Adaptation to Anamorphosing Lenses: Perceptive Responses and Visuomotor Coordination
The control of the interactions between the body and its environment requires from the central nervous system a capacity to perceive three-dimensional (3-D) metric parameters such as lengths, angles, and curvatures. However, primary visual information consists in bidimensional (2-D) images formed on the retina and coded retinotopically by the first neural networks in the visual pathways. Motion parallax is one of the depth cues that allow the visual system to perform the inference of 3-D structure from 2-D images. This is demonstrated by the kinetic depth effect (Wallach and O’Connell, 1953) where the shadows of 3-D objects are projected on a screen (Fig. 10–1). As the objects move in the 3-D space, an observer can perceive their structure by looking at the screen. In order to account for this type of perceptual phenomenon, Gibson (1966) developed an approach leading to the scheme presented in Fig. 10–2.
KeywordsRetinal Image Visual Scene Motion Parallax Lens Wear Visuomotor Adaptation
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