Children's Auditory Event-Related Potentials Index Sound Complexity and "Speechness"

Children's long-latency auditory event-related potential (LLAEP) structure differs from that of adults. Functional significance of childhood ERP components is largely unknown. In order to look for the functional correlates in adult and children's LLAEPs, stimulus-complexity effects were in...

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Bibliographic Details
Published in:International journal of neuroscience 2001-01, Vol.109 (3-4), p.245-260
Main Authors: eponiené, Rita, Shestakova, Anna, Balan, Polina, Alku, Paavo, Yiaguchi, Kiyoshi, Naatanen, Risto
Format: Article
Language:English
Subjects:
Behavioral psychophysiology
Biological and medical sciences
Brain - physiology
Child
Children
Electroencephalography
Electrophysiology
Event-related potentials (ERP)
Evoked Potentials, Auditory - physiology
Female
Functional Laterality - physiology
Fundamental and applied biological sciences. Psychology
Humans
Long-latency auditory evoked potentials (LLAEP)
Male
N250
N450
Obligatory components
Phonetics
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
Speech Perception - physiology
Stimulus complexity
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Summary:Children's long-latency auditory event-related potential (LLAEP) structure differs from that of adults. Functional significance of childhood ERP components is largely unknown. In order to look for the functional correlates in adult and children's LLAEPs, stimulus-complexity effects were investigated in 8-10-year old children. To this end, auditory ERPs to vowels, acoustically matched complex tones, and sinusoidal tones were recorded. All types of stimuli elicited P100-N250-N450 ERP complex. Differences between the sinusoidal and complex tones were confined to the P100 and N250 peaks, complex tones eliciting larger responses. Vowels elicited smaller-amplitude N250 but larger-amplitude N450 than the complex tones. Some stimulus-complexity effects observed for N250 in children corresponded to those observed for the Nl in adults, whereas the N450 peak exhibited behaviour resembling that of the adult ERP components subsequent to the Nl wave.
ISSN:0020-7454
1563-5279
1543-5245
DOI:10.3109/00207450108986536