Can human stereopsis improve by making the eyes optically perfect?

Stereopsis outweighs gravity in the control of the eyes.

The eyes are controlled by multiple brain circuits, some phylogenetically old and some new, whose aims may conflict. Old otolith reflexes counterroll the eyes when the head tilts relative to gravity. Newer vergence mechanisms coordinate the eyes to aid stereoptic vision. We show that counterroll hinders stereopsis, weakly when you look into the distance but strongly when you look near. The reso...

Can Intuitive Decision Making Improve Homeland Security?

Judgmental processes involved in risk perception and decision making have traditionally been conceptualized as cognitive in nature, being based upon a rational and deliberate evaluation of the situation at hand. Conversely, a sampling of research from diverse literatures suggests that intuitive decision-making may offer an alternative (or possibly complementary) behavioral strategy in some situ...

How can we improve amniocentesis decision-making?

The decision to have an amniocentesis entails a trade-off between a risk of procedure associated miscarriage and the benefit of obtaining diagnostic information to identify Down syndrome or other chromosomal aneuploidy. Ideally, this trade-off is informed by first and second trimester pre-natal screening tests, such that women with low risk screening test results are not encouraged to have an a...

Stereopsis due to luminance differences in the two eyes

A local region in an image is seen as slanted when the two eyes are shown different luminance values in that region. The steepness of the slant depends upon the size of the region and the difference in the luminance values in the two eyes. Three examples where this phenomenon influences depth perception are given: (1) stereopsis without corresponding binocular luminance edges is shown to be a l...

Can the Use of a DSS Improve Decision Making?