Systematic distortion of perceived 2D shape during smooth pursuit eye movements
نویسندگان
چکیده
Even when the retinal image of a static scene is constantly shifting, as occurs when the viewer pursues a small moving object with his or her eyes, the scene is usually correctly perceived to be static. Following early suggestions by von Helmholtz, it is commonly believed that this spatial stability is achieved by combining retinal and extra-retinal signals. Here, we report a perceptually salient 2D shape distortion that can arise during pursuit. We provide evidence that the perceived 2D shape reflects retinal image contents alone, implying that the extra-retinal signal is ignored when judging 2D shape.
منابع مشابه
Direction and extent of perceived motion smear during pursuit eye movement
Smooth pursuit eye movements superimpose additional motion on the retinal image of untracked visual targets, potentially leading to the perception of motion smear and a distortion of the perceived direction of motion. Previously, we demonstrated an attenuation of perceived motion smear when the untracked target moves in the opposite direction of an ongoing pursuit eye movement. In this study, t...
متن کاملLetter to the Editors Figure Distortion Accompanying Pursuit Eye
Interest in pursuit eye movements has recently been revived by observations that show the adequate stimulus for visual pursuit to be more complex than was previously thought. Pursuit can be maintained without a continuously present stimulus, and even target movement is unnecessary under some conditions. The first modem demonstration of such effects was Stoper’s (1967) “picket-fence illusion”, w...
متن کاملObject-based anisotropic mislocalization by retinotopic motion signals
The relative visual positions of briefly flashed stimuli are systematically modified in the presence of motion signals. We have recently shown that the perceived position of a spatially extended flash stimulus is anisotropically shifted toward a single convergent point back along the trajectory of a moving object without a significant change in the perceived shape of the flash [Watanabe, K., & ...
متن کاملSuppression of motion-produced smear during smooth pursuit eye movements
Humans make smooth tracking eye movements to keep the image of a moving target on the foveal region of the retina and, thereby, maintain acute vision. Although the images of physically stationary background stimuli sweep across the retina during smooth pursuit eye movements, non-pursued targets are usually perceived to be neither moving nor smeared. The lack of perceived movement of background ...
متن کاملVertical object motion during horizontal ocular pursuit: compensation for eye movements increases with presentation duration
Smooth pursuit eye movements change the retinal image motion of objects in the visual field. To enable an observer to perceive the motion of these objects veridically, the visual system has to compensate for the effects of the eye movements. The occurrence of the Filehne-illusion (illusory motion of a stationary object during smooth pursuit) shows that this compensation is not always perfect. T...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Vision Research
دوره 42 شماره
صفحات -
تاریخ انتشار 2002