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Published on: January 21, 2017
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Controllability changes pain perception by increasing the precision of expectations.
Marie Habermann1, Christian Büchel2
1Department of Systems Neuroscience, University Medical Center Hamburg-Eppendorf, Hamburg, Germany. habermann.science@gmail.com.
Nature Communications
|November 18, 2025
Summary
Feeling in control of pain reduces its intensity by increasing expectation precision, not just predictability. This finding contrasts with conditions where pain is predictable but uncontrollable.
Area of Science:
- Neuroscience
- Psychology
- Pain Research
Background:
- Perception of unpleasant experiences, like pain, can be modulated by the ability to exert control.
- It is commonly assumed that control mechanisms directly influence pain perception.
Purpose of the Study:
- To investigate the precise mechanism by which control modulates acute pain perception.
- To differentiate the effects of control from mere predictability of painful stimuli.
Main Methods:
- Utilized a task where participants could either control or predict painful stimulus intensity.
- Employed computational models approximating Bayesian perceptual integration to analyze data.
Main Results:
- Acute pain modulation by control is explained by increased expectation precision.
- This effect was observed specifically in the controllable condition, distinct from predictable-only conditions.
- Increased expectation precision correlated with activation changes in brain regions like the periaqueductal gray, supplementary motor area, and rostral anterior cingulate cortex.
Conclusions:
- Control over pain enhances perception modulation through increased expectation precision.
- Brain regions involved in threat uncertainty, motor control, and descending pain modulation are activated by this process.
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