Abstract
Purpose: The aim of this study was to determine whether there was a correlation between auditory steady-state responses (ASSRs) for complex toneburst stimuli and speech feature discrimination (SFD) abilities in young infants. Study Sample: Seventeen infants (mean age = 9.4 months) and 21 adults (mean age = 27 years) with normal hearing had ASSR and SFD tests. Data Collection: The ASSR test employed an eight-component complex toneburst stimulus; threshold and input-output functions were determined as level was systematically varied. The SFD test utilized an observer-based, visual-reinforcement test procedure to determine the infant's ability to detect the speech feature change from /ba/ to /da/. Results: The correlation of the group mean /ba/-/da/ discrimination performance (percent correct) with the group mean ASSR score (percent responses present) ranged from r = 0.64 for the 1500 Hz amplitude-modulated and frequency-modulated tone burst to 0.99 for ASSRs for all stimulus components; however, correlations between ASSRs and SFD scores for individual subjects were modest. Conclusion: The ASSR and SFD results appear to reflect the audibility of the stimuli.
Original language | English (US) |
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Pages (from-to) | 629-643 |
Number of pages | 15 |
Journal | Journal of the American Academy of Audiology |
Volume | 20 |
Issue number | 10 |
DOIs | |
State | Published - 2009 |
Keywords
- Auditory evoked potentials
- Infants
- Speech audiometry
ASJC Scopus subject areas
- Speech and Hearing