All breast regardless of their size have the same number of nerves , so its generally thought that smaller breast are more sensitive as the nerves are closer together, whereas larger breast there is more surface area so the nerves are not as closely packed. .
Rutgers University researchers used an fMRI to find that nipple stimulation activated the medial paracentral lobule, or the part of a woman’s brain that also lights up with genital action.
In a classic study of 213 women, 29 percent of the females reported experiencing a nipple-gasm. Try this new titillating technique from Dr. Ava Cadell,Lick and kiss every centimetre of her breasts and follow with light fingertip caresses, leaving her nipples until last. “Cup your hand over one breast at a time so that the tip of her nipple rests in between your thumb and your index finger. Squeeze the fingers together so that you raise her nipple slightly and lick it with the tip of your tongue,” Cadell says. To enhance her arousal, Cadell suggests keeping an ice cube in your mouth.
The nipple is actually the least sensitive to touch, says Debbie Herbenick, Ph.D., the Men’s Health Sex Professor and a sexual-health researcher at Indiana University’s Kinsey Institute.
Austrian researchers found after testing 150 women that the top quarter of their breasts—think between 10 and 2 on a clock—felt sensations most strongly, then the areolas—the dark area circling the nipple—and surprisingly last, the nipple itself.
Don’t focus on one area, Herbenick says. The more territory covered, the better. Nipples vary widely in terms of sensitivity, so if you're not quite sure what she likes, you need to work your way up to nipple stimulation. Start off by gently stroking or massaging the tops, bottoms, and sides of her breasts. Alternate with lightly kissing her neck, earlobes, and collarbone. That'll help build anticipation and leave her wanting more..
If she's making a lot of noise or writhing around with pleasure, she's probably ready — move onto the areola, the dark-colored circle that surrounds the nipple, which is actually more sensitive than the nipple itself. Focus especially on the upper quadrant of her breast, between 10 and 2 o’clock. It’s the most sensitive part of the bull’s-eye. Gently stroke the nipple and circle the areola with a finger, or circle the nipple with your thumb and forefinger.
If she seems to be enjoying herself, use your tongue to very lightly draw circles around her nipple. If her nipple is erect, gently flick it with your tongue a few times before slowly and gently taking her nipple into your mouth. Alternate between licking and sucking on her nipple. (If she has inverted nipples, which approximately 10 to 20% of women do, you can lure the nipples out with touching, kissing, licking, and gentle sucking, but you might have to work a little harder.) After a while, you can give your mouth a break and go back to gently circling and stroking her nipples — she might enjoy the varying pressure.
Even if she's writhing and moaning with pleasure, you shouldn't get carried away and bite or pull her nipple without her consent. If you sense that she might like it rough, ask, "Do you want more?" or "Harder?" before nibbling on or pulling on her nipple. While some women really enjoy rough breast play, others do not, and you don't want to interrupt your good time or hers by crossing that line without her consent.
RN