Department of Psychology, University of Bern, 3012, Bern, Switzerland.
Center for Cognition Learning and Memory, University of Bern, 3012, Bern, Switzerland.
Sci Rep. 2017 Jun 7;7(1):2947. doi: 10.1038/s41598-017-02909-4.
Recent research provides evidence that galvanic vestibular stimulation (GVS) has a modulating effect on somatosensory perception and spatial cognition. However, other vestibular stimulation techniques have induced changes in affective control and decision making. The aim of this study was to investigate the effect of GVS on framing susceptibility in a risky-choice game. The participants were to decide between a safe and a risky option. The safe option was framed either positively or negatively. During the task, the participants were exposed to either left anodal/right cathodal GVS, right anodal/left cathodal GVS, or sham stimulation (control condition). While left anodal/right cathodal GVS activated more right-hemispheric vestibular brain areas, right anodal/left cathodal GVS resulted in more bilateral activation. We observed increased framing susceptibility during left anodal/right cathodal GVS, but no change in framing susceptibility during right anodal/left cathodal GVS. We propose that GVS results in increased reliance on the affect heuristic by means of activation of cortical and subcortical vestibular-emotional brain structures and that this effect is modulated by the lateralization of the vestibular cortex.
最近的研究提供了证据，证明电前庭刺激（GVS）对躯体感觉感知和空间认知具有调节作用。然而，其他前庭刺激技术已经引起了情感控制和决策的变化。本研究的目的是探讨 GVS 对风险选择游戏中框架易感性的影响。参与者需要在安全选项和风险选项之间做出选择。安全选项以积极或消极的方式呈现。在任务期间，参与者接受左阳极/右阴极 GVS、右阳极/左阴极 GVS 或假刺激（对照条件）。虽然左阳极/右阴极 GVS 激活了更多的右半球前庭脑区，但右阳极/左阴极 GVS 导致了更双侧的激活。我们观察到在左阳极/右阴极 GVS 期间框架易感性增加，但在右阳极/左阴极 GVS 期间框架易感性没有变化。我们提出，GVS 通过激活皮质和皮质下前庭情绪脑结构，导致对情感启发式的依赖增加，而这种影响受到前庭皮质的偏侧化调节。
