Impaired visual processing of multi-element arrays is associated with increased number of eye movements in dyslexic reading.
For assessing simultaneous visual processing in dyslexic and normal readers a multi-element processing task was used which required the report of a single digit of briefly presented multi-digit arrays. Dyslexic readers exhibited higher recognition thresholds on 4- and 6-digit, but not on 2-digit arrays. Individual recognition thresholds on the multi-digit arrays were associated with number of eye movements during reading. The dyslexic multi-element processing deficit was not accompanied by deficient coherent motion detection or deficient visual precedence detection and was independent from deficits in phonological awareness and rapid naming. However, only about half of the dyslexic readers exhibited a multi-element processing deficit.
Hawelka
Stefan
S
Department of Psychology and Center of Neurocognitive Research, University of Salzburg, Hellbrunnstr. 34, Salzburg, Austria. stefan.hawelka@sbg.ac.at
Wimmer
Heinz
H
D000293:Adolescent; D004410:Dyslexia / Q000503:physiopathology / Q000523:psychology*; D005133:Eye Movements; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D010364:Pattern Recognition, Visual; D011932:Reading; D012660:Semantics