Banissy, Michael J, Stewart, Lauren, Muggleton, Neil G, Griffiths, Timothy D, Walsh, Vincent Y, Ward, Jamie and Kanai, Ryota (2011) Grapheme-color and tone-color synesthesia is associated with structural brain changes in visual regions implicated in color, form, and motion. Cognitive Neuroscience, 3 (1). pp. 29-35. ISSN 1758-8928

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Abstract

Synesthesia is a rare condition in which stimulation in one modality leads to a secondary experience in another sensory modality. Varying accounts attribute the condition to either neuroanatomical differences between the synesthetes and non-synesthetes or functional differences in how sensory brain regions interact. This study employed voxel-based morphometry to examine whether synesthetes who experience both grapheme-color and tone-color synesthesia as their evoked sensation show neuroanatomical differences in gray matter volume compared to non-synesthetes. We observed that synesthetes showed an increase in gray matter volume in left posterior fusiform gyrus (FG), but a concomitant decrease in anterior regions of left FG and left MT/V5. These findings imply that synesthesia for color is linked to neuroanatomical changes between adjacent regions of the visual system

Item Type:	Article
Schools and Departments:	School of Psychology > Psychology
Depositing User:	Jamie Ward
Date Deposited:	29 Jan 2013 12:54
Last Modified:	29 Jan 2013 12:54
URI:	http://sro.sussex.ac.uk/id/eprint/13072

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