The nature of sensory compensation during fusional response.

Abstract Simultaneous objective (based on binocular eye movement recording) and subjective (nonius line displacement) measurements of horizontal and vertical fusional response were carried out in order to examine the nature of sensory fusional compensation. It was found that the presence of sensory compensation in one retinal region affects the sensory representations of neighboring regions. Unlike motor compensation, however, sensory compensation affects fusible and nonfusible contours differently. The implication of these results is examined for the reliability of subjective determinants of binocular status.