Enhanced dimension-specific visual working memory in grapheme-color synesthesia.
Bottom Line: Synesthetes displayed superior color working memory than controls for both grapheme types, whereas the two groups did not differ in grapheme working memory.Further analyses excluded the possibilities of enhanced working memory among synesthetes being due to greater color discrimination, stimulus color familiarity, or bidirectionality.These results reveal enhanced dimension-specific visual working memory in this population and supply further evidence for a close relationship between sensory processing and the maintenance of sensory information in working memory.
Affiliation: Department of Experimental Psychology, University of Oxford, UK. firstname.lastname@example.orgShow MeSH
Related in: MedlinePlus
Mentions: In the inducer graphemes task, main effects of Load, F(1, 30) = 4.28, MSE = 18,809, p = .047, , and Type, F(1, 30) = 12.09, MSE = 8,508, p = .002, , were qualified by Load × Type, F(1, 30) = 4.54, MSE = 1,980, p = .041, , and Load × Congruency × Type interactions, F(1, 30) = 6.26, MSE = 1,380, p = .018, . The Congruency × Type interaction was significant in the 2-back condition, F(1, 30) = 5.60, MSE = 843, p = .025, (the Congruency effect was not significant for foils or targets, Fs < 3.5), but not in the 3-back condition, F < 1.7. There was also a Congruency × Group interaction, F(1, 30) = 4.24, MSE = 1,882, p = .048, (95% CIs: .00, .34): the Congruency effect was greater among synesthetes than controls (see Fig. 3), but neither effect was independently significant, synesthetes: F < 2.4, η2 = .14 (95% CIs: .00, .42), controls: F < 2.3 No other effects were found, Fs < 3.2. Color discrimination, when included as a covariate, did not exhibit an effect on task performance, F < 0.04.
Affiliation: Department of Experimental Psychology, University of Oxford, UK. email@example.com