2010 Fiscal Year Final Research Report
The research and development of the new objective audiometry technique using an auditory steady-state response (ASSR) in sleeping subjects
| Project/Area Number |
21791591
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Otorhinolaryngology
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| Research Institution | Yamagata University |
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Principal Investigator |
ITO Tsukasa Yamagata University, 医学部, 助教 (50344809)
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| Research Collaborator |
KUBOTA Toshinori 山形大学, 医学部, 医員 (80536954)
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| Project Period (FY) |
2009 – 2010
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| Keywords | 聴性定常反応 / 他覚的聴力検査 / 小児難聴 / 睡眠 / 新生児聴覚スクリーニング / 精密聴力検査 |
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| Research Abstract |
We analyzed the ASSR signal in contrast to the background noise at different sleep stages. The noise level was especially low in stage N3 (deep sleep) and REM (rapid eye movement sleep), whereas there was no significant difference in the response signals among sleep stages. Consequently, the signal-to-noise ratio (SNR) was high in both stage N2, N3 and REM. Hence, sleep stage should be taken into account when estimating the hearing level fromASSR.
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