The New Jersey Institute of Technology's
Electronic Theses & Dissertations Project

Title:	Interaction of disparity and accommodative vergence
Author:	Kung, Michele Liu
View Online:	njit-etd2003-092 (xiii, 85 pages ~ 7.5 MB pdf)
Department:	Biomedical Engineering Committee
Degree:	Master of Science
Program:	Biomedical Engineering
Document Type:	Thesis
Advisory Committee:	Alvarez, Tara L. (Committee chair) Reisman, Stanley S. (Committee member) Greene, Richard (Committee member)
Date:	2003-08
Keywords:	Disparity activate Disparity vergence Eye movement Independent component analysis (ICA)
Availability:	Unrestricted
Abstract:	To fixate on a target that moves from far to near, changes in blur and disparity activate accommodation and disparity vergence. The goal of this study was to experimentally obtain eye movement data from four subjects, and analyze this data using through a new signal processing algorithm known as independent component analysis (ICA). 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. ICA was used as a blind source separation technique to analyze experimental and simulated data. Loss of independence between the sustaining component and the accommodative component is speculated to cause ICA to be unable to determine the accommodative component.