Extinction context as a conditioned inhibitor |
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| Authors: | Polack Cody W Laborda Mario A Miller Ralph R |
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| Institution: | (1) Department of Psychology, State University of New York at Binghamton, Binghamton, NY 13902-6000, USA;(2) Departamento de Psicolog?a, Universidad de Chile, Santiago, Chile; |
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| Abstract: | Two lick suppression experiments using rats were conducted to determine whether extinction of a punctate excitor in a particular
context would result in that context becoming a conditioned inhibitor, as defined by passing both summation and retardation
tests. The role of extinction trial spacing was investigated as a possible determinant of whether the extinction context would
become inhibitory. Experiment 1 demonstrated that, although inhibition was evident using either massed or spaced extinction trials, spaced trials reduced
measurable inhibition as assessed by the summation test, but trial spacing had no influence on retardation test performance.
Experiment 2 confirmed Experiment 1’s conclusions while controlling for the influence of latent inhibition on the retardation test. In Experiment 2, the context proved inhibitory only following massed extinction trials. These data suggest that, at least with select parameters,
an extinction context can become inhibitory. |
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