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Single unit responses in the auditory center of the frog mesencephalon to amplitude-modulated tones

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Abstract

Responses of most single neurons of the torus semicircularis ofRana ridibunda to stimuli of characteristic frequency and with low (10–30%) sinusoidal amplitude modulation were considerably stronger than those of the same neurons to pure tones. Analysis of phase histograms synchronized with the period of modulation was used to study dependence of the response on the frequency of modulation. In some cells the degree of modulation of the phase histogram fell steadily with an increase in modulation frequency, but in others a maximum was found in the 10–20 Hz region. Usually modulations of the phase histogram were significantly greater than stimulus modulation. The phase angle between the maximum of stimulus amplitude and the maximum of the unit response increased as an approximately linear function of the increase in modulation frequency.

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Authors
  1. N. G. Bibikov
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  2. O. N. Gorodetskaya
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Additional information

N. N. Andreev Acoustic Institute, Academy of Sciences of the USSR, Moscow. Translated from Neirofiziologiya, Vol. 12, No. 3, pp. 264–271, May–June, 1980.

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Bibikov, N.G., Gorodetskaya, O.N. Single unit responses in the auditory center of the frog mesencephalon to amplitude-modulated tones. Neurophysiology 12, 185–191 (1980). https://doi.org/10.1007/BF01068051

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  • DOI: https://doi.org/10.1007/BF01068051

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