Rate of Information Segregation in Developmentally Dyslexic Children  

Oleh:

Laasonen, Marja ; Tomma-Halme, Jaana ; Lahti-Nuuttila, Pekka ; Service, Elisabet ; Virsu, Veijo

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Brain and Language (Full Text) vol. 75 no. 1 (2000), page 66-81.
Topik: developmental dyslexia; temporal processing; visual; auditory; tactile; crossmodal
Fulltext: 75_01_Laasonen.pdf (122.61KB)

Isi artikel

Slowed processing of sequential perceptual information is related to developmental dyslexia. We investigated this unimodally and crossmodally in developmentally dyslexic children and controls ages 8–12 years. The participants judged whether two spatially separate trains of brief stimuli, presented at various stimulus onset asynchronies (SOA) in one or two senses, were synchronous or not. The stimulus trains consisted of light flashes in vision, clicks in audition, and indentations of the skin in the tactile sense. The dyslexic readers required longer SOAs than controls for successful performance in all six comparisons. The crossmodal spatiotemporal resolution of the groups differed more than unimodal performance. The dyslexic readers’ segregation performance was also less differentiated than that of the controls. Our results show that not only sensory but also polysensory nonverbal information processing is temporally impaired in dyslexic children.

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