How the female brain responds to genital touch

The exact location of the brain area representing genital touch varies among women. The new research in JNeurosci also found the region was thicker the more frequently the participants engaged in sexual intercourse.

The somatosensory cortex devotes brain space to detecting touch for each part of the body. But the exact location of the female genital field in this map had been controversial. Previous studies produced conflicting results because of less precise mapping methods.

Knop et al. used fMRI to map the exact representation of female genitalia by measuring the brain’s response to a membrane vibrating over the clitoral region. The study was designed to take great care to avoid any discomfort the participants could experience when targeting such a sensitive body region. The somatosensory cortex represented the genitals next to the hips, matching the body’s anatomy. However, the precise location varied from woman to woman. The thickness of the genital field varied with the frequency of sexual intercourse, suggesting the region’s structure alters in relation to its use. These results allow for future studies examining the role of the genital field in healthy sexual function, sexual dysfunction, and especially in the long-term consequences of sexual abuse. Based on this precise mapping, future work can now potentially target the genital representation for treatment of clinical conditions.

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Paper title: Sensory-Tactile Functional Mapping and Use-Associated Structural Variation of the Human Female Genital Representation Field

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About JNeurosci

JNeurosci, the Society for Neuroscience's first journal, was launched in 1981 as a means to communicate the findings of the highest quality neuroscience research to the growing field. Today, the journal remains committed to publishing cutting-edge neuroscience that will have an immediate and lasting scientific impact, while responding to authors' changing publishing needs, representing breadth of the field and diversity in authorship.

About The Society for Neuroscience

The Society for Neuroscience is the world's largest organization of scientists and physicians devoted to understanding the brain and nervous system. The nonprofit organization, founded in 1969, now has nearly 37,000 members in more than 90 countries and over 130 chapters worldwide.