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Stress-induced analgesia: adaptive pain suppression
Physiological Reviews
|October 1, 1986
Summary
Stress-induced analgesia (SIA) allows animals to react to threats by reducing pain perception. This biological mechanism enables adaptive behaviors crucial for survival in critical situations.
Area of Science:
- Neuroscience
- Pain Research
- Behavioral Biology
Background:
- Stress-induced analgesia (SIA) is a complex biological phenomenon.
- Understanding SIA is crucial for comprehending pain modulation and adaptive behaviors.
Purpose of the Study:
- To examine the phenomenon of stress-induced analgesia.
- To explore methods for measuring analgesia and assessing adaptive behavior capacity.
- To investigate the role of neurotransmitter and neuropeptide systems in SIA.
Main Methods:
- Described procedures for measuring analgesia.
- Suggested test designs to assess pain threshold and adaptive behavior.
- Examined neurotransmitter and neuropeptide systems affected by SIA-inducing manipulations.
Main Results:
- Tests can indicate pain threshold changes and evaluate adaptive behavior.
- Pain may have sensory/discriminative and motivational/affective components.
- Neurotransmitter and neuropeptide systems are involved in SIA, learning, motivation, and performance.
Conclusions:
- SIA provides a functional advantage by reducing pain during stressful situations.
- Inhibition of the pain system allows for adaptive responses that enhance survival.
- Neurochemical systems play an integral role in mediating these survival-expediting responses.