Trait and state EEG indices of information processing in developmental dyslexia.
L asymmetry in beta activity in the dyslexic group, again in both tasks. Theta activity did discriminate between the two tasks in the dyslexic group. In the phonological task, task-related frontal theta in the dyslexic group was significantly different from the control group, with the former showing an increase in amplitude and the latter a decrease. In the visual task, there was no significant difference between the dyslexic and the control group, with both showing a task-related decrease in amplitude. The inter-task variations in EEG response in the dyslexic group paralleling variations in task performance are interpreted in terms of the varying engagement of a frontally-based attentional system. Inter-task consistencies of EEG response despite variations in performance are interpreted in terms of the continued application of a specific cognitive strategy.
Rippon
G
G
Department of Psychology, University of Warwick, Coventry, UK. g.m.rippon@warwick.ac.uk
Brunswick
N
N
D000293:Adolescent; D001184:Articulation Disorders / Q000503:physiopathology*; D002648:Child; D004410:Dyslexia / Q000503:physiopathology*; D004569:Electroencephalography; D005260:Female; D005625:Frontal Lobe / Q000503:physiopathology; D006801:Humans; D008297:Male; D008606:Mental Processes / Q000502:physiology*; D009778:Occipital Lobe / Q000503:physiopathology; D010296:Parietal Lobe / Q000503:physiopathology