The Science of Temperature Perception

The video explains how humans perceive temperature through specialized neurons called thermoreceptors and nociceptors. Thermoreceptors detect normal temperature changes, while nociceptors sense potentially harmful temperatures. An experiment by Fredrik Lindstedt demonstrates the thermal grill illusion, where simultaneous exposure to warm and cool stimuli creates a burning sensation. A scientific study using fMRI reveals that this illusion activates the thalamus and pain matrix in the brain. The video also notes that scratching injuries releases endorphins to alleviate pain.

How does the brain respond to the sensations detected by nociceptors?

What was the purpose of Fredrik Lindstedt's experiment with the Frankfurters?