Winter I M, Palmer A R
Department of Experimental Psychology, School of Biological Sciences, University of Sussex, Falmer, Brighton, England.
J Acoust Soc Am. 1990 Sep;88(3):1437-41. doi: 10.1121/1.399720.
It has previously been shown that a population of units classified as "primarylike" and located in the ventral cochlear nucleus of the anesthetized guinea pig was unable to signal the position of the higher formant-related peaks (greater than 1.5 kHz) of steady-state vowels in terms of a temporal-place representation [Palmer et al., J. Acoust. Soc. Am. 79, 100-113 (1986)]. In this paper, it is demonstrated that units characterized by a prepotential in their spike waveform and a primarylike post-stimulus time histogram shape can encode the relative position of the formant peaks present in the spectra of steady-state vowels in terms of a temporal-place code. The possible reasons for the differences in the present results and the previous report are discussed.
先前的研究表明，在麻醉豚鼠的腹侧耳蜗核中，一类被归类为“初级样”的神经元群体，无法根据时间-位置表征来信号化稳态元音中高于1.5kHz的较高共振峰相关峰值的位置[帕尔默等人，《美国声学学会杂志》79, 100 - 113(1986)]。在本文中，证明了那些在其尖峰波形中具有预电位且具有初级样刺激后时间直方图形状的神经元，能够根据时间-位置编码来编码稳态元音频谱中存在的共振峰峰值的相对位置。讨论了当前结果与先前报告存在差异的可能原因。
