Grapheme-colour synaesthesia improves detection of embedded shapes, but without pre-attentive "pop-out" of synaesthetic colour

Ward, Jamie, Jonas, Clare, Dienes, Zoltan and Seth, Anil (2010) Grapheme-colour synaesthesia improves detection of embedded shapes, but without pre-attentive "pop-out" of synaesthetic colour. Proceedings B: Biological Sciences, 277 (1684). pp. 1021-1026. ISSN 1471-2954

Full text not available from this repository.

Abstract

For people with synaesthesia letters and numbers may evoke experiences of colour. It has been previously demonstrated that these synaesthetes may be better at detecting a triangle made of 2s among a background of 5s if they perceive 5 and 2 as having different synaesthetic colours. However, other studies using this task (or tasks based on the same principle) have failed to replicate the effect or have suggested alternative explanations of the effect. In this study, we repeat the original study on a larger group of synaesthetes (n = 36) and include, for the first time, an assessment of their self-reported colour experiences. We show that synaesthetes do have a general advantage over controls on this task. However, many synaesthetes report no colour experiences at all during the task. Synaesthetes who do report colour typically experience around one third of the graphemes in the display as coloured. This is more consistent with theories of synaesthesia in which spatial attention needs to be deployed to graphemes for conscious colour experiences to emerge than the interpretation based on 'pop-out'.

Item Type: Article
Schools and Departments: School of Psychology > Psychology
Depositing User: Jamie Ward
Date Deposited: 06 Feb 2012 15:41
Last Modified: 11 Jun 2013 15:48
URI: http://srodev.sussex.ac.uk/id/eprint/13902
📧 Request an update