Abstract
The influence of natural extralow frequency perturbations of atmospheric pressure (EPP), simulated in a frequency range below 0.1 Hz, on a person’s capability of active attention and concentration was studied. As has been established in experiments with a group of ten volunteers, the system of attention reacts to this insensible factor. Irregular chaotic EPP complicated attention concentration and disorganized perceptual processing of information, caused psychophysiological strain, and reduced the resistance of the nervous system to an information load. On the contrary, regular EPP approximating the sinusoidal wave with a period from 45 to 90 s, raised the level of attention and promoted long steady concentration. Thus, task performance with an optimum level of information load occurred with smaller mental and physiological strain along with reduction of the heart rate and augmentation of duration of voluntary breath holding.
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