Manipulating pre-feed, density of reinforcement, and extinction produces disruption in the Location variation of a temporal discrimination task in pigeons

Erin A. McClure, Kathryn A. Saulsgiver, Clive D.L. Wynne

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

When pharmacological and non-pharmacological agents are used to disrupt temporal discrimination, two major findings have emerged in the literature. One result reveals lateral shifts of the psychophysical curve for time due to disruptors, while the other is a decrease in accuracy for classifying short and long intervals and a flattening of the psychophysical curve. These results represent a discrepancy within the timing literature that requires clarification. The current study determined the effects of pre-feed, increased density of reinforcement during session, and extinction on the Location variation of a temporal discrimination procedure. The results showed that extinction and pre-feed (at higher levels), when presented in an acute fashion, led to right-ward shifts in the psychophysical curve. Our results, when compared to similar studies in the literature, suggest that lateral shifts are more likely to be found due to disruptors when the Location variation is being used and when procedures are less complicated.

Original languageEnglish (US)
Pages (from-to)85-89
Number of pages5
JournalBehavioural processes
Volume82
Issue number1
DOIs
StatePublished - Sep 1 2009
Externally publishedYes

Keywords

  • Extinction
  • Pigeon
  • Pre-feed
  • Stimulus control
  • Temporal discrimination
  • Timing

ASJC Scopus subject areas

  • Animal Science and Zoology
  • Behavioral Neuroscience

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