Influence of Eye Dominance on the Apparent Centers of Simple Horizontal Lines

Abstract

Ss with right-eye dominance overestimated with either or both eyes the left segment of horizontal lines, regardless of where they fixated the line as they bisected it. The converse occurred with left-dominant Ss, except when these Ss fixated the right end of the line as they bisected it. It was hypothesized that this might be due to the formation of a sharper more accurate representation in the dominant than the non-dominant cortex, with a consequent overestimation of the more diffuse representation relative to the sharper one.