• X Xiao, N Dupuis-Roy, X L Yang, J F Qiu, and Q L Zhang.
• Department of Medical Psychology and Medical Ethics, School of Public Health and Management, Chongqing Medical University, Chongqing 400016, China; Medical and Social Development Research Center, Chongqing Medical University, Chongqing 400016, China.
• Neuroscience. 2014 Mar 28;263:250-6.

AbstractEvent-related potentials (ERPs) were recorded to explore, for the first time, the electrophysiological correlates of the taste-visual cross-modal Stroop effect. Eighteen healthy participants were presented with a taste stimulus and a food image, and asked to categorize the image as "sweet" or "sour" by pressing the relevant button as quickly as possible. Accurate categorization of the image was faster when it was presented with a congruent taste stimulus (e.g., sour taste/image of lemon) than with an incongruent one (e.g., sour taste/image of ice cream). ERP analyses revealed a negative difference component (ND430-620) between 430 and 620ms in the taste-visual cross-modal Stroop interference. Dipole source analysis of the difference wave (incongruent minus congruent) indicated that two generators localized in the prefrontal cortex and the parahippocampal gyrus contributed to this taste-visual cross-modal Stroop effect. This result suggests that the prefrontal cortex is associated with the process of conflict control in the taste-visual cross-modal Stroop effect. Also, we speculate that the parahippocampal gyrus is associated with the process of discordant information in the taste-visual cross-modal Stroop effect.Copyright © 2014 IBRO. Published by Elsevier Ltd. All rights reserved.

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