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Related Experiment Video

Updated: Mar 9, 2026

Extinction Training During the Reconsolidation Window Prevents Recovery of Fear

Extinction Training During the Reconsolidation Window Prevents Recovery of Fear

Published on: August 24, 2012

Rescaling of temporal expectations during extinction.

Michael R Drew¹, Carolyn Walsh², Peter D Balsam²

¹Center for Learning and Memory.

Journal of Experimental Psychology. Animal Learning and Cognition

|January 4, 2017

Summary

Extinction learning is time-specific. Extending conditioned stimulus (CS) duration during extinction speeds response loss but impairs long-term memory, suggesting temporal displacement, not extinction, drives the effect.

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Last Updated: Mar 9, 2026

Extinction Training During the Reconsolidation Window Prevents Recovery of Fear

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Published on: August 24, 2012

Protocol for Studying Extinction of Conditioned Fear in Naturally Cycling Female Rats

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Area of Science:

Behavioral neuroscience
Learning and memory

Background:

Extinction learning is known to be temporally specific.
Modifying conditioned stimulus (CS) duration during extinction impacts conditioned response (CR) loss and retention.

Purpose of the Study:

To investigate the relationship between the temporal specificity of extinction and the timing of the conditioned response (CR).
To examine how changes in CS duration during extinction affect CR timing and retention.

Main Methods:

Two experiments utilized a conditioned magazine approach in rats.
Rats were trained with a fixed CS-unconditional stimulus interval and then extinguished with varying CS durations (6s, 12s, 24s).
Experiment 2 used partial reinforcement during training, while Experiment 1 used continuous reinforcement.

Main Results:

Extending CS duration during extinction accelerated CR diminution within the session.
Shortening CS duration did not slow extinction.
Extending CS duration led to temporal rescaling of the CR, with peak response rate shifting later in the trial, partially explaining faster CR loss.

Conclusions:

Results challenge the cumulative CS exposure hypothesis for extinction.
Temporally extended nonreinforced CS exposure appears to reduce conditioned responding through temporal displacement rather than extinction.
Findings highlight the critical role of temporal factors in extinction learning and memory.