Summary:
A neurocognitive study from the University of Exeter shows that a brief, non-invasive brain stimulation can temporarily remove a perceptual marker associated with the sexual objectification of women. In a randomized, double-blind experiment with 76 participants, researchers applied transcranial direct current stimulation (tDCS) and restored the classic “inversion effect” for sexualized female images. The stimulation improved recognition of upright sexualized female bodies, eliminating the visual processing disparity between sexualized male and female images.
Key Facts:
- Perceptual objectification marker: Normally, faces and bodies are processed configurally—people are recognized much better when upright than when inverted—while objects show little inversion effect. In baseline tests, this upright advantage is reduced for sexualized images of women, indicating piecemeal, object-like perceptual processing.
- Brain stimulation equalization: Ten minutes of mild tDCS applied across prefrontal scalp regions increased recognition of upright sexualized female images, restoring a full inversion effect and removing the processing gap between sexualized women and men.
- Targeting the observer’s perception: Instead of changing the images or instructing observers to think differently, this study directly modulated neural processing in the viewer, demonstrating that objectification biases reflect how visual inputs are encoded in the brain.
Source: University of Exeter
Overview: Sexual objectification—treating a person as a set of body parts or a body to be used rather than as a whole person—is widespread across advertising, entertainment, and social media. It is linked with higher tolerance for sexual harassment, systemic gender bias, and negative mental health outcomes such as body shame, anxiety, and depression among women. Cognitive research shows that objectification alters perception at an early, automatic stage, changing how visual information about people is encoded.
Perceptual research has long used the inversion effect to distinguish holistic from piecemeal processing. Faces and whole bodies produce a strong inversion effect—recognition is substantially better when images are upright—whereas most inanimate objects do not. Prior laboratory studies consistently report that this upright recognition advantage is reduced for sexualized images of women, but not for comparable images of men, suggesting that sexualized women are sometimes encoded more like objects than people.
The new study, led by Professor Ciro Civile and published in Social Neuroscience, tested whether that perceptual distortion could be modulated by a mild electrical current applied to the scalp—transcranial direct current stimulation (tDCS).
Study design and methods
Seventy-six university students (54 female, 22 male) took part in a double-blind, sham-controlled experiment. Participants completed a recognition memory task that involved studying photographs of male and female models in underwear posed in sexualized stances, shown upright and inverted. Later, they identified previously seen models among new distractors.
During the task, half the participants received 10 minutes of anodal tDCS (1.5 mA) delivered between electrodes placed over the left forehead and above the right eyebrow. The control group received a 30-second sham stimulation that mimicked the initial tingling sensation but did not produce sustained neuromodulation.
Results: restoring holistic processing
Participants in the sham condition replicated the typical bias: a strong inversion effect for sexualized men (better recognition upright than inverted) but a markedly reduced inversion effect for sexualized women, consistent with fragmented, object-like processing.
Those who received active tDCS showed a specific and measurable change:
- Improved upright recognition: tDCS increased accuracy for upright sexualized images of women.
- Elimination of the processing gap: The statistical difference in inversion effect between sexualized male and female images disappeared under active stimulation, indicating restored configural, human-like processing for women.
- Specificity: The stimulation did not reduce the inversion effect for male images; instead, it selectively elevated the processing of sexualized female images.
Professor Civile emphasized that while the findings show perceptual processing can be changed temporarily, this is a laboratory result and not a treatment for sexism: the experiment did not measure attitudes or behavior, only early visual encoding. Still, the study offers a novel method for probing how objectification arises in perception.
Implications and next steps
Previous efforts to reduce visual objectification focused on altering images (for example, blurring body parts) or changing viewers’ mindsets through humanizing information or social priming. This study differs by modulating the viewer’s neural processing directly while keeping stimuli identical, suggesting the bias lies in perception rather than only in the images.
The stimulation protocol builds on prior work from the same laboratory that reduced automated recognition biases such as the other-race effect and own-age bias. Unlike those studies, which often diminished in-group advantages, this intervention improved perceptual processing for sexualized women, bringing recognition into line with holistic human perception.
Because testing occurred during and immediately after stimulation, future research should determine how long the perceptual change lasts and whether modifying early visual pathways can influence real-world social attitudes, implicit bias, or behavior.
Editorial notes
- This article was edited by a Neuroscience News editor.
- The journal paper was reviewed in full and supplemented with context from staff.
About this neurotech research:
- Media contact: Louise Vennells
- Source: University of Exeter
- Image credit: Image credited to Neuroscience News
- Original research: Social Neuroscience (Oct 1, 2026). “Disrupting objectification: transcranial Direct Current Stimulation (tDCS) enhances the inversion effect toward sexualized women.” Authors: Ciro Civile and Arwen Stephens.
- DOI: 10.1080/17470919.2026.2751696
Abstract
Disrupting objectification: transcranial Direct Current Stimulation (tDCS) enhances the inversion effect toward sexualized women
Sexual objectification is linked to perceiving women in an object-like manner, often indexed by a reduced inversion effect for sexualized women relative to men. Prior work showed this index can be changed through social interventions; here the question was whether neuromodulation could also modulate it.
In a double-blind, between-subjects design, participants (N = 76) completed a recognition task with upright and inverted sexualized targets while receiving either anodal tDCS (10 minutes, 1.5 mA, anode at Fp3) or sham stimulation (30 seconds, 1.5 mA). The sham group showed a reduced inversion effect for sexualized women relative to men—interpreted as perceptual objectification—whereas the anodal tDCS group did not. The inversion effect for sexualized women increased under tDCS and did not differ significantly from that for men, accompanied by improved recognition of upright sexualized women. These results provide initial evidence that perceptual objectification, as measured by the inversion effect, can be modulated through non-invasive brain stimulation.
