Properties of Saccades during Optokinetic Responses to Radial Optic Flow in Monkeys
Optokinetic eye movements stabilize vision in response to large-field visual motion. We have studied oculomotor behavior of rhesus monkeys that viewed large optic flow stimuli. These stimuli present radial motion that is normally experienced during forward self-movement. In previous work (Lappe et al., 1998) we have described that such radial optic flow stimuli also elicit optokinetic responses in the form of slow eye movements which stabilize the moving visual image on the fovea and parafovea. Here we describe the properties of saccades during unrestrained viewing of radial optic flow. We show that the saccades do not share the reflectory nature of the slow phases but rather support an active exploration of the visual scene.
KeywordsOptic Flow Slow Phase Saccadic Amplitude Optokinetic Nystagmus Saccade Direction
Unable to display preview. Download preview PDF.
- Carpenter RHS (1988) Movement Of The Eyes. Pion, London.Google Scholar
- Hoffmann KP (1986) Visual inputs relevant for the optokinetic nystagmus in mammals. In Freund HJ, Büttner U, Cohen B, Noth J (Eds.) Progress in Brain Research. Elsevier.Google Scholar
- Osaka N (1991) Effects of window size and eccentricity upon eye fixation and reaction time in negotiation of curves. In Gale AG, Freeman MH, Haslegrave CM, Smith P, Taylor SP (Eds.) Vision in Vehicles III. Elsevier.Google Scholar
- Yarbus AL (1967) Eye Movements And Vision. Plenum, New York.Google Scholar