Erogenous zone

Erogenous zones are located all over the human body, but the sensitivity of each varies, and depends on concentrations of nerve endings that can provide pleasurable sensations when stimulated.

Many people are gently aroused when their eyelids, eyebrows, temples, shoulders, hands, arms, and hair are subtly touched.

Specific zones are associated with sexual response, and include the lips and nipples in addition to areas of the genitals, notably corona of the glans penis, clitoris and perianal skin.

[citation needed] These zones have a high density of innervation, and may have an efficiency of wound healing and a capacity to stimulate generalized cerebral arousal.

[4][5][8][9] Within the anterior wall of the vagina, there is a patch of ribbed rough tissue which has a texture that is sometimes described as similar to the palate (the roof of a mouth) or a raspberry, and may feel spongy when a woman is sexually aroused.

[5] Some people find whispering or breathing softly in the ear to be pleasurable and relaxing, as well as licking, biting, caressing and/or kissing it especially the area of and behind the earlobe.

Having the chest, breasts and nipples stimulated manually (hands, fingers) or orally (mouth, lips, teeth, tongue) is a pleasurable experience for many people of both sexes.

Many people find stimulation (kissing, biting, scratching, tickling, caressing) of the abdomen to be pleasurable, especially close to the pubic region.

Caressing with fingers or tongue, more vigorous kneading, and butterfly kissing can initiate arousal and, in some cases, induce clitoral/vaginal orgasm or penile ejaculation without direct contact with the latter areas.

[citation needed] The mid-arm bend is especially sensitive due to the thinner skin found there, which makes nerve endings more accessible.

[19] George Preti, an organic chemist at the Monell Chemical Senses Center in Philadelphia and Winnefred Cutler of the University of Pennsylvania's psychology department, discovered that women with irregular menstrual cycles became regular when exposed to male underarm extracts.