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Investigating the residual visual pathways following damage to primary visual cortex

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Damage to the primary visual cortex leads to loss of the visual field contralateral to the damaged cortex. However, in spite of this loss, some patients are still able to detect visual information about stimuli presented within their blind field. A growing area of research aims to exploit this residual visual function to try to improve visual performance through rehabilitation programmes stimulating the blind field. However, to optimise such programmes it is important to understand the pathways through which this information is conveyed.

Here I will present a series of functional magnetic resonance imaging studies in which we attempted to elucidate these pathways in a group of hemianopic patients, some with, and some without, residual vision.

This talk is part of the Craik Club series.

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