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Published July 1, 1984 | Published
Journal Article Open

Time and intensity cues are processed independently in the auditory system of the owl

Abstract

Space-specific neurons, found in the barn owl's inferior colliculus, respond selectively to a narrow range of interaural time and intensity differences. We show that injecting a local anesthetic into one cochlear nucleus, nucleus magnocellularis, alters the space-specific cell's selectivity for interaural time difference, leaving its selectivity for interaural intensity difference intact. Anesthetizing the other cochlear nucleus, nucleus angularis, has the converse effects. We show also that the space-specific neuron's selectivity for one interaural cue is the same for all effective values of the other cue. We conclude that time and intensity cues are processed in separate neural channels of the barn owl's auditory system and that the two cues operate independently.

Additional Information

© 1984 by Society for Neuroscience. For the first six months after publication SfN's license will be exclusive. Beginning six months after publication the Work will be made freely available to the public on SfN's website to copy, distribute, or display under a Creative Commons Attribution 4.0 International (CC BY 4.0) license (https://creativecommons.org/licenses/by/4.0/). Received October 7, 1983; Revised January 16, 1984; Accepted January 20, 1984. We thank Drs. W. E. Sullivan and E. I. Knudsen for their critique of our manuscript. This work was supported by Del E. Webb Fellowships to A. M. and T. T. and by National Institutes of Health Grant NS14617 to M. K.

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August 19, 2023
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