利用连续小波变换和短时傅立叶变换研究耳蜗细胞振动

Proceedings of 16th Annual International Conference of the IEEE Engineering in Medicine and Biology Society Pub Date : 1994-11-03 DOI:10.1109/IEMBS.1994.412132

M. Teich, C. Heneghan, S. Khanna, M. Ulfendahl

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引用次数: 3

摘要

采用连续小波变换(CWT)和短时傅立叶变换(STFT)分析了豚鼠内耳细胞运动的时间过程。单个听觉细胞(外毛细胞和亨森细胞)对调幅声信号的速度响应显示出非线性系统的典型特征。如谐波的产生。非线性效应在最高的刺激水平下特别明显，在那里也可以看到半谐波，有时也可以看到四分之一谐波成分。CWT和STFT在分析这些速度响应时都是有用的。

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Investigating cellular vibrations in the cochlea using the continuous wavelet transform and the short-time Fourier transform

The Continuous Wavelet Transform (CWT) and the Short-Time Fourier Transform (STFT) are used to analyze the time course of cellular motion in the guinea-pig inner ear. The velocity responses of individual auditory cells (outer hair cells and Hensen's cells) to amplitude-modulated (AM) acoustical signals display characteristics typical of nonlinear systems. such as harmonic generation. Nonlinear effects are particularly pronounced at the highest stimulus levels, where half-harmonic, and sometimes quarter-harmonic, components are also seen. Both the CWT and the STFT are found to be useful in analyzing these velocity responses.<>

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Proceedings of 16th Annual International Conference of the IEEE Engineering in Medicine and Biology Society

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