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Sexual cues alter working memory performance and brain processing in men with compulsive sexual behavior.

C Sinke1, J Engel1, M Veit1

  • 1Hannover Medical School, Division of Clinical Psychology & Sexual Medicine, Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover, Germany.

Neuroimage. Clinical
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Summary

Compulsive sexual behavior is linked to altered brain activity when viewing pornography. Patients showed impaired working memory and enhanced memory for pornographic images, suggesting increased relevance.

Keywords:
Compulsive sexual behaviorWorking memorydistractionfMRT

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Area of Science:

  • Neuroscience
  • Psychology
  • Addiction Research

Background:

  • Pornography use is widespread and debated, but its neural impact on attention and memory remains unclear.
  • Understanding these effects is crucial, especially in individuals with compulsive sexual behavior (CSB).

Purpose of the Study:

  • To investigate the neural mechanisms underlying the effects of pornographic stimuli on working memory in individuals with CSB.
  • To compare brain activity and behavioral responses between patients with CSB and healthy controls when processing neutral versus pornographic images.

Main Methods:

  • Functional magnetic resonance imaging (fMRI) was used to monitor brain activity.
  • A letter n-back task with neutral or pornographic background images was administered to 38 patients with CSB and 31 healthy controls.
  • A surprise recognition task assessed memory performance for the presented images.

Main Results:

  • Patients with CSB were behaviorally slowed by pornographic material, correlating with recent consumption and increased lingual gyrus activation.
  • The lingual gyrus showed heightened functional connectivity with the insula in patients during pornographic stimulus processing.
  • Healthy controls exhibited faster responses to pornographic images only under high cognitive load, and patients demonstrated superior memory recall for pornographic content.

Conclusions:

  • Pornographic stimuli differentially affect working memory and neural processing in individuals with CSB compared to healthy controls.
  • Findings support the incentive salience theory of addiction, highlighting the role of the insula and salience network in CSB and responses to pornography.
  • Recent pornography consumption influences neural activity in the lingual gyrus, underscoring the material's heightened relevance in this patient group.