| 选择注意对畸变产物耳声发射的影响 |
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| 引用本文： | 王洪田,钟乃川.选择注意对畸变产物耳声发射的影响[J].临床耳鼻咽喉头颈外科杂志,1997,11(12):543-545. |
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| 作者姓名： | 王洪田 钟乃川 |
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| 作者单位： | 同济医科大学协和医院耳鼻咽喉科学教研室!武汉430022 |
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| 摘 要： | 为研究高级中枢对耳蜗微机制的调控作用，对正常人１６例（３２耳）进行有和无视觉选择任务条件下的畸变学产物耳声发射（ＤＰＯＡＥ）测试，结果显示视觉任务了出现时ＤＰＯＡＥ幅值下降，Ｆ２为１，２ｋＨｚ处的ＤＰＯＡＥ幅值下降达显著性水平（Ｐ〈０．０５）。讨论了调控作用的可能机制，认为研究高级中枢和橄榄耳蜗传出神经系统对耳蜗功能的影响将有十分重要的生理和病理意义。
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| 关 键 词： | 橄榄耳蜗 传出神经 畸变产物 耳声发射 高级中枢 |
Effects of selective attention on distortion product otoacoustic emissions |
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| Wang Hongtian, Zhong Naichuan.Effects of selective attention on distortion product otoacoustic emissions[J].Journal of Clinical Otorhinolaryngology,1997,11(12):543-545. |
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| Authors: | Wang Hongtian Zhong Naichuan |
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| Institution: | Department of Otolaryngology, Union Hospital of Tongji Medical University, Wuhan. |
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| Abstract: | To investigate the effects of upper central nervous system on cochlearmicromechanics, distortion product otoacoustic emissions (DPOAE) with and without a visualattention task were studied in l6 young subjects with normal hearing' The results showed that theDPOAE (2f1-f2) amplitude were reduced, and significantly decreased in 1 kHz and 2 kHz of F2. Inthe underlying mechanism of the effects, it is possible that the upper central nervous systemfacilitate the olivocochlear efferent system and then modulate the cochlear functions- It issuggested that the whole efferent system (from cerebral cortex to olivocochlear bundle) would beof great importance for cochlear function. |
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| Keywords: | Selective attention Olivocochlear efferent system Distortion product otoacoustic emissions Central nervous system |
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