Responses of auditory-nerve fibers to consonant-vowel syllables.
Responses of auditory-nerve fibers to consonant-vowel syllables.
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DOI：
10.1121/1.386208
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发表时间：
1981-05
期刊：
影响因子：
--
通讯作者：
D. Sinex;C. Geisler
中科院分区：
文献类型：
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作者：
D. Sinex;C. Geisler
本文研究了由一组合成的辅音-元音（CV）音节在猫听神经中引起的放电模式。这些音节被听到为/ba/、/da/或/ga/，包括一个25-、50-或75-ms的共振峰过渡，随后是一段稳态元音。数据进行了分析的平均放电率和放电的同步性方面的各种光谱成分的刺激。结果略有不同，从以前的报告的反应元音[萨克斯和杨，J。美国社会66，470-479（1979）; Young和Sachs，J. Acoust.美国社会66，1381-1403（1979）]，因为平均放电速率似乎提供了关于共振峰转换的谱的比它们关于稳态元音的谱的更多的信息。这种差异反映了共振峰移动所产生的音节频谱的变化。然而，放电的同步性可以提供比平均放电速率更详细的关于CV的光谱的信息。每根纤维在特定刺激周时间的反应可以由“主导反应分量”来表征，即周期直方图的傅立叶变换中的最大峰。前三个共振峰的轨迹可以从纤维样本中“主导成分”的变化来推断。
The discharge patterns elicited by a set of synthesized consonant-vowel (CV) syllables were studied in the auditory nerve of the cat. The syllables, heard as /ba/, /da/, or /ga/, included a 25-, 50-, or 75-ms formant transition followed by a segment of steady-state vowel. The data were analyzed in terms of average discharge rate and in terms of the synchrony of discharges with respect to various spectral components of the stimuli. The results differ slightly from those of previous reports of the responses to vowels [Sachs and Young, J. Acoust. Soc. Am. 66, 470-479 (1979); Young and Sachs, J. Acoust. Soc. Am. 66, 1381-1403 (1979)], in that average discharge rates appear to provide more information about the spectra of formant transitions than they do about the spectra of steady-state vowels. This difference reflects changes in the spectrum of the syllable produced by movements of the formants. The synchrony of discharges, however, may provide more detailed information about the spectra of CVs than does average discharge rate. Each fiber's response at a particular peristimulus time may be characterized by the "dominant response component," the largest peak in the Fourier transform of the period histogram. The trajectories of the first three formants can be inferred from changes in the "dominant components" in a sample of fibers.