After decades of brain research, scientists still aren't sure whether most people see the same way, more or less -- especially with colors. Is what I call red also red for you? Or could my red be your ...

* 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 ...

We see color because photoreceptor cones in our eyes detect light waves corresponding to red, green, and blue, while dimness or brightness is detected by photoreceptor rods. Many non-mammalian ...

The face is an important feature for identifying individuals, and as suggested by the expression, “kaoiro wo ukagau” (Look at the complexion; i.e. be sensitive to someone’s mood, read someone’s ...