Abstract：
:Accurate saccadic and vergence eye movements towards selected visual targets are fundamental to perceive the 3-D environment. Despite this importance, shifts in eye gaze are not always perfect given that they are frequently followed by small corrective eye movements. The oculomotor system receives distinct information from various visual cues that may cause incongruity in the planning of a gaze shift. To test this idea, we analyzed eye movements in humans performing a saccade task in a 3-D setting. We show that saccades and vergence movements towards peripheral targets are guided by monocular (perceptual) cues. Approximately 200ms after the start of fixation at the perceived target, a fixational saccade corrected the eye positions to the physical target location. Our findings suggest that shifts in eye gaze occur in two phases; a large eye movement toward the perceived target location followed by a corrective saccade that directs the eyes to the physical target location.
journal_name
Vision Resjournal_title
Vision researchauthors
Pérez Zapata L,Aznar-Casanova JA,Supèr Hdoi
10.1016/j.visres.2013.04.005subject
Has Abstractpub_date
2013-06-28 00:00:00pages
15-26eissn
0042-6989issn
1878-5646pii
S0042-6989(13)00096-5journal_volume
86pub_type
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