Lesbian and heterosexual ladies respond differently to particular peoples odours, a brain-scanning research has discovered. The homosexual ladies revealed brain that is similar to heterosexual males if they inhaled specific chemicals, which might be pheromones, the researchers say. nudelive. com
“But our research can’t answer questions of cause and effect, ” cautions lead researcher Ivanka Savic during the Karolinska Institute in Stockholm, Sweden. “We can’t state whether or not the distinctions are as a result of pre-existing variations in their minds, or if previous experiences that are sexual trained their minds to react differently. ”
Savic along with her peers asked 12 women that are lesbian 12 heterosexual ladies to breathe focused samples of two steroids: EST, which can be produced by oestrogen and discovered within the urine of expecting mothers; and plus, which will be produced from progesterone and discovered in men’s armpit sweat.
Positron emission tomography (animal) scans revealed which areas of the women’s brains answered to each chemical. Once the heterosexual females smelled AND their brains showed activity when you look at the hypothalamus that is anterior an area of this mind considered to process intimate cues. But EST only produced task into the region that is olfactory of minds, the area that processes smells.
The lesbians, nevertheless, just revealed task within the olfactory area whichever odour they smelled.
The scientists conclude why these “pheromone-like stimuli” create various reactions within the anterior hypothalamus of females of various intimate orientations, and therefore their research supports the concept that the hypothalamus that is anterior a role in intimate choice. (more…)