The visual argument

Muslim writers, this author included, have sometimes reached for neuroscience to justify the head-cover. The move deserves scrutiny, because it is weaker than the case it is meant to support.

What the research does establish

The finding is real and it replicates. Using fMRI, researchers at Emory found that the amygdala and hypothalamus activate more strongly in men than in women when both view identical sexual images, and that this held even when the women reported greater subjective arousal. Men are, on average, more visually responsive. That much is solid.

What it does not establish

Two claims have been built on top of it that the research does not carry. The first is that the female brain plays no role in arousal; the same study found men and women activating similar patterns across multiple regions, including the reward circuitry. The second draws on reporting about brain activity during orgasm, which is a different phenomenon from response to visual stimuli and cannot be transferred across.

Anyone defending the head-cover on those two claims has staked it on assertions that a competent critic will dismantle in an afternoon.

Why the argument should not be made this way at all

There is a deeper problem, and it is a problem of the religion’s own teaching. An argument that grounds covering in male biology implies that men cannot govern their eyes and that women must therefore compensate. Qur’an 24:30 says the opposite, and it says it first: men are to lower their gaze and guard their chastity. The obligation is placed on the man’s restraint. A defence that relieves him of it has surrendered the verse in order to win the argument.

The command stands on the text and on the shared standard of modesty it establishes. It does not need a brain scan, and it should not be hostage to the next one.