Differenc Gay Bras - Gee Freeman

Contents:

• BRAS OF GAY PEOPLE REMBLE THOSE OF STRAIGHT PEOPLE OF OPPOSE SEX
• GAY BRAS STCTURED LIKE THOSE OF THE OPPOSE SEX
• STUDY SAYS BRAS OF GAY MEN AND WOMEN ARE SIAR
• BRAS DIFFERENT GAY, STRAIGHT PEOPLE
• WHAT THE GAY BRA LOOKS LIKE
• EVINCE: A CASE FOR CREATN AND DIFFERENC GAY BRAS

BRAS OF GAY PEOPLE REMBLE THOSE OF STRAIGHT PEOPLE OF OPPOSE SEX

For stance, early studi reported an almost two-fold volumetric crease of the suprachiasmatic nucls of the hypothalam16 but twice smaller volum of the third terstial nucls of the anterr hypothalam (INAH-3) homosexual (HoM) relative to heterosexual men (HeM) and no volumetric differenc the INAH-3 between heterosexual women (HeW) and HoM17. Comparg the regnal rtil thickns and subrtil volum of heterosexual and homosexual mal revealed smaller thalam volum and thner right orboontal and right visual rtic HoM20. In another voxel-based morphometry (VBM) study on sexual orientatn, ls gray matter nsy was observed the ventral cerebellum, the left ventral premotor rtex, and the temporo-basal rtex homosexual relative to heterosexual women22.

Furthermore, homosexualy seems to be associated wh ls distct cerebral sexual together, although extant fdgs suggt that human sexual orientatn is associated wh bra morphology, the heterogeneo and limed number of studi preclus a thorough unrstandg of the shared and distct nral signatur of sexual orientatn men and women. MethodsParticipantsMRI data of 37 men (21 homosexual men = HoM; 16 heterosexual men = HeM) and 37 women (19 homosexual women = HoW; 18 heterosexual women = HeW) entered the analys (see Supplementary Table 1 for sample mographics; N = 74). Participants were reced through universy bullet boards, Lbian, Gay, Bisexual, Transgenr, and Queer or Qutng + (LGBTQ +) anizatns Aachen, Cologne and surroundg areas, and by word-of-mouth remendatn.

All participants were asked to dite their sexual orientatn at the time of measurement g a 1 to 4 sle rangg om (1) exclively homosexual, (2) predomantly homosexual, (3) bisexual, or (4) heterosexual. Altogether, 19 homosexual men and 15 homosexual women intified as exclively homosexual, while two homosexual men and four homosexual women intified as predomantly homosexual. 3D T1-weighted MRI sns were reoriented to the termissural plane, rrected for field tensy homogenei, and spatially normalized onto MNI standard space.

GAY BRAS STCTURED LIKE THOSE OF THE OPPOSE SEX

A homogeney check intified no outliers, th the GM volum of all 74 participants (21 HoM, 16 HeM, 19 HoW, 18 HeW) were clud subsequent analys: sexual orientatnFirst, whole-bra analys were performed g full factorial signs to pare GMV wh rpect to sexual orientatn (whole sample and per blogil sex, i. VBM ROI gray matter analys were performed on clters emergg om the heterosexual > homosexual and the reverse ntrast and masculy and femy sr om the BSRI qutnnaire. The rults suggt that HoM and HoW have a signifintly more externally oriented thkg style than HeM and HeW, rultg overall higher alexhymia levels for homosexual vs.

05 FWE-rrected at voxel level) revealed creased GMV the thalam, postcentral gys, middle occipal gys, precentral gys, middle temporal gys, and the cerebellum heterosexual pared to homosexual participants (see Fig. 1B, Table 2) 1Whole-bra v-FWE rrected VBM analys for the entire size imageTable 1 Clter list for ntrast heterosexual > homosexual all group (thrhold p < 0.

HeM heterosexual men; HoM homosexual men; HeW heterosexual women; HoW homosexual size imageTable 3 Clter list for ntrast heterosexual mal > homosexual mal (thrhold p < 0.

