Gao Mei, Yang Xiaolan, Shi Jinchuan, Lin Yiyang, Chen Shu
College of Economics, Zhejiang University, Hangzhou, China.
School of Business and Management, Shanghai International Studies University, Shanghai, China.
Front Psychol. 2018 Aug 20;9:1321. doi: 10.3389/fpsyg.2018.01321. eCollection 2018.
Neuroimaging studies have indicated a correlation between dorsolateral prefrontal cortex (DLPFC) activity and deceptive behavior. We applied a transcranial direct current stimulation (tDCS) device to modulate the activity of subjects' DLPFCs. Causal evidence of the neural mechanism of deception was obtained. We used a between-subject design in a signaling framework of deception, in which only the sender knew the associated payoffs of two options. The sender could freely choose to convey the truth or not, knowing that the receiver would never know the actual payment information. We found that males were more honest than females in the sham stimulation treatment, while such gender difference disappeared in the right anodal/left cathodal stimulation treatment, because modulating the activity of the DLPFC using right anodal/left cathodal tDCS only significantly decreased female subjects' deception.
神经影像学研究表明，背外侧前额叶皮层（DLPFC）活动与欺骗行为之间存在关联。我们应用经颅直流电刺激（tDCS）设备来调节受试者DLPFC的活动。获得了欺骗神经机制的因果证据。我们在欺骗的信号框架中采用了组间设计，其中只有发送者知道两个选项的相关收益。发送者可以自由选择是否传达真相，因为知道接收者永远不会知道实际的支付信息。我们发现，在假刺激治疗中男性比女性更诚实，而在右侧阳极/左侧阴极刺激治疗中这种性别差异消失了，因为使用右侧阳极/左侧阴极tDCS调节DLPFC的活动仅显著降低了女性受试者的欺骗行为。
