tDCS Facilitation of Picture Naming: Item-Specific, Task General, or Neither?

Frontiers in Neuroscience
Joshua S Payne, Marie-Josèphe Tainturier

Abstract

The aim of the present study was to clarify the conditions under which anodal tDCS applied to left hemisphere language sites may facilitate picture naming latencies in healthy young adults. We built upon previous studies by directly testing for item-specific and generalized effects of tDCS through manipulation of item-familiarization and through testing for both online and offline effects of stimulation, in the same paradigm. In addition, we tested for the robustness of these effects by comparing two left hemisphere sites critical for lexical retrieval. Twenty-eight healthy young adults completed two testing sessions receiving either anodal (1.5 mA, 20 min) or sham stimulation (1.5 mA, 30 s) in each session. Half of the participants received tDCS over the left inferior frontal region and the other half over the left posterior superior temporal region. All participants were asked to a name a set of pictures and their response latencies were compared at three time points (before, during, and after the end of stimulation). The stimulus set was constructed so that some items were presented at all time points, some before and after stimulation, and some during stimulation only. A parsimonious linear mixed effects model (LMM) reveale...Continue Reading

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Citations

Jun 13, 2020·Journal of Cognitive Neuroscience·Til Ole Bergmann, Gesa Hartwigsen
Oct 16, 2020·Journal of Cognitive Neuroscience·Chong Zhao, Geoffrey F Woodman

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Software Mentioned

COMETS2
lme4
RePsychLing
R Core
anomia
MATLAB
Open R
R

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