STUDY SAYS BRAS OF GAY MEN AND WOMEN ARE SIAR

05, FDR-rrected for multiple parisons) were intified for each clter for hetero- vers homosexual dividuals across the whole sample (irrpective of blogil sex) and men and women separately (sex-specific). Clter 1: Thalam (MNI 9, − 21, 9)The heterosexual > homosexual orientatn analysis (irrpective of blogil sex; whole sample) related this thalam seed to actn executn, perceptn, somthis, pa, and to fger tappg, pa monorg and discrimatn paradigms. Clter 2: Pre- and postcentral gys (MNI − 41, − 18, 66)Heterosexualy > homosexualy (whole-sample) analys related the pre-/post-central gys to actn executn, speech, perceptn, and somthis functnal domas, and to paradigms cludg fger tappg, drawg, flexn/extensn, and reward.

BRAS DIFFERENT GAY, STRAIGHT PEOPLE

DiscsnIn this study we vtigated rti-subrtil gray matter volume differenc homosexual and heterosexual dividuals to addrs the sparse and heterogeneo fdgs on morphologil bra differenc associated wh sexual orientatn. In le wh our hypoth, we found that, relative to homosexual participants, heterosexual dividuals had signifintly higher GMV the thalam and precentral gys.

Breakg the rults down by blogil sex, highlighted that hetero- vers homosexual women (HeW > HoW) showed larger GMV the precentral gys, while the reverse ntrast (HoW > HeW) revealed larger GMV the putamen. In heterosexual and homosexual dividuals, the meddorsal thalam was more activated by fac of the preferred sex relative to fac of a ls sired sex, pennt of the observers’ blogil sex or sexual orientatn45.

While ngently suggtg that hypothalamic activatn has downstream effects on visual perceptn likely impactg the selectn of sexual partners46, prev fdgs also support a role of the thalam signalg sexual reward47 and aroal among homosexual and heterosexual thalam has numero reciprol rti-thalamic nnectns wh reward and sensory-motor regns49.

WHAT THE GAY BRA LOOKS LIKE

Neverthels, our rults preclu the possibily that the morphologil differenc between homo- and heterosexual dividuals reflect atypil cerebral sex studi showed that the precentral gys is implited the regulatn of emotn and self-evaluatn51, cludg the perceptn of body image52. Homosexual men showed creased actnal amplu of low-equency fluctuatn (fALFF) the left postcentral gys54 pared to heterosexual men, whereas both heterosexual and homosexual dividuals exhibed higher activy of the post-central gys durg subjective aroal55. Sports engagement) or are at least partially ntgent on how much effort dividuals vt to obta putamen emerged as the only regn wh creased gray matter volume homosexual vers heterosexual dividuals but the difference was driven by homosexual women.

Although, to the bt of our knowledge, there is no evince for an associatn between sexual activy and bra morphologil phenotyp, future studi should asss markers of sexual activy to exame potential effects of genr atypily wh homosexual and heterosexual groups. For at least 20 years, nroscientists have been tryg to disver whether there are specific anatomil differenc between heterosexual and homosexual men and women. An early post-mortem study found that a small regn of the anterr hypothalam was smaller homosexual men than heterosexual men, and no different om heterosexual women.

EVINCE: A CASE FOR CREATN AND DIFFERENC GAY BRAS

Overall, the specific bra regns homosexual mal tend to be siar to heterosexual women (more female‐typil), while the same bra regns homosexual women tend to be siar to heterosexual men (more male‐typil). Many of the early imagg studi were limed by small sample siz and did not clu female, both heterosexual and homosexual, parison groups. Essentially, the differenc bra anatomy that distguish heterosexual mal and femal were prent, however they were ls pronounced when parg male and female homosexuals.

Geic factors that are associated wh variatns some rtil stctur showed oppose effects on rtil volume male vers female homosexuals who reported same-sex sexual behavrs. In other words, the bra regns of tert this study beme larger homosexual femal and smaller homosexual mal, as pared to their heterosexual unterparts.