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Electroencephalographic laterality changes during human sexual orgasm

H D Cohen, R C Rosen, L Goldstein

    Archives of Sexual Behavior
    |May 1, 1976
    PubMed
    Summary
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    This study shows significant changes in brain activity during sexual orgasm. Electroencephalography (EEG) recordings revealed altered brain laterality in participants experiencing climax.

    Area of Science:

    • Neuroscience
    • Human Sexuality Research
    • Psychophysiology

    Background:

    • Previous research on sexual response primarily focused on physiological indicators like blood flow and muscle tension.
    • The role of brain activity, specifically electroencephalography (EEG) patterns, during sexual climax remains less explored.

    Purpose of the Study:

    • To investigate brain phenomena, specifically EEG laterality, during the experience of sexual orgasm.
    • To determine if measurable changes in brain activity occur during climax and if these changes exhibit lateralization.

    Main Methods:

    • Recorded left and right parietal electroencephalograms (EEGs) from seven subjects during self-induced sexual climax.
    • Quantified EEG data using continuous cumulated measurements of integrated EEG areas over 1-second epochs.

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  • Conducted controlled replications with two subjects to rule out artifacts from movement or self-stimulation.

    • Main Results:

    • A statistically significant change in brain laterality was observed in eight out of twelve experiments.
    • Controlled replications confirmed that the observed EEG changes were not due to artifacts from hand movements or gross body movements.
    • Demonstrated a significant brain phenomenon associated with sexual orgasm.

    Conclusions:

    • Sexual orgasm is associated with significant changes in brain activity, specifically in EEG laterality.
    • These findings highlight the importance of considering central nervous system activity in understanding the psychophysiology of sexual response.
    • This study provides novel evidence for the role of brain phenomena in the human sexual climax experience.