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Brain correlates of subjective reality of physically and psychologically induced pain.

ABSTRACT: Meaningful behavior requires successful differentiation of events surfacing from one's mind from those arising from the external world. Such judgements may be especially demanding during pain because of the strong contribution from psychological factors to this experience. It is unknown how the subjective reality of pain (SRP) is constructed in the human brain, and neuronal mechanisms of the subjective reality are poorly understood in general. To address these questions, 14 suggestion-prone healthy subjects rated reality of pain that was induced either by laser pulses to the skin or by hypnotic suggestion during functional MRI. Both pain states were associated with activation of the brain's pain circuitry. During laser stimulation, the sensory parts of this circuitry were activated more strongly, and their activation strengths correlated positively with the SRP. During suggestion-induced pain, the reality estimates were lower and correlated positively with activation strengths in the rostral and perigenual anterior cingulate cortex and in the pericingulate regions of the medial prefrontal cortex; a similar trend was evident during laser-induced pain. These findings support the view that information about sensory-discriminative characteristics of pain contributes to the SRP. Differences in such information between physically and psychologically induced pain, however, could be quantitative rather than qualitative and therefore insufficient for judging the reality of pain without knowledge about the source of this information. The medial prefrontal cortex is a likely area to contribute to such source monitoring.

SUBMITTER: Raij TT

PROVIDER: S-EPMC548310 | biostudies-literature | 2005 Feb

REPOSITORIES: biostudies-literature

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Brain correlates of subjective reality of physically and psychologically induced pain.

Raij Tuukka T TT Numminen Jussi J Närvänen Sakari S Hiltunen Jaana J Hari Riitta R

Proceedings of the National Academy of Sciences of the United States of America 20050131 6

Meaningful behavior requires successful differentiation of events surfacing from one's mind from those arising from the external world. Such judgements may be especially demanding during pain because of the strong contribution from psychological factors to this experience. It is unknown how the subjective reality of pain (SRP) is constructed in the human brain, and neuronal mechanisms of the subjective reality are poorly understood in general. To address these questions, 14 suggestion-prone heal ...[more]

PMID: 15684052

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Project description:INTRODUCTION:Sexual pain is common among women but little is known about associations with exercise and physical activity. AIM:To determine the prevalence of sexual pain among physically active women and to evaluate cycling and other potential risk factors. METHODS:This is a secondary data analysis of a study on the urinary and sexual wellness of physically active women recruited through sporting clubs and targeted social media advertising. We used multivariable logistic regression to assess the role of cycling and exercise in reporting any, frequent, or severe sexual pain, controlling for demographic, relationship, and health risk factors. MAIN OUTCOME MEASURE:Sexual pain, including frequency and severity, was measured using the Female Sexual Function Index. RESULTS:A total of 2,039 women were included, with 1,097 (54%) reporting any level of sexual pain, 364 (18%) experiencing frequent pain, and 378 (19%) reporting severe pain. Less than 5% of women reported diabetes or hypertension, and the cohort had a median body mass index of 23.3 (interquartile range 21.4-25.7). Increasing age and body mass index were protective against any sexual pain, as was cycling (odds ratio [OR] 0.73 [95% CI 0.59-0.90]). Participants who reported being "moderately satisfied" (OR 0.53 [95% CI 0.31-0.91]) or "very satisfied" (OR 0.33 [95% CI 0.19-0.56]) with their emotional closeness to a sexual partner had decreased odds of any sexual pain. CONCLUSION:Experiencing any sexual pain is common in physically active women, with a prevalence of over 50%; however, weekly energy expenditure from exercise was not associated with sexual pain. Cycling participation and higher levels of emotional closeness and intimacy were associated with less pain. Patients between the ages of 18 and 30 years who were normal or underweight incurred the highest risk of sexual pain. Fergus KB, Cohen AJ, Cedars BE, et al. Risk Factors for Sexual Pain Among Physically Active Women. Sex Med 2020;8:501-509.

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Brain correlates of subjective reality of physically and psychologically induced pain.

Publications

Brain correlates of subjective reality of physically and psychologically induced pain.

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