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Local time horizons in Pavlovian learning

R C Barnet¹, N J Grahame, R R Miller

¹Department of Psychology, State University of New York, Binghamton 13902-6000.

Journal of Experimental Psychology. Animal Behavior Processes

|July 1, 1993

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Local context cues impair conditioned stimulus (CS) responding. Excitatory cues preceding or following the target CS similarly affected performance, suggesting a symmetrical memory integration window for Pavlovian conditioning.

Area of Science:

Behavioral Neuroscience
Learning and Memory
Animal Behavior

Background:

Pavlovian conditioning involves learning associations between stimuli.
Contextual cues can influence conditioned responses.
Previous research suggests local context can impair conditioned stimulus (CS) responding.

Purpose of the Study:

To investigate whether excitatory local context cues impairing CS responding arise from preceding or following cues.
To determine the temporal symmetry of context effects in Pavlovian conditioning.

Main Methods:

Four lick suppression experiments were conducted using rats.
Pretrained nontarget stimuli served as local context cues.
Context cues were presented before and/or after the target CS with varying intervals.

Related Experiment Videos

Main Results:

Both preceding and following nontarget cues exerted similar control over responding to the target CS.
The temporal proximity of context cues to the target CS influenced their effect.

Conclusions:

The findings imply a symmetrical window of memory integration for a conditioned stimulus (CS).
This suggests that excitatory context cues, whether before or after the CS, can similarly impair conditioned responding.
The study contributes to understanding the mechanisms of context effects in associative learning.