Interaction of disparity and accommodative vergence

To fixate on a target that moves from far to near, two systems become activated; accommodation and disparity vergence. The goal of this study is to investigate how these systems interact through a new signal-processing algorithm known as independent component analysis. Preliminary data suggest that three underlying neural subcomponents are present where the two components of disparity vergence initiate the movement and the accommodative portion is activated to facilitate the steady state portion of the response.