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Record W4410954725 · doi:10.1093/sexmed/qfaf037

Anal sex practices and rectal erogenous zone maps among men and women of diverse sexual orientations: an anatomic-map based questionnaire study

2025· article· en· W4410954725 on OpenAlex
Michael Zaliznyak, Andrew Neil Walton, Jenna Stelmar, Dylan Isaacson, Thomas W. Gaither, Gail Knudson, Maurice M. Garcia

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

VenueSexual Medicine · 2025
Typearticle
Languageen
FieldMedicine
TopicSexual function and dysfunction studies
Canadian institutionsUniversity of British Columbia
Fundersnot available
KeywordsOrgasmSexual functionRectumDemographicsMedicinePopulationPleasureDemographyPsychologyGynecologyClinical psychologySexual dysfunctionInternal medicine

Abstract

fetched live from OpenAlex

Background: There is limited research about the prevalence of receptive anal intercourse (RAI), erogeneity and sexual pleasure within the zones of the rectum. Aim: We describe the experience of RAI within a large and diverse population in an online convenience survey, to map zones of erogenous sensation within the rectum, and to assess orgasm function among individuals who practice RAI. Methods: Adult subjects were recruited from an online survey platform and were queried about their history of RAI. Those who endorsed RAI were shown illustrations of the rectum divided into four non-overlapping anatomic regions. Subjects designated regions where they experienced pleasure when touched during RAI. Subjects were also asked about their ability to achieve orgasm from RAI alone or if they required co-stimulation of additional regions. Demographics were collected, and differences were analyzed based on gender, age, and sexual orientation identity. Outcomes: Outcomes include mapped erogeneity of the rectum among men and women and self-reported experiences with RAI, including orgasm function related to RAI among cisgender adults. Results: < .05). Gay men and women were more likely to have participated in RAI. The superficial anterior rectum was the most frequently selected region by both men and women as a site of pleasure when touched during RAI. Clinical Implications: The results of this study will highlight preferred zones of erogeneity in the rectum, which could be impacted by surgeries or pathology in these areas. Strengths and Limitations: This study captured a comprehensive assessment of erogenous sensation within the rectum among a large sample. Limitations include the use of a online subjects for data collection, which can result in both response and selection bias. Conclusion: Our findings show that RAI is practiced by many adults across ages, gender, and sexual orientation identities. Both men and women report pleasure from various areas within the rectum, primarily the superficial regions of the rectum. These findings may prove helpful in elucidating practices of RAI. Additionally, understanding erogeneity in the rectum may allow providers to better predict changes due to pathology and treatments of or surrounding these areas.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.001
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: Observational
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.449
Threshold uncertainty score0.838

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0010.001
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0010.000
Bibliometrics0.0000.001
Science and technology studies0.0000.001
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.032
GPT teacher head0.347
Teacher spread0.314 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it