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Men and women see differently

17.09.2012

A group of researchers from the City University of New York published a report in the online open access journal Biology of Sex Differences that, according to the results of their new study, men and women see certain objects differently, because the way their brain processes optical information differs. . Scientists claim that women are better at distinguishing colors, while men's eyes are more sensitive to small details and rapidly changing stimuli.

Actually, this was to be expected, since people in the cerebral cortex, especially in its visual center, contain large amounts of androgens - receptors for male sex hormones - which, during the period of embryonic development, are involved, among other things, in the formation of neurons. Thus, it turns out that the male brain contains 25% more neurons than the female.

The scientists decided to see what this leads to in terms of visual perception, and for this purpose they examined a large group of men and women aged 16 and over. The only requirement that they made to the volunteers was normal color perception and excellent vision (one) (correction was allowed with glasses or optical lenses).

To begin with, volunteers were shown color pictures and asked to identify the colors. It turned out that men's color perception is somewhat shifted compared to women - in order for them to name the same color as women, they had to slightly increase its wavelength. The man was also worse at distinguishing colors in the center of the optical spectrum.

Further, the pictures became more complicated - scientists began to check the contrast of vision by presenting to the subjects sets of dark and light stripes that are closer to each other, then further away and, in addition, change color during viewing. The subjects had difficulty distinguishing these bands and their color change if they were too close to each other, but the advantage in this case was for men - they did it better than women, and more clearly captured the moment of color change.

Thus, the state of the visual system depends on gender in the same way as the systems of hearing and smell. Professor Israel Abramov, who led this study, believes that testosterone levels during embryonic development play a major role in visual differences.

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