Enhanced recognition memory in grapheme-color synaesthesia for different categories of visual stimuli

Ward, Jamie; Hovard, Peter; Jones, Alicia; Rothen, Nicolas (2013). Enhanced recognition memory in grapheme-color synaesthesia for different categories of visual stimuli. Frontiers in Psychology, 4(762), pp. 1-8. Frontiers Research Foundation 10.3389/fpsyg.2013.00762

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Memory has been shown to be enhanced in grapheme-color synaesthesia, and this enhancement extends to certain visual stimuli (that don't induce synaesthesia) as well as stimuli comprised of graphemes (which do). Previous studies have used a variety of testing procedures to assess memory in synaesthesia (e.g., free recall, recognition, associative learning) making it hard to know the extent to which memory benefits are attributable to the stimulus properties themselves, the testing method, participant strategies, or some combination of these factors. In the first experiment, we use the same testing procedure (recognition memory) for a variety of stimuli (written words, non-words, scenes, and fractals) and also check which memorization strategies were used. We demonstrate that grapheme-color synaesthetes show enhanced memory across all these stimuli, but this is not found for a non-visual type of synaesthesia (lexical-gustatory). In the second experiment, the memory advantage for scenes is explored further by manipulating the properties of the old and new images (changing color, orientation, or object presence). Again, grapheme-color synaesthetes show a memory advantage for scenes across all manipulations. Although recognition memory is generally enhanced in this study, the largest effects were found for abstract visual images (fractals) and scenes for which color can be used to discriminate old/new status.

Item Type: Journal Article (Original Article)
Division/Institute: 07 Faculty of Human Sciences > Institute of Psychology > Experimental Psychology and Neuropsychology
UniBE Contributor: Rothen, Nicolas
Subjects: 100 Philosophy > 150 Psychology
600 Technology > 610 Medicine & health
ISSN: 1664-1078
Publisher: Frontiers Research Foundation
Language: English
Submitter: Nicolas Rothen
Date Deposited: 17 Aug 2016 08:41
Last Modified: 17 Aug 2016 08:41
Publisher DOI: 10.3389/fpsyg.2013.00762
PubMed ID: 24187542
BORIS DOI: 10.7892/boris.85884
URI: http://boris.unibe.ch/id/eprint/85884

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