Asymmetries between convergence and divergence reveal tonic vergence is dependent upon phasic vergence function

• Published in: Journal of vision (Charlottesville, Va.) Vol. 17; no. 5; p. 4
• Main Authors: Erkelens, Ian M., Bobier, William R.
• Format: Journal Article
• Language: English
• Published: United States 01.05.2017
• Subjects: Adult; Convergence, Ocular - physiology; Eye Movements; Female; Humans; Male; Saccades - physiology; Vision, Binocular - physiology

Horizontal vergence eye movements are controlled by two processes, phasic and slow-tonic. Slow-tonic responses are hypothesized to be stimulated by the faster, pulse-step neural output of the phasic system. This suggests that the general behavior of each system should be similar; however, this relat...