spatio-temporal interpolation is accomplished by binocular form and motion mechanisms时空插值是通过双目形式和运动机制.pdf

Spatio-Temporal Interpolation Is Accomplished by Binocular Form and Motion Mechanisms Farid I. Kandil*, Markus Lappe ¨ ¨ ¨ Department of General Psychology, Westfalische Wilhelms University of Munster, Munster, Germany Spatio-temporal interpolation describes the ability of the visual system to perceive shapes as whole figures (Gestalts), even if they are moving behind narrow apertures, so that only thin slices of them meet the eye at any given point in time. The interpolation process requires registration of the form slices, as well as perception of the shape’s global motion, in order to reassemble the slices in the correct order. The commonly proposed mechanism is a spatio-temporal motion detector with a receptive field, for which spatial distance and temporal delays are interchangeable, and which has generally been regarded as monocular. Here we investigate separately the nature of the motion and the form detection involved in spatio-temporal interpolation, using dichoptic masking and interocular presentation tasks. The results clearly demonstrate that the associated mechanisms for both motion and form are binocular rather than monocular. Hence, we question the traditional view according to which spatio-temporal interpolation is achieved by monocular first-order motion-energy detectors in favour of models featuring binocular motion and form detection. Citation: Kandil FI, Lappe M (2007) Spatio-Temporal Interpolation Is Accomplished by Binocular Form and Motion Mechanisms. PLoS ONE 2(2): e264. doi:10.1371/journal.pone.0000264 INTRODUCTION The third kind of display presents multi-slit views in combina- Spatio-temporal interpolation is one of those integrative components tion with objects that are smaller than t