Transcranial direct current stimulation (tDCS) facilitates overall visual search response times but does not interact with visual search task factors.

ABSTRACT: Whether transcranial direct current stimulation (tDCS) affects mental functions, and how any such effects arise from its neural effects, continue to be debated. We investigated whether tDCS applied over the visual cortex (Oz) with a vertex (Cz) reference might affect response times (RTs) in a visual search task. We also examined whether any significant tDCS effects would interact with task factors (target presence, discrimination difficulty, and stimulus brightness) that are known to selectively influence one or the other of the two information processing stages posited by current models of visual search. Based on additive factor logic, we expected that the pattern of interactions involving a significant tDCS effect could help us colocalize the tDCS effect to one (or both) of the processin

SUBMITTER: Sung K 

PROVIDER: S-EPMC5860774 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature