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Journal of the Experimental Analysis of Behavior logoLink to Journal of the Experimental Analysis of Behavior
. 1972 Jul;18(1):147–153. doi: 10.1901/jeab.1972.18-147

Incompatability between the pigeons' unconditioned response to shock and the conditioned key-peck response1

Richard F Smith, Carl R Gustavson, Gary L Gregor
PMCID: PMC1333994  PMID: 16811612

Abstract

High-speed photography was used to compare the pigeon's response to unsignalled shock with the pigeon's key-peck response. During shock, pigeons flex their neck (i.e., the distance between their eyes and shoulders decreases). Following shock, the neck is extended. During key pecking, the neck remains extended and the head moves toward the key in a slight arc as though attached to a fixed fulcrum. Response topography during pecking and shock appear to be incompatible, and it is concluded that the difficulty in key-peck training pigeons to escape electric shock is due to interference from the unconditioned flexion response. This conclusion supports the species-specific defense theory of escape and avoidance behavior.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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