People take the shape of the human eye for granted. Changing the shape of the pupils in your own eyes is both a subtle and dramatic way to remind clients that you stand out from the competition. When ...

ITHACA, N.Y. – Cornell University researchers have found the pupil is key to understanding how, and when, the brain forms strong, long-lasting memories. By studying mice equipped with brain electrodes ...

While judging their sensory environments, decision-makers seem to use the uncertainty about their choices to guide adjustments of their subsequent behaviour. One possible source of these behavioural ...

When people are awake, their pupils regularly change in size. Those changes are meaningful, reflecting shifting attention or vigilance, for example. Now, researchers have found in studies of mice that ...

The pupil controls how much light enters the eye, allowing for clear vision. In low light, pupils widen to let in more light, and in bright light, they narrow to prevent too much light from entering.

Instead of the soul, the eyes may actually serve as a window into the mind: A connection may exist between pupil size and certain types of intelligence. Of course, intelligence comes in many forms.