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Investigating Pain-Related Avoidance Behavior using a Robotic Arm-Reaching Paradigm

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Expectations and uncertainty shape pain perception during learning.

Mégane Lacombe-Thibault¹, Michel-Pierre Coll¹

¹School of Psychology, Université Laval, 2325 Rue des Bibliothèques, Québec, Québec G1V 0A6, Canada; Centre interdisciplinaire de recherche en réadaptation et intégration sociale, 525 Boulevard Wilfrid-Hamel, Québec, Québec G1M 2S8, Canada.

The Journal of Pain

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Summary

Uncertainty significantly impacts how people learn and perceive pain, with effects differing based on pain intensity. Depressive symptoms may also alter pain learning rates.

Keywords:

Computational modeling Expectations Learning Pain Uncertainty

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Published on: January 21, 2017

Area of Science:

Neuroscience
Cognitive Psychology
Computational Psychiatry

Background:

Pain perception is influenced by expectations and learning.
The role of uncertainty in pain perception and learning remains unclear.

Purpose of the Study:

To investigate the relationship between uncertainty, pain learning, and pain perception.
To model how individuals adapt their beliefs under changing uncertainty levels.

Main Methods:

Hierarchical Bayesian modeling was used to analyze data from an aversive learning task.
Participants learned cue-pain contingencies under varying levels of uncertainty.
Model-free and computational modeling approaches were employed.

Main Results:

Unexpected trials led to decreased accuracy and increased response times.
Uncertainty differentially affected pain perception: high pain perception increased with uncertainty, while low pain perception showed a non-significant trend to decrease.
Depressive symptoms were correlated with reduced learning rates.

Conclusions:

Uncertainty modulates pain perception and learning in dynamic environments.
Findings suggest a link between altered pain learning, psychological traits like depression, and chronic pain conditions.