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J Acoust Soc Am. 1990 Sep;88(3):1437-41.

Temporal responses of primarylike anteroventral cochlear nucleus units to the steady-state vowel /i/.

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Department of Experimental Psychology, School of Biological Sciences, University of Sussex, Falmer, Brighton, England.


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.

[Indexed for MEDLINE]

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