An EEG spike-wave complex with left central prevalence was induced. Various types of stimulation were used to induce epileptic discharges, and a simultaneous mental task requiring a high degree of concentration and complicated and delicate finger movements was necessary to induce the epileptic discharges. Comparison of our cases with previously reported reflex epilepsy induced by higher mental activity led to the assumption that the neural mechanism inducing seizures in our cases is similar to that of writing epilepsy. Valproate was effective in reducing epileptic discharges, and all patients became seizure-free.
J Yamamoto; I Egawa; S Yamamoto; A Shimizu
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Epilepsia     Volume:  32     ISSN:  0013-9580     ISO Abbreviation:  Epilepsia     Publication Date:    1991 Jan-Feb
Date Detail:
Created Date:  1991-02-11     Completed Date:  1991-02-11     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  2983306R     Medline TA:  Epilepsia     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  39-43     Citation Subset:  IM    
Umeshin Clinic, Japan.
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MeSH Terms
Cerebral Cortex / physiopathology
Epilepsies, Myoclonic / drug therapy,  etiology*,  physiopathology
Mental Processes / physiology*
Problem Solving / physiology
Psychomotor Performance / physiology
Valproic Acid / therapeutic use
Reg. No./Substance:
99-66-1/Valproic Acid

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