Researchers found that the decisions person is accompanied by a narrowing of the pupils. Article scientific workers appears in the journal Proceedings of the National Academy of Sciences. Her short summary lead to RIA Novosti.

In the scale of research scientists showed volunteers videos, inside some of which were sewn distorted images. After viewing the video volunteers promised to answer the question: did they illustration?

In the result, the researchers found that the pupils volunteers are narrowed during decision-making. The fact narrowing not depends on correct decision. However, in case if the subject was undecided, narrowing occurred.

Scientists also note that in General the pupils narrowed stronger, if the person answered that the image was when it was not, than when he missed. The first data of scientists published in the journal Perception in 2013. Then participated in the study 4 volunteers, each of which otsmatrivat 2.4 thousand videos.

Change the pupil diameter is considered, according to experts in psychology, the main marker of human activity. In early August 2014, the company Google has patented tracking technology view in Google Glass. Dilated pupils in the technology is seen as a sign sensual resonance on advertising.
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