Elicitation of the Acoustic Change Complex to Long-Duration Speech Stimuli in Four-Month-Old Infants
Joint Authors
Source
International Journal of Otolaryngology
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-12-22
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
The acoustic change complex (ACC) is an auditory-evoked potential elicited to changes within an ongoing stimulus that indicates discrimination at the level of the auditory cortex.
Only a few studies to date have attempted to record ACCs in young infants.
The purpose of the present study was to investigate the elicitation of ACCs to long-duration speech stimuli in English-learning 4-month-old infants.
ACCs were elicited to consonant contrasts made up of two concatenated speech tokens.
The stimuli included native dental-dental /dada/ and dental-labial /daba/ contrasts and a nonnative Hindi dental-retroflex /daDa/ contrast.
Each consonant-vowel speech token was 410 ms in duration.
Slow cortical responses were recorded to the onset of the stimulus and to the acoustic change from /da/ to either /ba/ or /Da/ within the stimulus with significantly prolonged latencies compared with adults.
ACCs were reliably elicited for all stimulus conditions with more robust morphology compared with our previous findings using stimuli that were shorter in duration.
The P1 amplitudes elicited to the acoustic change in /daba/ and /daDa/ were significantly larger compared to /dada/ supporting that the brain discriminated between the speech tokens.
These findings provide further evidence for the use of ACCs as an index of discrimination ability.
American Psychological Association (APA)
Chen, Ke Heng& Small, Susan A.. 2015. Elicitation of the Acoustic Change Complex to Long-Duration Speech Stimuli in Four-Month-Old Infants. International Journal of Otolaryngology،Vol. 2015, no. 2015, pp.1-12.
https://search.emarefa.net/detail/BIM-1066268
Modern Language Association (MLA)
Chen, Ke Heng& Small, Susan A.. Elicitation of the Acoustic Change Complex to Long-Duration Speech Stimuli in Four-Month-Old Infants. International Journal of Otolaryngology No. 2015 (2015), pp.1-12.
https://search.emarefa.net/detail/BIM-1066268
American Medical Association (AMA)
Chen, Ke Heng& Small, Susan A.. Elicitation of the Acoustic Change Complex to Long-Duration Speech Stimuli in Four-Month-Old Infants. International Journal of Otolaryngology. 2015. Vol. 2015, no. 2015, pp.1-12.
https://search.emarefa.net/detail/BIM-1066268
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1066268