TY  - JOUR
PY  - 2015//
TI  - Altering risky decision making: influence of impulsivity on the neuromodulation of prefrontal cortex
JO  - Social neuroscience
A1  - Cheng, Gordon L. F.
A1  - Lee, Tatia M. C.
SP  - 353
EP  - 364
VL  - 11
IS  - 4
N2  - Abtract The prefrontal cortex subserves complex cognitive abilities, including risky decision-making; the modulation of this brain area was shown to alter the way people take risks. Yet, neuromodulation of the prefrontal cortex in relation to risk-taking behavior remains relatively less well-studied. Moreover, the psychological variables that influence such neuromodulation remain poorly understood. To address these issues, sixteen participants took part in three experimental sessions on separate days. They received: (1) left anodal-right cathodal transcranial direct current stimulation; (2) left cathodal-right anodal stimulation; or (3) sham stimulation while they completed two risk-taking tasks. They also measured on several cognitive-affective abilities and personality traits. It was revealed that left cathodal-right anodal stimulation led to significantly reduced risk-taking under a context of haste. The reduction of risk-taking (relative to sham) correlated with state and trait impulsivity, such that the effect was larger in more impulsive individuals. For these individuals, the tDCS effect size was considered to be large (generalized partial eta squared > 0.17). The effect of prefrontal-neuromodulation in reducing risk-taking was influenced by baseline impulsivity, reflecting a state-dependent effect of neuromodulation on the prefrontal cortex. The results of this study carry important insights into the use of neuromodulation to alter higher cognition.<p />  <p>Language: en</p>
LA  - en
SN  - 1747-0919
UR  - http://dx.doi.org/10.1080/17470919.2015.1085895
ID  - ref1
ER  -