Why does tactile acuity decrease when a finger explores a surface with rapidly alternating hot and cold patches?

💡 Explanation

Tactile acuity decreases because the rapid temperature changes cause activation of both cold and warm thermoreceptors simultaneously. This thermal crosstalk leads to a blurring of spatial information reaching the somatosensory cortex, therefore reducing tactile acuity, rather than solely adapting thermoreceptors or affecting ATP levels directly.

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