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Visual field perimetry is used to characterize deficits that result from visual system injury. However, standard perimetry mapping does not always correspond well to underlying anatomical or functional deficits. We apply functional magnetic resonance imaging to map surviving visual circuits and to classify how the pattern of injury relates to residual visual perception. Select patients undergo visual motion perception rehabilitative training, and scanned to understand the mechanism of recovery. Methods we use include population receptive field mapping, cortico-cortical receptive field mapping,  functional/effective connectivity mapping. Identifying pathways that are potentially modifiable by training promises to guide the development of improved strategies of visual rehabilitation.

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