Publication: Time course of the inhibitory tagging effect in ongoing emotional processing. A HD-tDCS study.
Authors
Castillo, Alejandro ; Sánchez Pérez, Noelia ; Vivas, Ana B. ; Campoy, Guillermo ; Fuentes Melero, Luis José ; Martínez Pérez, Víctor
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Publisher
Elsevier
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DOI
https://doi.org/10.1016/j.neuropsychologia.2019.107242
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info:eu-repo/semantics/article
Description
© 2019 Elsevier Ltd. This document is the Published Manuscript version of a Published Work that appeared in final form in Neuropsychologia. To access the final edited and published work see https://doi.org/10.1016/j.neuropsychologia.2019.107242
Abstract
When a cueing procedure that usually triggers inhibition of return (IOR) effects is combined with tasks that tap
semantic processing, or involve response-based conflict, an inhibitory tagging (IT) emerges that disrupts responses to stimuli at inhibited locations. IT seems to involve the executive prefrontal cortex, mainly the left
dorsolateral prefrontal cortex (DLPFC), in cognitive conflict tasks. Contrary to other inhibitory effects, IT has
been observed with rather short intervals, concretely when the stimulus onset asynchrony (SOA) between the
prime presented at the cued location, and the subsequent target is 250 ms. Here we asked whether IT is also
applied to ongoing emotional processing, and whether the left DLPFC plays a causal role in IT using HD-tDCS. In
two experiments with an emotional conflict task, we observed reduced conflict effects, the signature of IT, when
the prime word was presented at the cued location, and once again when the prime-target SOA was just 250 ms.
Also, the IT effect was eliminated when cathodal stimulation was applied to the left DLPFC. These findings
suggest that the IT effect involves areas of the executive attention network and cooperates with IOR to favor
attentional allocation to novel unexplored objects/locations, irrespective of their emotional content.
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Citation
Neuropsychologia, 2019, Vol. 135 : 107242
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