| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Pitch Shift in Exsomatized Cochlea Observed by Laser Interferometry |
| Zhang-Cai Long1, Tao Shen1, Yan-Ping Zhang2, Lin Luo3** |
1School of Physics, Huazhong University of Science and Technology, Wuhan 430074
2Affiliated Hospital, Huazhong University of Science and Technology, Wuhan 430074
3Department of Chinese language and literature, Huazhong University of Science and Technology, Wuhan 430074
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| Cite this article: |
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Zhang-Cai Long, Tao Shen, Yan-Ping Zhang et al 2019 Chin. Phys. Lett. 36 024302 |
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Abstract Pitch is one of the most important auditory perception characteristics of sound; however, the mechanism underlying the pitch perception of sound is unclear. Although theoretical researches have suggested that perception of virtual pitch is connected with physics in cochlea of inner ear, there is no direct experimental observation of virtual pitch processing in the cochlea. By laser interferometry, we observe shift phenomena of virtual pitch in basilar membrane vibration of exsomatized cochlea, which is consistent with perceptual pitch shift observed in psychoacoustic experiments. This means that the complex mechanical vibration of basilar membrane in cochlea plays an important role in pitch information processing during hearing.
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Received: 23 October 2018
Published: 22 January 2019
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| Fund: Supported by the National Natural Science Foundation of China under Grant Nos 11374118 and 90820001. |
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