Your pupils can count ... sort of

[Judi Lynn]

By Yasemin Saplakoglu about 10 hours ago

Pupils expand when there are more objects to look at.

Your pupils might be able to count … sort of. New research suggests a person's pupil size can change based on the number of objects an individual observes in their visual field.

Pupils are holes located in the center of the eye, which change size to regulate the amount of light that enters the eye based on how much is available in the environment. The response of our pupils to light "is one of the most basic sensory responses," the authors wrote in the new study. But pupils have been found to change size based on factors other than light, such as arousal, Live Science previously reported.

The researchers of the new study hypothesized that pupils may also change size based on the number of objects that a person sees in their environment.

Your pupils might be able to count … sort of. New research suggests a person's pupil size can change based on the number of objects an individual observes in their visual field.

It's thought that most species have a certain "number sense," co-author David Burr, a professor at the University of Sydney and the University of Florence, said in the statement. Previous research has suggested that humans may develop a "crude number discrimination" as soon as a few hours after birth, according to the study.

More:
https://www.livescience.com/your-pupils-can-count

[LastDemocratInSC]

1. Always true for a first grade teacher.

[Javaman]

2. since the eyes are an extension of the brain, this comes as no surprise. nt