The saying “The eyes of fear are large” has found scientific confirmation, although in a slightly modified form. Psychologists investigated the relationship between vision and fear in humans
Scientists from the University of Nijmegen (the Netherlands) recruited a group of volunteers aged 18 to 30 years and divided the participants into two subgroups, one of which was subjected to external stress. During the experiment, all participants were shown red and green dots on the monitor screen. The 34 people who were included in the experimental group, after turning on the red dot, most often received a weak electrical discharge, while demonstrating the green dot the discharge did not turn on. The control group respondents did not receive any electric shock points when viewing both the red and the green points.
Immediately after turning on the point on the screen, participants were shown two squares with lines, and the respondents had to establish in which direction from the point these lines were moving.
Scientists noted that those participants who were under stress from waiting for an electrical discharge, vision at the time of an electric shock fell. These respondents managed to better consider the squares, the content of rare lines. Experts were able to conclude that stress does not impair vision, but changes visual perception. A person perceives less detailed objects much better.
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