Interestingly, by recording the electrical activity in the spinal cords of mice depleted of NPY interneurons, the researchers discovered that the NPY neurons seem to selectively inhibit or gate light touch signals coming from hairy skin, but not the non-hairy (glabrous) skin, such as the skin found on your palm. (sciencedaily.com)
Though other research indicates pleasantness ratings were higher when hairy skin was stimulated, the findings confirmed we can perceive tactile pleasure using just our fingertips. (discovermagazine.com)