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Touch & Pain
The skin contains three classes of tactile receptors that respond to:
- touch (pressure and vibration)
- temperature (hot and cold)
- pain (tissue damage)
Pain is more strongly affected by our interpretation of the effects of the stimulus being detected and has a strong emotional component.
The primary somatosensory cortex is topographically organized, meaning that each region of it receives tactile signals from a particular region of the body.
Tactile receptors are not equally distributed - your fingertips are more sensitive than your kneecaps!
Practice: Touch & Pain
The area of the brain that receives information about heat, cold, and touch is the: