Elsevier

Brain Research

Volume 765, Issue 1, 8 August 1997, Pages 173-176
Brain Research

Short communication
Substrate for rapid feedforward inhibition of the auditory forebrain

https://doi.org/10.1016/S0006-8993(97)00654-9Get rights and content

Abstract

A sizeable, feedforward, GABAergic projection exists from the inferior colliculus to the medial geniculate body in cats. We compared the dimensions of GABA-immunoreactive and non-immunoreactive axons in the brachium of the cat inferior colliculus, and demonstrate that GABA-immunoreactive axons are among the largest of brachial axons. We propose that, based on their large size, GABAergic tectothalamic axons provide a substrate for rapid feedforward inhibition of geniculate neurons.

Section snippets

Note added in proof

The preliminary report cited in [2]has been published: D. Peruzzi, E. Bartlett, P.H. Smith, D.L. Oliver, A monosynaptic GABAergic input from the inferior colliculus to the medial geniculate body in rat, J. Neurosci. 17 (1997) 3766–3777.

Acknowledgements

This research was supported by Public Health Service Grant, R01 DC00726, from the National Institute on Deafness and Other Communication Disorders (NIH).

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