Motion-induced perceptual extrapolation of blurred visual targets.
In the motion-extrapolation hypothesis, the visual system can extrapolate the instantaneous position of a moving object from its past trajectory. The existence of such a mechanism in human vision has been intensely debated. Here, we show compelling perceptual extrapolation of both first- and second-order moving stimuli, the magnitude of which depends on blurring of the visual target. The spatiotemporal characteristics of the extrapolation can be quantitatively accounted for by a simple model based on temporally biphasic neuronal response, a property widely observed among sensory neurons. Thus, motion-induced perceptual extrapolation exists in human vision, and spatial blurring is an important factor in the interaction between motion and perceptual localization.
Fu
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YX
Division of Neurobiology, Department of Molecular and Cell Biology, University of California, Berkeley, California 94720, USA.
Shen
Y
Y
Dan
Y
Y
D003198:Computer Simulation; D015350:Contrast Sensitivity / Q000502:physiology*; D003626:Data Display; D005403:Fixation, Ocular / Q000502:physiology*; D006801:Humans; D008959:Models, Neurological; D009039:Motion Perception / Q000502:physiology*; D009474:Neurons / Q000502:physiology; D016011:Normal Distribution; D010775:Photic Stimulation / Q000295:instrumentation / Q000379:methods*; D011601:Psychophysics; D015203:Reproducibility of Results