A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Rate of information segregation in developmentally dyslexic children.
Tekijät: Laasonen, Tomma-Halme, Lahti-Nuuttila, Service, Virsu
Julkaisuvuosi: 2000
Lehti:: Brain and Language
Tietokannassa oleva lehden nimi: Brain and language
Lehden akronyymi: Brain Lang
Vuosikerta: 75
Numero: 1
Aloitussivu: 66
Lopetussivu: 81
Sivujen määrä: 16
ISSN: 0093-934X
DOI: https://doi.org/10.1006/brln.2000.2326
Tiivistelmä
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.
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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