2009 Fiscal Year Final Research Report
Auditory Feature Extraction and Processing
| Project/Area Number |
17023027
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| Research Category |
Grant-in-Aid for Scientific Research on Priority Areas
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| Allocation Type | Single-year Grants |
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| Review Section |
Biological Sciences
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| Research Institution | Kyoto University |
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Principal Investigator |
OHMORI Harunori Kyoto University, 医学研究科, 教授 (30126015)
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| Co-Investigator(Kenkyū-buntansha) |
ISHII Takahiro 京都大学, 医学研究科, 准教授 (40303812)
KUBA Hirosi 京都大学, 医学研究科, 助教 (10362469)
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| Project Period (FY) |
2005 – 2009
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| Keywords | 聴覚 / 特徴抽出 / シナプス / 音源定位 / 両耳間時差 |
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| Research Abstract |
We have intended to understand mechanisms of feature extraction and processing of sound information as activities of synapse and individual neuronal cells. Features of sounds such as time and intensity are important binaural cues for localizing the source Interaural time differences (ITDs) and interaural level differences (ILDs) are known extracted and processed in parallel by separate pathways in the brainstem auditory nuclei. ITD cues are small, and processing of that cue is optimized along the frequency axis by both morphological and physiological specializations. Moreover, we found that ITD and ILD cues are not processed independently but cooperatively to improve the detection of interaual differences. Thus, we have succeeded to understand some principal mechanism of auditory information processing in the brainstem nuclei.
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