The results suggest that mammals may have evolved this propensity for caressing to encourage good hygiene through social grooming. It may also explain why certain hair-covered areas of the human body (think armpits, pubic hair) are more sensitive to touch or associated with pleasure.
Saturday, February 2, 2013
Why petting feels good.
"Researchers looked at this phenomenon in lab mice and found that stroking stimulates a very specific set of neurons that have to do with hair."
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