The increased contrast between the brightness of the image on the screen and the lighting in the room leads to rapid eye fatigue, experts at the Renssel Institute of Technology in New York believe,.

Scientists conducted an experiment in which volunteers were shown two motion pictures by the hour. The first group of volunteers watched the film on a flat television screen, located on the background of a well-lit wall, the second group was shown in a room without additional illumination. To view the second film, the groups of participants were swapped.

During the break and after the second viewing, volunteers had to undergo tests in which the rate of response to visual stimuli was assessed. During the performance of the tasks, the participants were brain scans.

As a result, the researchers found that when people watch movies in the absence of lighting in the room, they are slowing the reaction during subsequent assignments. Scientists also recorded a small but measurable increase in the interval between the appearance of the stimulus and the reactive stimulation of the visual centers of the brain of the participants who watched the film in the dark.

As a result of the oral interrogation, the participants of the experiment, who watched the film in the dark, often complained of visual tension, fatigue and drowsiness. According to the researcher Marianna Figuero, this project has made it possible to establish a connection between subjective feelings of discomfort and visual tension and specific physiological responses that can be measured accurately.

Medicinform. Net.