Using transcranial Direct Current Stimulation (tDCS) to influence decision criterion in a target detection paradigm
Civile, C; McLaren, I; Cooke, A; et al.McLaren, IPL
Date: 23 June 2022
Article
Journal
Journal of Experimental Psychology: Animal Learning and Cognition
Publisher
American Psychological Association
Publisher DOI
Abstract
In this paper we investigate how a psychological theory used to model perceptual
learning and face recognition, can be used to predict that anodal tDCS delivered over the
DLPFC at Fp3 site (for 10 mins duration at 1.5mA intensity) modulates the decision
criterion, C, (and not d-prime, d') in a target detection task. In two ...
In this paper we investigate how a psychological theory used to model perceptual
learning and face recognition, can be used to predict that anodal tDCS delivered over the
DLPFC at Fp3 site (for 10 mins duration at 1.5mA intensity) modulates the decision
criterion, C, (and not d-prime, d') in a target detection task. In two between-subjects and
double-blind experiments (n=112) we examined the tDCS effects on C when subjects were
engaged in a target detection task, in the first instance involving artificial checkerboard
stimuli (Experiment 1a), and subsequently face stimuli (Experiment 1b). The results from
both experiments revealed that in the sham/control groups a significantly higher C was used
when detecting a target pattern (Experiment 1a) or face (Experiment 1b) presented on a
familiar rather than a random background. Importantly, anodal tDCS significantly
reduced/reversed this difference between C adopted for familiar and random backgrounds in
both Experiment 1a and 1b without affecting d'. These results contribute to advance our
understanding of the tDCS-induced effects on stimulus representation and to the literature
regarding the modulation of C
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