title: Neurophysiological and behavioural correlates of coherent motion perception in dyslexia.
abstract: Coherent motion perception was tested in nine adolescents with dyslexia and 10 control participants matched for age and IQ using low contrast stimuli with three levels of coherence (10%, 25% and 40%). Event-related potentials (ERPs) and behavioural performance data were obtained. No significant between-group differences were found in performance accuracy and response latencies of correct responses, for early (P1, N1, and P2) or late (P3) ERP peaks. However, attenuated early ERPs in the 10% coherent condition correlated significantly with lower performance accuracy (r = -.66) and with the magnitude of literacy deficit (r = -.46).
authors.affiliation: Department of Psychology, Sheffield Hallam University, UK. N.A.Taroyan@shu.ac.uk
authors.forename: Naira A
authors.initials: NA
authors.lastname: Taroyan
authors.forename: Roderick I
authors.initials: RI
authors.lastname: Nicolson
authors.forename: David
authors.initials: D
authors.lastname: Buckley
mesh_terms: D000293:Adolescent; D000704:Analysis of Variance; D001931:Brain Mapping; D004410:Dyslexia / Q000150:complications*; D004569:Electroencephalography; D005074:Evoked Potentials, Visual / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D009039:Motion Perception / Q000502:physiology*; D010468:Perceptual Disorders / Q000209:etiology*; D010775:Photic Stimulation / Q000379:methods; D011594:Psychometrics; D011930:Reaction Time / Q000502:physiology*; D013223:Statistics as Topic; D055815:Young Adult