The size of your pupils varies throughout the day, but most people’s pupils fall within a particular size range. We’ll look at when and why your pupils change size. First, the range of ...

Visual illusions of motion are a ... Every time you move your eyes or blink, your pupils "reset", leading to small changes in their size over the course of a second or two. In their new paper ...

Everyone is familiar with their pupil size varying in response to different ... says the findings demonstrate how deeply connected primary visual perception is to numerical information.

but similar to the pupil response to mental effort or arousal. The size of these fluctuations is theoretically large enough to influence our visual perception. It may therefore be that our vision ...

On the opposite end of the spectrum, people with hyperphantasia can imagine extremely vivid visual images in their mind's eye. Source: GoodIdeas/Shutterstock Pupil Size Changes When Non-Aphantasic ...

The results were obtained by measuring the pupil size of 26 volunteers as they performed a visual choice-based task designed to mimic the kinds of challenging perceptual decisions that are ...