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Lookup NU author(s): Professor Tim GriffithsORCiD,
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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.
Author(s): Banissy MJ, Stewart L, Muggleton NG, Griffiths TD, Walsh VY, Ward J, Kanai R
Publication type: Article
Publication status: Published
Journal: Cognitive Neuroscience
Print publication date: 14/11/2011
ISSN (print): 1758-8928
ISSN (electronic): 1758-8936
Publisher: Psychology Press
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