Cochlear nerve responses to waveform singularities and envelope corners.

E R Lewis; K R Henry

doi:10.1016/0378-5955(89)90092-0

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Cochlear nerve responses to waveform singularities and envelope corners.

E R Lewis·K R Henry

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Abstract

One way that discrete acoustic events may be signaled to the central nervous system is through spike synchrony over a subpopulation of cochlear axons. Each of the four corners of a trapezoidally modulated tone burst is such an event. Ordinarily, each corner comprises both an abrupt change in envelope slope and a singularity in the modulated waveform. In this study, in addition to stimuli of this sort, we employed a stimulus waveform in which a corner occurred without a waveform singularity. We obtained masker tuning curves for the CAPs corresponding to both kinds of corners and single-unit responses to both kinds of corners. The results suggest that the subpopulation of cochlear axons excited by the singularity component of a corner is distinct from that excited by the abrupt change in envelope slope.

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Acoustic Stimulation Action Potentials Animals Cochlear Nerve Generalization, Response Gerbillinae Perceptual Masking Journal Article

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E R Lewis, K R Henry. 1989. Cochlear nerve responses to waveform singularities and envelope corners.. https://doi.org/10.1016/0378-5955(89)90092-0

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