Document Detail

Reaction time variability in epileptic and brain-damaged patients.
MedLine Citation:
PMID:  414884     Owner:  NLM     Status:  MEDLINE    
Median reaction times and intra-individual variability were studied in epileptic (N = 63), brain-damaged (non-epileptic) (N = 25) and control patients (N = 25) using a six and one half minute visual, continuous reaction time task. Epileptic and brain-damaged groups were significantly slower than control patients on median reaction times at the 10th, 50th, and 90th percentiles and on the differences between the 10th and 90th percentiles. Thus both general slowing and greater intra-individual variability were found in the epileptic and brain-damaged patients. Reaction times were not related to presence, type and severity of EEG abnormality or to age of onset of epilepsy. Grand mal patients did have significantly greater variability than other types of seizure patients. Epileptic and brain-damaged patients did not differ significantly on any reaction time variables. Both groups were discriminated significantly from the controls on all reaction time measures, especially on the intra-individual variability measure.
P Bruhn; O A Parsons
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Cortex; a journal devoted to the study of the nervous system and behavior     Volume:  13     ISSN:  0010-9452     ISO Abbreviation:  Cortex     Publication Date:  1977 Dec 
Date Detail:
Created Date:  1978-04-17     Completed Date:  1978-04-17     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0100725     Medline TA:  Cortex     Country:  ITALY    
Other Details:
Languages:  eng     Pagination:  373-84     Citation Subset:  IM    
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MeSH Terms
Age Factors
Brain Damage, Chronic / diagnosis,  physiopathology*
Cerebral Cortex / physiopathology
Epilepsies, Partial / physiopathology
Epilepsy / diagnosis,  etiology,  physiopathology*
Epilepsy, Absence / physiopathology
Epilepsy, Temporal Lobe / physiopathology
Epilepsy, Tonic-Clonic / physiopathology
Middle Aged
Reaction Time / physiology*
Time Factors

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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