A1 Refereed original research article in a scientific journal
Developmentally impaired processing speed decreases more than normally with age
Authors: Laasonen M, Lahti-Nuuttila P, Virsu V
Publisher: LIPPINCOTT WILLIAMS & WILKINS
Publication year: 2002
Journal:: NeuroReport
Journal name in source: NEUROREPORT
Journal acronym: NEUROREPORT
Volume: 13
Issue: 9
First page : 1111
Last page: 1113
Number of pages: 3
ISSN: 0959-4965
DOI: https://doi.org/10.1097/00001756-200207020-00008
Abstract
Several studies show that although function may recover after brain damage the insult can nevertheless cause accelerated deterioration in old age. This has been interpreted as indicating reduced neuronal capacity to counteract age-related decline with plastic changes. Psychosocial and compensatory factors obscure the neuronal explanation. Since the speed of processing sequential temporal information is impaired in developmental dyslexia, we investigated its dependence on age (20-59 years) in psychosocially comparable groups of dyslexic and fluent readers using six tasks. Processing speed was impaired in dyslexia and decreased with age. The decrement was faster in dyslexic than normal readers in processing periodic stimuli. No exacerbation occurred in reading and other experiential factors. Our results, therefore, support the neuronal explanation.
Several studies show that although function may recover after brain damage the insult can nevertheless cause accelerated deterioration in old age. This has been interpreted as indicating reduced neuronal capacity to counteract age-related decline with plastic changes. Psychosocial and compensatory factors obscure the neuronal explanation. Since the speed of processing sequential temporal information is impaired in developmental dyslexia, we investigated its dependence on age (20-59 years) in psychosocially comparable groups of dyslexic and fluent readers using six tasks. Processing speed was impaired in dyslexia and decreased with age. The decrement was faster in dyslexic than normal readers in processing periodic stimuli. No exacerbation occurred in reading and other experiential factors. Our results, therefore, support the neuronal explanation.
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