2006 Fiscal Year Final Research Report Summary
Information processing in auditory space
| Project/Area Number |
15209055
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Otorhinolaryngology
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| Research Institution | The University of Tokyo |
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Principal Investigator |
KAGA Kimitaka The University of Tbkyo, Faculty of Medicine, Professor, 医学部附属病院, 教授 (80082238)
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| Co-Investigator(Kenkyū-buntansha) |
YAMASOBA Tatsuya The University of Tbkyo, Faculty of Medicine, Associate Professor, 医学部附属病院, 助教授 (60251302)
ITO Ken The University of Tbkyo, Faculty of Medicine, Lecturer, 医学部附属病院, 講師 (50251286)
IWASAKI Shinichi The University of Tbkyo, Faculty of Medicine, Research Associate, 医学部附属病院, 助手 (10359606)
KARINO Shotaro The University of Tbkyo, Faculty of Medicine, Research Associate, 医学部附属病院, 助手 (00334376)
NAKANO Masayuki The University of Tbkyo, School of Engineering, Professor, 大学院工学研究科・工営部, 教授 (90242007)
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| Project Period (FY) |
2003 – 2006
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| Keywords | audition / Binaural hearing / Brainstem / cerebral auditory cortex / central auditory pathway |
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| Research Abstract |
In order to illuminate auditory space, sound lateralization tests were performed to compare the magnet coil bone-conduction headphone with the giant magnetostrictive bone-conduction headphone using 18 healthy participants. Although, no significant difference between these bone-conduction headphones was obtained for the interaural time difference and interaural intensity difference, a significant difference was obtained for the time-intensity trade. This revealed that the difference between the headphone is apparent in the integration of the heterogeneous sensations of the time and intensity difference at the cognitive level, but no difference is apparent between the homogeneous sensations of the discrimination of interaural time difference or interoaural intensity difference at the sensory level. It was concluded that the difference of the giant magnetostrictive headphone. However, sound localization test using speakers' method in the aneic room revealed that auditory space of bone conduction is smaller than that of airconductive.
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