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Research on infant auditory temporal resolution using visual reinforcement audiometry(VRA) Yayoi Yamamoto 1 , Chie Obuchi 2 , Masae Shiroma 3 , Tsuneo Harashima 4 1Nippon Rowa Gakko, Reischaure-Kramer Nursery 2Department of Speech and Hearing Sciences, International University of Health and Welfare 3Department of Speech and Hearing Sciences, International University of Health and Welfare 4Faculty of Human Sciences, University of Tsukuba Keyword: 時間分解能 , VRA , 乳児 , ギャップ検出課題 , temporal resolution , visual reinforcement audiometry(VRA) , infant , gap detection task pp.32-39
Published Date 2017/3/15
DOI https://doi.org/10.11477/mf.6001200112
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 We investigated developmental changes of auditory temporal resolution in infants. Thirteen normally hearing (NH) infants underwent the gap detection task using visual reinforcement audiometry (VRA). The test stimuli were white noise with gaps, and gap conditions in the task were 5-25ms. We calculated each threshold and analyzed behavior responses to the auditory stimuli. The results showed that 6-7-month-old infants could detect 5ms gaps and auditory behavior responses changed from eye or body movements to orienting responses. The findings of this study indicate that NH infants acquire the time resolution ability at an early age. However, as some infants did not respond clearly to auditory stimuli, it was necessary to pay close attention to the infants' behavior. The results suggest that a similar study on a much larger population would be worthwhile in the future.


Copyright © 2017, Japanese Association of Speech-Language-Hearing Therapists. All rights reserved.

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電子版ISSN 印刷版ISSN 1349-5828 日本言語聴覚士協会

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