Learn More
In the perception of distance, depth, and visual motion, a single property is often represented by two or more stimuli. Two instances of such redundant stimulation are discussed. (a) the various stimuli that represent visual motion and (b) the two forms of stimulation by which binocular parallax evokes stereoscopic depth perception. In the case of visual(More)
Three patients with thrombotic thrombocytopenic purpura (TTP) were treated by infusion of normal plasma with dramatic responses. The plasmas collected from these patients during relapse induced in vitro aggregation of washed platelets from both normal donors and the patients during remission. The platelet aggregating factor was not dialyzable or adsorbable(More)
In a previous paper 2 the writer has demonstrated that a distinct localization of sound exists for directions which do not fall into the horizontal plane but lie above or below at varying elevations, in other words that a discrimination of directions with respect to above and below and front and back is possible as well as discrimination with respect to(More)
When the eyes track a moving object, the image of a stationary target shifts on the retina colinearly with the eye movement. A compensation process called position constancy prevents this image shift from causing perceived target motion commensurate with the image shift. The target either appears stationary or seems to move in the direction opposite to the(More)