title: Behavioral control of visual fixation of the rhesus monkey.
abstract: A paradigm for the control of visual fixation of the macaque monkey in vision experiments was described. Using a Maxwellian view, the procedure permits the placement of discrete test-light stimuli in a specific area of the retina as the monkey fixates a primary target. This procedure holds foveal fixation as other behaviorally significant visual stimuli are presented to the visual field. By a methods-of-limits procedure, the sensitivity of the monkey eye was measured at different retinal locations under both photopic and scotopic visual adaptation.
mesh_terms: D000161:Acoustic Stimulation; D000221:Adaptation, Ocular; D000818:Animals; D003216:Conditioning, Operant; D003623:Dark Adaptation; D004056:Differential Threshold; D005403:Fixation, Ocular; D005425:Flicker Fusion; D005584:Fovea Centralis / Q000502:physiology; D000882:Haplorhini; D006801:Humans; D008253:Macaca mulatta; D055095:Optics and Photonics / Q000295:instrumentation*; D009949:Orientation; D010775:Photic Stimulation; D010786:Photoreceptor Cells / Q000502:physiology; D012055:Reinforcement Schedule; D014785:Vision, Ocular