Cortical categorization failure in 2-month-old infants at risk for dyslexia

Autor: Frans Zwarts, Marieke van Herten, Theo van Leeuwen, P. Been, Ben Maassen, Aryan van der Leij
Rok vydání: 2007
Předmět:
Male
Risk
medicine.medical_specialty
Speech perception
CHILDREN
Audiology
event-related potentials
genetic risk
SPEECH-PERCEPTION
behavioral disciplines and activities
Lateralization of brain function
Functional Laterality
Developmental psychology
Dyslexia
Communication disorder
Perception and Action [DCN 1]
medicine
lateralization
Humans
Language disorder
BRAIN
Risk factor
auditory processing
MISMATCH RESPONSE
Cerebral Cortex
Categorical perception
Brain Mapping
HYPOTHESIS
infants
General Neuroscience
Infant
Electroencephalography
Psychological determinants of chronic illness [NCEBP 8]
ADULTS
IMPAIRMENT
medicine.disease
categorization
Neuromuscular development and genetic disorders [UMCN 3.1]
Laterality
Auditory Perception
Speech Perception
Determinants of Health and Disease [EBP 1]
DEVELOPMENTAL DYSLEXIA
Female
Psychology
Zdroj: Neuroreport, 18, 857-61
University of Groningen
Neuroreport, 18(9), 857-861. LIPPINCOTT WILLIAMS & WILKINS
Neuroreport, 18, 9, pp. 857-61
ISSN: 0959-4965
Popis: Contains fulltext : 53716.pdf (Publisher’s version ) (Closed access) Cortical auditory categorization was assessed in 2-month-old infants at genetic risk for dyslexia and controls. Manipulated /bAk/ and /dAk/ speech stimuli were used as frequently presented standards. The neuroelectric brain responses of the control infants were highly sensitive to the phoneme boundary that separated these stimuli, but the infants at risk showed no signs of cortical categorical perception. Cortical sources of the responses were predominantly found in the left hemisphere for the control infants, but mainly in the right hemisphere for the infants at risk. The results demonstrate that impaired categorical perception in dyslexia is already present in infants at risk for the disorder.
Databáze: OpenAIRE
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