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ERIC Number: EJ925747
Record Type: Journal
Publication Date: 2011-Jul
Pages: 6
Abstractor: As Provided
Reference Count: 0
ISSN: ISSN-0278-2626
Interictal and Postictal Performances on Dichotic Listening Test in Children with Focal Epilepsy
Carlsson, G.; Wiegand, G.; Stephani, U.
Brain and Cognition, v76 n2 p310-315 Jul 2011
Dichotic listening test (DL) is an important tool to disclose speech dominance in healthy subjects and in clinical cases. The aim of this study was to probe if focal epilepsy in children reveals a corresponding suppression of the ear reports contralateral to seizure onset site. Thus, 15 children and adolescents with clinically and electroencephalographically diagnosed focal epilepsy selected for left-hemisphere speech dominance without mental retardation were compared to matched controls according to age, gender, IQ and handedness. All children were assessed with DL for three times: Interictally (t[superscript 0]), postictally 5' (t[superscript 1]) and 1 h (t[superscript 2]). At t[superscript 0], all groups revealed a right ear advantage (REA), indicating a left-hemisphere speech dominance. There was a continuous increase in right correct score (REC) over the trials for normal controls. Five minutes postictally, there was an abrupt decrease in REC with a sustained left ear correct score (LEC) for children with epilepsy, independent of which side suffered from seizures. This effect was maintained even after 1 h. Thus, in children with left-hemisphere speech dominance the epileptic discharges caused a suppression of REC regardless of origin. The seizures may have a prolonged impact on attention and auditory perception for a considerable time after consciousness has been regained. (Contains 2 tables and 2 figures.)
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A