Nonconditionability of flexor reflex in the chronic spinal dog.

1 January 1969

journal article
Published by American Psychological Association (APA) in Journal of Comparative and Physiological Psychology

Vol. 68 (4) , 576-579
https://doi.org/10.1037/h0027635

Abstract

Attempted to classically condition the flexor reflex of 3 adult dogs upon whom a complete lower thoracic spinal transection was performed 12-15 mo. prior to the experiment. The CS consisted of a pulsatory pressure to the tail, a demonstrable and quantifiable neutral stimulus. A maximum of 2500 conditioning and 500 test trials yielded no recordable CRs. No CRs were elicited in sessions in which the sensitivity of the flexor reflex was increased by subcutaneous injections of .066 mg/kg of strychnine sulfate. The integrity of supraspinal as well as intraspinal pathways is necessary for classical conditioning of a spinal reflex. (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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