glabrous

Meissner corpuscle These nerve receptors lie just beneath the epidermis of glabrous skin, where they detect movement across the skin and fluttering touch.

Glabrous skin Hair-free skin is found mainly on the palms and soles.

Ruffini ending Found in the dermis of both hairy and glabrous skin, these sensory receptors respond optimally to stretching of skin.

Merkel cells are most dense in glabrous skin.

So, this Valentine’s Day, don’t attempt caress your sweetheart midargument, lest the posterior insular activation be suppressed. Perform your caress not on the glabrous skin of the palm or sole, but on the hairy skin of the limbs where the caress sensing fibers are found.