A Neural Map of Interaural Intensity Differences in the Brain Stem of the Barn Owl
Abstract
The nucleus ventralis lemnisci lateralis pars posterior (VLVp) is the first binaural station in the intensity-processing pathway of the barn owl. Contralateral stimulation excites and ipsilateral stimulation inhibits VLVp cells. The strength of the inhibition declines systematically from dorsal to ventral within the nucleus. Cells selective for different intensity disparities occur in an orderly sequence from dorsal to ventral within each isofrequency lamina. Cells at intermediate depths in the nucleus are selective for a particular narrow range of interaural intensity differences independently of the absolute sound-pressure level. A simple model of the interaction between inhibition and excitation can explain most of the response properties of VLVp neurons. The map of selectivity for intensity disparity is mainly based on the gradient of inhibition.
Additional Information
© 1988 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 Feb. 4, 1987; revised Dec.15, 1987; accepted Dec. 15, 1987. We thank Gene Akutagawa for excellent histology, Terry Takahashi and Hermann Wagner for introducing G.A.M. and C.K. to computer programs, and Andy Moisetf, who wrote some of the programs. We also thank 0. Gleich, U. Hausler, G. Klump, E. Knudsen, H.-J. Leppelsack, H. Oeckinghaus, T. Takahashi, and H. Wagner for commenting on an earlier version of the manuscript. This work was supported by an NIH grant to M.K., by a travel fellowship to G.A.M. from the Volkswagenstiftung, and by the Deutsche Forschungsgemeinschaft within the program of the SFB 204, "Gehör."Attached Files
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Additional details
- PMCID
- PMC6569385
- Eprint ID
- 62546
- Resolver ID
- CaltechAUTHORS:20151202-114353092
- NIH
- Volkswagenstiftung
- SFB 204
- Deutsche Forschungsgemeinschaft (DFG)
- Created
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2015-12-02Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field