Abstract:
PURPOSE:Benign epilepsy with centrotemporal spikes (BECTS) is associated with mild cognitive deficits, especially language impairment. This study aimed to clarify whether children with BECTS with left- or right-hemispheric, or bilateral focus have specific neuropsychological language deficits when compared to healthy controls, whether these deficits correlate functionally with language network organization (typical vs. atypical), and whether cofactors such as duration, handedness, and medication have a relevant impact on language reorganization processes. METHODS:Twenty-seven patients and 19 healthy controls were examined with several neuropsychological tests (German version of the Wechsler Intelligence Scale for Children [WISC-IV], Regensburger verbal fluency test [RWT], Corsiblock forward and backward and Hand-Dominanz-Test [HDT]) and with two language paradigms on functional magnetic resonance imaging (fMRI): silent reading of word-pairs and silent generation of simple sentences. KEY FINDINGS:Although neuropsychological test results only differed by trend between BECTS patients and controls, language laterality indices (LIs) in fMRI were significantly lower in patients than in controls. In particular, the anterior language network with Broca's area and the supplementary motor area (SMA) revealed the lowest LIs and showed the most bilateral or right hemispheric activations in the sentence generation task. Medication and duration of epilepsy did not have any significant effect on language reorganization and patients' performances. SIGNIFICANCE:Language reorganization in BECTS patients takes place in bilateral or right hemispheric language networks, with a strong focus in anterior language regions. These functional changes can be interpreted as important compensatory strategies of the central nervous system (CNS) to stabilize cognitive, especially language performance.
journal_name
Epilepsiajournal_title
Epilepsiaauthors
Datta AN,Oser N,Bauder F,Maier O,Martin F,Ramelli GP,Steinlin M,Weber P,Penner IKdoi
10.1111/epi.12067subject
Has Abstractpub_date
2013-03-01 00:00:00pages
487-94issue
3eissn
0013-9580issn
1528-1167journal_volume
54pub_type
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