Neuroscience in transgender people: an update

Author:

Kiyar Meltem1,Collet Sarah2,T’Sjoen Guy2,Mueller Sven C.3

Affiliation:

1. Department of Experimental Clinical and Health Psychology , Ghent University , Ghent , Belgium

2. Department of Endocrinology and Center for Sexology and Gender , Ghent University Hospital , Ghent , Belgium

3. Department of Experimental Clinical and Health Psychology , Ghent University , Henri Dunantlaan 2, 9000 , Ghent , Belgium

Abstract

Abstract Transgender persons identify with a gender different from the one they were assigned at birth. Although describing oneself as transgender is not a new phenomenon, media attention has lately been increasing exponentially, thanks to progressive changes in laws and change in societal attitudes. These changes also allow more people nowadays to (openly) identify as transgender and/or seek gender-affirming treatment. However, simultaneously, not much is presently understood about the underlying neurobiology, and specifically the brain structure and brain function of transgender persons. One major question in neuroimaging and neuroscience has been to determine whether, at the brain level, transgender people resemble more their gender identity, their sex assigned at birth, or have a unique neural profile. Although the evidence is presently inconsistent, it suggests that while the brain structure, at least before hormonal treatment, is more similar to sex assigned at birth, it may shift with hormonal treatment. By contrast, on “sex-stereotypical tasks,” brain function may already be more similar to gender identity in transgender persons, also before receiving gender-affirming hormone treatment. However, studies continue to be limited by small sample sizes and new initiatives are needed to further elucidate the neurobiology of a ‘brain gender’ (sex-dimorphic change according to one’s gender).

Funder

Bijzonder Onderzoeksfonds

Publisher

Walter de Gruyter GmbH

Subject

Neurology (clinical),Neurology

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