Effects of transcranial direct current stimulation on risky decision making are mediated by ‘hot’ and ‘cold’ decisions, personality, and hemisphere

2013 ◽  
Vol 38 (12) ◽  
pp. 3778-3785 ◽  
Author(s):  
Jürgen Pripfl ◽  
Renate Neumann ◽  
Ulla Köhler ◽  
Claus Lamm
Keyword(s):  
Decision Making ◽  
Direct Current ◽  
Transcranial Direct Current Stimulation ◽  
Risky Decision Making ◽  
Risky Decision ◽  
Direct Current Stimulation

scholarly journals Is value-based choice repetition susceptible to medial frontal transcranial direct current stimulation (tDCS)? A preregistered study

2021 ◽  
Author(s):  
Ulrike Senftleben ◽  
Johanna Kruse ◽  
Franziska M. Korb ◽  
Stefan Goetz ◽  
Stefan Scherbaum
Keyword(s):  
Decision Making ◽  
Prefrontal Cortex ◽  
Medial Prefrontal Cortex ◽  
Direct Current ◽  
Transcranial Direct Current Stimulation ◽  
Interindividual Variability ◽  
Repetition Effects ◽  
Direct Current Stimulation ◽  
Subjective Value ◽  
Is Value

AbstractIn value-based decision making, people have to weigh different options based on their subjective value. This process, however, also is influenced by choice biases, such as choice repetition: in a series of choices, people are more likely to repeat their decision than to switch to a different choice. Previously, it was shown that transcranial direct current stimulation (tDCS) can affect such choice biases. We applied tDCS over the medial prefrontal cortex to investigate whether tDCS can alter choice repetition in value-based decision making. In a preregistered study, we applied anodal, cathodal, and sham tDCS stimulation to 52 participants. While we found robust choice repetition effects, we did not find support for an effect of tDCS stimulation. We discuss these findings within the larger scope of the tDCS literature and highlight the potential roles of interindividual variability and current density strength.

Multifocal transcranial direct current stimulation over prefrontal cortex diminishes risk decision making: A preliminary study

2019 ◽  
Vol 12 (2) ◽  
pp. 485
Author(s):  
O. Martin de la Torre ◽  
D. Gallardo-Pujol ◽  
E. Marron ◽  
R. Viejo-Sobera ◽  
A. Cuevas-Gonzalez ◽  
...  
Keyword(s):  
Decision Making ◽  
Prefrontal Cortex ◽  
Direct Current ◽  
Transcranial Direct Current Stimulation ◽  
Direct Current Stimulation ◽  
Preliminary Study ◽  
Risk Decision

scholarly journals Transcranial Direct Current Stimulation of the Motor Cortex Biases Action Choice in a Perceptual Decision Task

2015 ◽  
Vol 27 (11) ◽  
pp. 2174-2185 ◽  
Author(s):  
Amir-Homayoun Javadi ◽  
Angeliki Beyko ◽  
Vincent Walsh ◽  
Ryota Kanai
Keyword(s):  
Decision Making ◽  
Motor Cortex ◽  
Response Bias ◽  
Direct Current ◽  
Transcranial Direct Current Stimulation ◽  
Perceptual Decision Making ◽  
Perceptual Decision ◽  
Left Hand ◽  
Direct Current Stimulation ◽  
Stimulation Of

One of the multiple interacting systems involved in the selection and execution of voluntary actions is the primary motor cortex (PMC). We aimed to investigate whether the transcranial direct current stimulation (tDCS) of this area can modulate hand choice. A perceptual decision-making task was administered. Participants were asked to classify rectangles with different height-to-width ratios into horizontal and vertical rectangles using their right and left index fingers while their PMC was stimulated either bilaterally or unilaterally. Two experiments were conducted with different stimulation conditions: the first experiment (n = 12) had only one stimulation condition (bilateral stimulation), and the second experiment (n = 45) had three stimulation conditions (bilateral, anodal unilateral, and cathodal unilateral stimulations). The second experiment was designed to confirm the results of the first experiment and to further investigate the effects of anodal and cathodal stimulations alone in the observed effects. Each participant took part in two sessions. The laterality of stimulation was reversed over the two sessions. Our results showed that anodal stimulation of the PMC biases participants' responses toward using the contralateral hand whereas cathodal stimulation biases responses toward the ipsilateral hand. Brain stimulation also modulated the RT of the left hand in all stimulation conditions: Responses were faster when the response bias was in favor of the left hand and slower when the response bias was against it. We propose two possible explanations for these findings: the perceptual bias account (bottom–up effects of stimulation on perception) and the motor-choice bias account (top–down modulation of the decision-making system by facilitation of response in one hand over the other). We conclude that motor responses and the choice of hand can be modulated using tDCS.

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