Why men love lingerie: Rat study offers hints


Male rats can be trained to find women rats sexier when clad in tiny coats. (Gonzalo R. Quintana Zunino)

Equally as underwear activates human males, tiny coats do the same for male rats, a new study discovers.


In an uncommon research, scientists allowed virgin male rats to have sex with ladies using unique rodent "coats." Later on, when experts gave the males a possibility to mate once again, the pets liked to mate with jacket-wearing women rats instead of with unclad ones.

The findings recommend that male animals can learn to link the view and feel of clothes with sex. [51 Sultry Information About Sex]

Simply puts, male rats learn that "each time my partner wears lingerie [a jacket], I'm visiting have sex," stated research co-author Gonzalo R. Quintana Zunino, a psychologist working in the laboratory of psychologist Jim Pfausat Concordia University in Montreal.

In previous researches, Zunino, Pfaus, and also their colleagues trained rats to link a particular smell (almond) with having sex, and also male rats preferentially mated with ladies bearing that scent.

This moment, the researchers desired to recognize whether rats could discover how to associate sex with other contextual signs, such as texture. In one experiment, a dozen virgin male rats were allowed to mate with females using jackets. Then, the men were placed in a chamber with two sexually responsive female rats, one wearing a coat as well as one "undressed."

Generally, when rats do the action, the male methods the female from behind as well as grabs hold of her on both sides, which excites her, Zunino told Live Science. If a human experimenter grabs the lady in this method, she does a little wiggling dancing, he said. If the lady is putting on a coat, the man will certainly feel it with his whiskers while they are mating.

The skilled male rats chose to mate with the jacket-clad females a lot more usually compared to with the unjacketed females, the scientists discovered. On top of that, the men made much more mounting efforts and also ejaculated quicker with the jacketed girls.

In a 2nd experiment, the researchers exposed virgin male rats initially to jacketed ladies that were sexually receptive, then to unjacketed ladies that were not sexually receptive. Then they place the rats in a chamber much like the initial experiment, with one women putting on a jacket as well as one not putting on a jacket.

Again, the trained men favored to mate with the jacketed ladies, placed them a lot more often and climaxed quicker, contrasted to with the unjacketed females.

Zunino and also his associates likewise really wanted to well-known exactly how the jacket encounter impacted activity in the rats' brains. Right after the male rats mated with the jacketed females, the analysts sacrificed the animals as well as infused a dye into their minds that reveals the task of a genetics called c-fos, which is a procedure of neural activation. Specifically, they considered c-fos task in the satisfaction centers of the rats' human brains, including areas called the ventral tegmental area and the nucleus accumbens.

Males that mated with jacket-wearing ladies showed more c-fos activity in these mind areas than did males that mated with jacketless ladies, preliminary results showed.

Taken together, the scientists experiments reveal that rats could learn how to associate sex with a range of contextual hints, consisting of the texture of clothing. While rats are quite different from humans, lingerie may have a similar impact on human men, Zunino stated.

The searchings for existed Nov. 17 at the 44th annual conference of the Society for Neuroscience in Washington, D.C.

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