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Disruption of synaesthesia following TMS of the right posterior parietal cortex

Muggleton, N; Tsakanikos, E; Walsh, V; Ward, J; (2007) Disruption of synaesthesia following TMS of the right posterior parietal cortex. NEUROPSYCHOLOGIA , 45 (7) 1582 - 1585. 10.1016/j.neuropsychologia.2006.11.021.

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Abstract

This study examines the role of four regions of the parietal lobe in grapheme-colour synaesthesia. TMS applied over a right parieto-occipital region disrupts performance on a synaesthetic priming task. TMS over the left parietal or a more anterior right parietal site did not have a reliable effect on synaesthesia even though one of the sites had been implicated in synaesthesia by previous fMRI studies. The same disruption is found for synaesthetes who experience colours in their "mind's eye" as well as those who project colours onto the inducing grapheme. This region may be important for binding graphemes and colours to different spatial reference frames. (c) 2006 Elsevier Ltd. All rights reserved.

Type:Article
Title:Disruption of synaesthesia following TMS of the right posterior parietal cortex
DOI:10.1016/j.neuropsychologia.2006.11.021
Keywords:synaesthesia/synesthesia, colour/color, binding, space, parietal, TMS, TRANSCRANIAL MAGNETIC STIMULATION, VISUAL FEATURE, COLOR, SYNESTHESIA, ATTENTION
UCL classification:UCL > School of Life and Medical Sciences > Faculty of Brain Sciences > Psychology and Language Sciences (Division of) > Institute of Cognitive Neuroscience
UCL > School of Life and Medical Sciences > Faculty of Life Sciences

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