The effect of hypomagnetic conditions on the size of a person's pupil

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Abstract

Earlier it was reported that hypomagnetic conditions resulting from a 100-fold decrease in geomagnetic field induction affect human cognitive processes, which was evaluated in several computer tests. Exposure in hypomagnetic conditions for 40 minutes led to a statistically significant increase in both the execution time and the number of errors in the tasks. The magnitude of this magnetic effect, averaged over 40 healthy subjects in 80 hour experiments, was about 1.7 percent. This paper describes the results of a study in which the characteristics of the state of the right eye of each subject were recorded on video, while the subject performed cognitive tests. It turned out that under hypomagnetic conditions, the pupil size increases. This effect was calculated based on the processing of a large array of data, including more than a million video frames. The average magnetic effect was about 1.6 percent. Taking into account the heterogeneity, the significance level of the effect is close to significant (0.07, ANOVA, the subjects' factor is random). Magnetic reactions recorded both for different cognitive tests and for pupil size observed simultaneously do not correlate. Approximately equal numbers of testers showed positive and negative effects in each test. Non-specific reactions to the magnetic field appear to be random.

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