Gated Visual Input to the Central Auditory System

Yoram Gutfreund · Weimin Zheng · Eric I. Knudsen

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Multisensory perception and integration Neuroscience and Music Perception Animal Vocal Communication and Behavior

Abstract

The central auditory system translates sound localization cues into a map of space guided, in part, by visual experience. In barn owls, this process takes place in the external nucleus of the inferior colliculus (ICX). However, to date, no trace of visual activity has been observed in this auditory nucleus. Here we show that strong visual responses, which are appropriate to guide auditory plasticity, appear in the ICX when inhibition is blocked in the optic tectum. Thus, visual spatial information is gated into the auditory system by an inhibitory mechanism that operates at a higher level in the brain.

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References

1982Auditory and visual maps of space in the optic tectum of the owl 1991Visual Instruction of the Neural Map of Auditory Space in the Developing Optic Tectum 1993Experience-dependent plasticity in the inferior colliculus: a site for visual calibration of the neural representation of auditory space in the barn owl 1989Neural maps of interaural time and intensity differences in the optic tectum of the barn owl 1991Stretched and upside-down maps of auditory space in the optic tectum of blind-reared owls; acoustic basis and behavioral correlates 1993Changes induced in the representation of auditory space in the superior colliculus by rearing ferrets with binocular eyelid suture 2002The optic tectum controls visually guided adaptive plasticity in the owl's auditory space map

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2012Interactive Coding of Visual Spatial Frequency and Auditory Amplitude-Modulation Rate 2021Visual Influences on Auditory Behavioral, Neural, and Perceptual Processes: A Review 2007Visual- and saccade-related signals in the primate inferior colliculus 2009Multisensory Enhancement in the Optic Tectum of the Barn Owl: Spike Count and Spike Timing 2010Multiple Manifestations of Microstimulation in the Optic Tectum: Eye Movements, Pupil Dilations, and Sensory Priming

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