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Enhanced dimension-specific visual working memory in grapheme-color synesthesia.

Terhune DB, Wudarczyk OA, Kochuparampil P, Cohen Kadosh R - Cognition (2013)

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.

View Article: PubMed Central - PubMed

Affiliation: Department of Experimental Psychology, University of Oxford, UK. devin.terhune@psy.ox.ac.uk

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Means ±1 standard error of the mean (SEM) for (A) ER and (B) RT in the inducer graphemes task as a function of Congruency in controls and synesthetes in Experiment 2.
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f0020: Means ±1 standard error of the mean (SEM) for (A) ER and (B) RT in the inducer graphemes task as a function of Congruency in controls and synesthetes in Experiment 2.

Mentions: There was a main effect of Load in the inducer graphemes task, F(1, 18) = 24.12, MSE = 0.02, p < .001, , with participants making fewer errors in the 2-back than in the 3-back condition. Crucially, there were no main effects of Congruency, F < 0.5, or Group, F < 0.7, or a Congruency × Group interaction, F < 0.07, (95% CIs: .00, .12) (see Fig. 4A). As in Experiment 1, the synesthetes’ Congruency effect, MSynCong = –.004, SEM = .012, was inconsistent with the prediction of the dual-coding hypothesis, B = .07; there were no other effects, Fs < 2.7.


Enhanced dimension-specific visual working memory in grapheme-color synesthesia.

Terhune DB, Wudarczyk OA, Kochuparampil P, Cohen Kadosh R - Cognition (2013)

Means ±1 standard error of the mean (SEM) for (A) ER and (B) RT in the inducer graphemes task as a function of Congruency in controls and synesthetes in Experiment 2.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3757159&req=5

f0020: Means ±1 standard error of the mean (SEM) for (A) ER and (B) RT in the inducer graphemes task as a function of Congruency in controls and synesthetes in Experiment 2.
Mentions: There was a main effect of Load in the inducer graphemes task, F(1, 18) = 24.12, MSE = 0.02, p < .001, , with participants making fewer errors in the 2-back than in the 3-back condition. Crucially, there were no main effects of Congruency, F < 0.5, or Group, F < 0.7, or a Congruency × Group interaction, F < 0.07, (95% CIs: .00, .12) (see Fig. 4A). As in Experiment 1, the synesthetes’ Congruency effect, MSynCong = –.004, SEM = .012, was inconsistent with the prediction of the dual-coding hypothesis, B = .07; there were no other effects, Fs < 2.7.

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.

View Article: PubMed Central - PubMed

Affiliation: Department of Experimental Psychology, University of Oxford, UK. devin.terhune@psy.ox.ac.uk

Show MeSH
Related in: MedlinePlus