| 稳态白噪声对豚鼠听觉脑干诱发反应(ABR)功率谱的影响 |
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| 引用本文： | 郭连生,杨宜林,戚以胜,弓奇志,刘红光. 稳态白噪声对豚鼠听觉脑干诱发反应(ABR)功率谱的影响[J]. 生物物理学报, 1991, 7(1): 5-9 |
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| 作者姓名： | 郭连生 杨宜林 戚以胜 弓奇志 刘红光 |
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| 作者单位： | 北京市耳鼻咽喉科研究所(郭连生，杨宜林，戚以胜，弓奇志)，北京市耳鼻咽喉科研究所(刘红光) |
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| 摘 要： | 本文对豚鼠125和131dBSPL稳态白噪声暴露后听觉脑干诱发反应(ABR)功率谱进行了研究.研究结果表明:125dBSPL噪声暴露组0—200、210—500Hz频段谱能量比对照组相应频段谱能量增多(P<0.05),而510—900Hz频段谱能量却显著下降(P<0.01);131dBSPL噪声暴露组0-200Hz频段谱能量显著下降(P<0.01),但210-500Hz、910-1400Hz频段谱能量却明显增多(P<0.01).
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| 关 键 词： | 听觉功能 功率谱 稳态白噪声 ABR |
THE EFFECTS OF STEADY WHITE NOISE ON THE POWER SPECTRA OF AUDITORY BRAINSTEM RESPONSES (ABRs) IN GUINEA PIGS |
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| Abstract: | The power spectra of ABRs in guinea pigs exposed to the steady white noise at level 125 and 131 dBSPL have been analysed in this paper. In comparison with the control group, the exposed group to noise at level 125 dBSPL the spectral energies of frequency band at 0-200 Hz and 210-500 Hz are increasing(P< 0.05), and the spectra energy of frequency band at 510-900 Hz decreases remarkably (P<0.01). Moreover, the exposed group to noise at level 131 dBSPL the spectral energy of frequency band af 0-200Hz decreases significantly (P<0.01) , and the spectral energies of frequency band at 210-500 Hz and 910-1400 Hz are markedly increasing (P<0.01). |
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