Music Therapy and Visual Processing
Visual neglect is the inability to recognize objects in part of the visual field due to lesions in the visual cortex. Specifically, a lesion in one hemisphere produces neglect in the opposite visual field (so a stroke in the left visual cortex would result in one being unable recognize objects in the right visual field, and vice versa). In one study of stroke patients experiencing visual neglect, listening to pleasant music resulted in both better mood and a statistically significant improvement in their ability to describe the color and shape of geometric objects presented via computer. No such effects were observed when patients sat in silence or when they were presented with music that they did not like.
Further examination with functional magnetic resonance imaging (fMRI) confirmed that listening to pleasant music activated a number of different brain areas, including those involved in visual processing.
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