Conditioning pp 233-248 | Cite as

Neurophysiologic Correlates of Latent Facilitation

  • C. D. Woody
Part of the Advances in Behavioral Biology book series (ABBI, volume 26)


Classical conditioning is now recognized to represent a combination of several different underlying phenomena. Some of these phenomena may be produced nonassociatively in the course of conditioning. These are not simply epiphenomena of conditioning, but, as recent studies indicate, each may contribute significantly to major facets of conditioning itself. The present report concerns neurophysiologic correlates of latent facilitation. Latent facilitation of subsequently learned motor responses is thought to occur nonassociatively following repeated presentations of a US. In cats, latent facilitation of an eyeblink response is paralleled by the development of increased excitability in neurons of the motor cortex and in facial motoneurons projecting to the musculature involved with blinking. This facilitation may result, in part, from activation of cholinergic pathways to the pyramidal cells of the motor cortex.


Motor Cortex Unconditioned Stimulus Classical Conditioning Input Resistance Eyeblink Conditioning 
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Copyright information

© Springer Science+Business Media New York 1982

Authors and Affiliations

  • C. D. Woody
    • 1
  1. 1.Departments of Anatomy and PsychiatryUCLA Medical CenterLos AngelesUSA

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