Effect of conditioned stimulus intensity on visually conditioned heart rate change in the pigeon: A sensitization mechanism.

1 January 1974

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

Vol. 87 (3) , 495-499
https://doi.org/10.1037/h0036984

Abstract

In visually conditioned heart-rate change in 30 White Carneaux pigeons, increasing the conditioned stimulus intensity enhanced performance. The effect, which only appeared at high intensity levels, was obtained during acquisition and with rigorous maintenance of constant stimulus conditions. A similar effect was obtained with 10 sensitization control Ss. Evidence is presented that the stimulus intensity effect during conditioning may have totally reflected increased sensitization such that the locus of the effect was upon performance rather than conditioning per se. (18 ref) (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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