Evidence map›Paper›PMID 27646840›Full record

ArticleArchives of sexual behavior2017

Altered White Matter and Sensory Response to Bodily Sensation in Female-to-Male Transgender Individuals.

Laura K Case, David Brang, Rosalynn Landazuri, Pavitra Viswanathan, Vilayanur S Ramachandran

Abstract read
In one paragraph

Article in Archives of sexual behavior, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

15 citing papers in PubMed.

  1. Article
  2. Pain mechanisms in the transgender individual: a review.Frontiers in pain research (Lausanne, Switzerland) · 2024
    Review
  3. Article
  4. Enhancing Gender.Journal of bioethical inquiry · 2022
    Article
  5. Article
  6. "International journal of sexual health : official journal of the World Association for Sexual Health · 2021
    Article
  7. Article
  8. Biological sex classification with structural MRI data shows increased misclassification in transgender women.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2020
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Testosterone Effects on the Brain in Transgender Men.Cerebral cortex (New York, N.Y. : 1991) · 2018
    Article
  15. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Laura K CaseDepartment of Psychology, University of California, San Diego, CA, USA. laura.case@nih.gov.ORCID http://orcid.org/0000-0003-3730-2451
David BrangDepartment of Psychology, University of California, San Diego, CA, USA.
Rosalynn LandazuriDepartment of Psychology, University of California, San Diego, CA, USA.
Pavitra ViswanathanDepartment of Psychology, University of California, San Diego, CA, USA.
Vilayanur S RamachandranDepartment of Psychology, University of California, San Diego, CA, USA.

Funding

Intramural NIH HHS Z99 AT999999
6 · The paper itself

Abstract

While most people take identification with their body for granted, conditions such as phantom limb pain, alien hand syndrome, and xenomelia suggest that the feeling of bodily congruence is constructed and susceptible to alteration. Individuals with xenomelia typically experience one of their limbs as over-present and aversive, leading to a desire to amputate the limb. Similarly, many transgender individuals describe their untreated sexed body parts as incongruent and aversive, and many experience phantom body parts of the sex they identify with (Ramachandran, 2008). This experience may relate to differences in brain representation of the sexed body part, as suggested in xenomelia (McGeoch et al., 2011). We utilized magnetoencephalography imaging to record brain activity during somatosensory stimulation of the breast-a body part that feels incongruent to most presurgical female-to-male (FtM)-identified transgender individuals-and the hand, a body part that feels congruent. We measured the sensory evoked response in right hemisphere somatosensory and body-related brain areas and found significantly reduced activation in the supramarginal gyrus and secondary somatosensory cortex, but increased activation at the temporal pole for chest sensation in the FtM group (N = 8) relative to non-transgender females (N = 8). In addition, we found increased white matter coherence in the supramarginal gyrus and temporal pole and decreased white matter diffusivity in the anterior insula and temporal pole in the FtM group. These findings suggest that dysphoria related to gender-incongruent body parts in FtM individuals may be tied to differences in neural representation of the body and altered white matter connectivity.

Indexed as

Perceptual DisordersTransgender PersonsWhite MatterAdultFemaleHumansMagnetoencephalographyMaleMiddle AgedYoung AdultBody imageBody representationGender dysphoriaGender identityParietal lobesTransgender

Identifiers

PMID27646840
PMCPMC5357597

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.