Related Experiment Video
Updated: Jun 5, 2025
08:35
A Simple and Inexpensive Method for Determining Cold Sensitivity and Adaptation in Mice
Published on: March 17, 2015
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Bidirectionally responsive thermoreceptors encode cool and warm
Biorxiv : the Preprint Server for Biology
|December 9, 2024
Summary
This study reveals how thermoreceptors detect everyday cool and warm temperatures. The cool-sensitive TRPM8 channel explains how these receptors signal both sensations.
Area of Science:
- Neuroscience
- Sensory Biology
- Thermoreception
Background:
- Thermal sensation relies on primary afferent thermoreceptors.
- Encoding of noxious temperatures is well-studied, but innocuous temperature encoding remains unclear.
Purpose of the Study:
- To investigate how thermoreceptors encode innocuous cool and warm temperatures.
- To elucidate the peripheral mechanisms of thermal sensation.
Main Methods:
- In vivo two-photon calcium imaging in mouse dorsal root ganglia.
- In vivo pharmacology and computational modeling.
Main Results:
- The majority of thermoreceptors exhibit bidirectional responses, enhancing to cool and suppressing to warm.
- Conductance changes in the TRPM8 channel sufficiently explain these bidirectional responses.
Conclusions:
- This research clarifies fundamental principles of peripheral innocuous temperature encoding.
- The same thermoreceptor population appears to mediate distinct cool and warm sensations.
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