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- W2885335672 abstract "Abstract Human and non‐human primates can readily perceive the shape of objects using visual motion. Classically, shape, and motion are considered to be separately processed via ventral and dorsal cortical pathways, respectively. However, many lines of anatomical and physiological evidence have indicated that these two pathways are likely to be interconnected at some stage. For motion‐defined shape perception, these two pathways should interact with each other because the ventral pathway must utilize motion, which the dorsal pathway processes, to extract shape signal. However, it is unknown how interactions between cortical pathways are involved in neural mechanisms underlying motion‐defined shape perception. We review evidence from psychophysical, lesion, neuroimaging and physiological research on motion‐defined shape perception and then discuss the effects of behavioral demands on neural activity in ventral and dorsal cortical areas. Further, we discuss functions of two candidate sets of levels: early and higher‐order cortical areas. The extrastriate area V4 and middle temporal ( MT ) area, which are reciprocally connected, at the early level are plausible areas for extracting the shape and/or constituent parts of shape from motion cues because neural dynamics are different from those during luminance‐defined shape perception. On the other hand, among other higher‐order visual areas, the anterior superior temporal sulcus likely contributes to the processing of cue‐invariant shape recognition rather than cue‐dependent shape processing. We suggest that sharing information about motion and shape between the early visual areas in the dorsal and ventral pathways is dependent on visual cues and behavioral requirements, indicating the interplay between the pathways." @default.
- W2885335672 created "2018-08-22" @default.
- W2885335672 creator A5000622011 @default.
- W2885335672 creator A5067435988 @default.
- W2885335672 date "2018-08-31" @default.
- W2885335672 modified "2023-10-14" @default.
- W2885335672 title "Neuronal correlates of motion‐defined shape perception in primate dorsal and ventral streams" @default.
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