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A neural map of interaural intensity differences in the brain stem of the barn owl.

Authors
  • Manley, G A
  • Köppl, C
  • Konishi, M
Type
Published Article
Journal
The Journal of neuroscience : the official journal of the Society for Neuroscience
Publication Date
Aug 01, 1988
Volume
8
Issue
8
Pages
2665–2676
Identifiers
PMID: 3411346
Source
Medline
License
Unknown

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.

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