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Pupil reveals: he doing it or doing it does not it work?

Feb 2nd 2014 at 10:51 PM

Pupil reveals: he doing it or doing it does not it work?

Eye the eyes are the mirror of the soul, wrote Leonardo Ad Vinci centuries ago. Eyes reveal a lot about what goes on in our brains. Thus, the pupils are dilated when it gets dark and when a stressful situation arises. Thanks neuroscientists at the University of Amsterdam a factoid can be added to this list. Dilation of your pupil reveals the outcome of your decisions.

During the study, subjects performed a computer task in which they had to indicate whether they saw a particular image in dynamic noise or not. With the push of a button The neuroscientists made the decision process took longer to make. Distinguish between task and decision process Participants saw the picture, they did not pressed the right button so than the left. Meanwhile, scientists recorded the pupil size of the subjects.


We ... do not just listen with our ears, but also with our eyes ?

With the test, scientists were able to show that no pupil dilation during the decision takes place, but during the collection of evidence. The degree of dilation betrays the feeling of the decision about the upcoming choice. Remarkably, the largest pupil dilation occurred in the conservative subjects, or the people who wait longer before they make a purchase.






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