The S-cones make up only 8–12 percent of all cones in the retina and are almost completely absent in the absolute center of ...

What does red look like to you? Philosophers have argued about this for centuries. Maybe my red is your green. Maybe we live ...

Pupil size in people with synesthesia changed depending on how bright or dark the perceived colors were.

* Purple is a non-spectral color created by the brain from red and blue signals * Individual differences in eyes and brain make each person see colors uniquely * All colors we //perceive, including ...

The colors we see may get increasingly dull as we get older, scientists have found. The pupils of younger people's eyes react differently to bright colors than those of older folk, a new paper in the ...

Perceiving something – anything – in your surroundings is to become aware of what your senses are detecting. Today, Columbia University neuroscientists identify, for the first time, brain-cell ...