Paffen Chris L E, Van der Smagt Maarten J, Nijboer Tanja C W
Experimental Psychology & Helmholtz Institute, Faculty of Social and Behavioral Sciences, Utrecht University, Heidelberglaan 2, 3584 CS, The Netherlands.
Experimental Psychology & Helmholtz Institute, Faculty of Social and Behavioral Sciences, Utrecht University, Heidelberglaan 2, 3584 CS, The Netherlands.
Conscious Cogn. 2015 May;33:325-33. doi: 10.1016/j.concog.2015.01.020. Epub 2015 Feb 19.
Grapheme-color synesthetes perceive achromatic graphemes to be inherently colored. In this study grapheme-color synesthetes and non-synesthetes discriminated (1) the color of visual targets presented along with aurally presented digit primes, and (2) the identity of aurally presented digit targets presented with visual color primes. Reaction times to visual color targets were longer when the color of the target was incongruent with the synesthetic percept reported for the prime. Likewise, discriminating aurally presented digit targets took longer when the color of the prime was incongruent with the synesthetic percept for the target. These priming effects were absent in non-synesthetes. We conclude that binding between digits and colors in grapheme-color synesthetes can occur bidirectionally across senses. The results are in line with the idea that synesthesia is the result of linking inducing stimuli (e.g. digits) to synesthetic percepts (colors) at an abstract - supra-modal - conceptual level of processing.
grapheme - 颜色联觉者认为无色彩的字母具有内在颜色。在本研究中，grapheme - 颜色联觉者和非联觉者对以下两项进行了辨别：（1）与听觉呈现的数字启动刺激同时呈现的视觉目标的颜色，以及（2）与视觉颜色启动刺激一起呈现的听觉呈现的数字目标的身份。当目标颜色与针对启动刺激所报告的联觉感知不一致时，对视觉颜色目标的反应时间会更长。同样，当启动刺激的颜色与目标的联觉感知不一致时，辨别听觉呈现的数字目标所需的时间也会更长。这些启动效应在非联觉者中不存在。我们得出结论，grapheme - 颜色联觉者中数字与颜色之间的绑定可以跨感官双向发生。这些结果与联觉是在抽象的 - 超模态的 - 概念处理水平上将诱发刺激（如数字）与联觉感知（颜色）联系起来的结果这一观点一致。
