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Publisher Summary This chapter examines whether, beyond the coarse sampling of students, there is evidence for a direct route between action and vision. In addition, the chapter describes whether information about action itself interacts with vision in a direct way, influencing what one sees. Mutual interactions between vision and action determine both what are seen and what behaviors are selected to stimuli. It considers evidence from a range of sources (experimental, neuropsychological, brain imaging, and computational modeling) that supports the existence of a route from vision to action and that tells us about its nature. Experimental, neuropsychological, computational, and functional imaging studies indicate that vision can directly lead to the activation of categorical actions to objects, not mediated by conceptual/semantic knowledge. Experimental and neuropsychological evidence indicates that action also affects vision by (1) ‘‘weighting’’ action-related properties of stimuli and by (2) binding together separate objects that are in appropriate relations for action. This interactive framework provides a means of understanding normal behavior and a wide spectrum of neuropsychological disorders. |
