Clue to sexual attraction discovered in lesbian brain

July 29, 2020 by  
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Clue to sexual attraction discovered in lesbian brain

Lesbian and women that are heterosexual differently to particular peoples odours, a brain-scanning study has discovered. The homosexual females showed brain that is similar to heterosexual males if they inhaled specific chemical substances, which might be pheromones, the scientists say.

“But our research can’t answer questions of cause and effect, ” cautions lead researcher Ivanka Savic in the Karolinska Institute in Stockholm, Sweden. “We can’t state if the distinctions are due to pre-existing variations in their minds, or if previous experiences that are sexual trained their minds to respond differently. ”

Savic and her peers asked 12 women that are lesbian 12 heterosexual ladies to breathe focused samples of two steroids: EST, that is produced from oestrogen and discovered within the urine of expectant mothers; and plus, which will be produced from progesterone and discovered in men’s armpit perspiration.

Positron emission tomography (animal) scans revealed which parts of the brains that are women’s to every chemical. Once the heterosexual ladies smelled AND their brains showed activity within the hypothalamus that is anterior an area of this mind considered to process sexual cues. But EST just produced task within the region that is olfactory of minds, the area that processes smells.

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The lesbians, nevertheless, just revealed task within the region that is olfactory odour they smelled.

Intimate choice

The researchers conclude why these “pheromone-like stimuli” create various reactions within the anterior hypothalamus of females of different intimate orientations, and that their research supports the concept that the anterior hypothalamus plays a role in sexual preference.

The pattern of task into the minds of lesbians for both chemicals had been that is similar maybe perhaps not identical – towards the pattern for heterosexual males. Read more