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Related Experiment Video

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Whisker-signaled Eyeblink Classical Conditioning in Head-fixed Mice

Whisker-signaled Eyeblink Classical Conditioning in Head-fixed Mice

Published on: March 30, 2016

Affective modulation of conditioned eyeblinks.

Suvi Karla¹, Timo Ruusuvirta, Jan Wikgren

¹Department of Psychology, University of Jyväskylä, P.O. Box 35, FIN-40014 Jyväskylä, Finland.

Biological Psychology

|July 8, 2009

Summary

Emotional states influence learned defensive behaviors. This study found that unpleasant images amplified conditioned eyeblink responses, supporting the motivational priming hypothesis for learned defensive actions.

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Area of Science:

Psychology
Neuroscience
Behavioral Science

Background:

Affective states significantly modulate innate reflexive actions.
Aversive states are known to potentiate defensive reflexes, while appetitive states diminish them.

Purpose of the Study:

To investigate if affective states also modulate associatively learned defensive behaviors.
Specifically, to examine the effect of emotional stimuli on conditioned eyeblink responses.

Main Methods:

Delay eyeblink conditioning was employed with human participants viewing neutral images.
Conditioned eyeblink responses (CRs) were subsequently tested during exposure to unpleasant, neutral, and pleasant images.

Main Results:

The most vigorous conditioned eyeblink responses (CRs) were observed during the presentation of unpleasant images.
No significant difference in CRs was found between neutral and pleasant image conditions.

Conclusions:

Affective states, particularly aversive ones, can potentiate associatively learned defensive behaviors like eyeblinking.
These findings partially support the motivational priming hypothesis in the context of learned defensive responses.