When blue is larger than red: colors influence numerical cognition in synesthesia.

Cohen Kadosh, R., Sagiv, N., Linden, David Edmund Johannes ORCID: https://orcid.org/0000-0002-5638-9292, Robertson, L. C., Elinger, G. and Henik, A. 2005. When blue is larger than red: colors influence numerical cognition in synesthesia. Journal of Cognitive Neuroscience 17 (11) , pp. 1766-1773. 10.1162/089892905774589181

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Abstract

In synesthesia, certain stimuli ("inducers") may give rise to perceptual experience in additional modalities not normally associated with them ("concurrent"). For example, color-grapheme synesthetes automatically perceive achromatic numbers as colored (e.g., 7 is turquoise). Although synesthetes know when a given color matches the one evoked by a certain number, colors do not automatically give rise to any sort of number experience. The behavioral consequences of synesthesia have been documented using Stroop-like paradigms, usually using color judgments. Owing to the unidirectional nature of the synesthetic experience, little has been done to obtain performance measures that could indicate whether bidirectional cross-activation occurs in synesthesia. Here it is shown that colors do implicitly evoke numerical magnitudes in color-grapheme synesthetes, but not in nonsynesthetic participants. It is proposed that bidirectional coactivation of brain areas is responsible for the links between color and magnitude processing in color-grapheme synesthesia and that unidirectional models of synesthesia might have to be revised.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Medicine MRC Centre for Neuropsychiatric Genetics and Genomics (CNGG) Neuroscience and Mental Health Research Institute (NMHRI)
Subjects:	R Medicine > R Medicine (General)
Publisher:	MIT Press
ISSN:	0898-929X
Last Modified:	31 Oct 2022 10:02
URI:	https://orca.cardiff.ac.uk/id/eprint/83353

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