Covering your left eye with your left hand has the potential to help you feel less stressed because it can calm your brain. Your brain has two sides: the left side and the right side. The right side ...

Among the examinations is a test involving a stereoscope through which each eye looks at a series of typed numbers or digits. Ordinarily the subject will make a choice between the left or right eye.

Those signals are processed in stacks of cells called ocular dominance columns, a checkerboard pattern of connections alternating between the left and right eye. A slight discrepancy in the ...