Department of Psychology, Royal Holloway University of London, Egham, UK; Brain and Behavioural Sciences Department, University of Pavia, Pavia, Italy.
Brain and Behavioural Sciences Department, University of Pavia, Pavia, Italy; Centre of Cognitive Neuropsychology, ASST Grande Ospedale Metropolitano, Niguarda Hospital, Milan, Italy.
Neuropsychologia. 2021 Sep 17;160:107965. doi: 10.1016/j.neuropsychologia.2021.107965. Epub 2021 Jul 22.
Risk-taking behaviour is an essential aspect of our interactions with the environment. Here we investigated whether vestibular inputs influence behavioural measurement of risk-taking propensity. We have combined bipolar Galvanic Vestibular Stimulation (GVS) with a well-known and established risk-taking behaviour task, namely the Balloon Analogue Risk Task (BART). A sham stimulation was used to control for non-specific effects. Left-anodal and right-cathodal GVS (L-GVS), which preferentially activates the vestibular projections in the right hemisphere, decreased the willingness to take risk during the BART compared with right-anodal and left-cathodal GVS (R-GVS), which activates the left hemisphere. This proved a specific vestibular effect which depends on GVS polarity. Conversely, no generic vestibular effect, defined as the adjusted average of L-GVS and R-GVS conditions compared to sham, emerged, excluding non-specific vestibular effects. Our results confirmed recent findings of a vestibular contribution to decision-making and strategy control behaviour. We suggest that the vestibular-mediated balancing of risk seeking behaviour is an important element of the brain's capacity to adapt to the environment.
冒险行为是我们与环境互动的一个重要方面。在这里，我们研究了前庭输入是否会影响风险倾向的行为测量。我们将双极电前庭刺激（GVS）与一个众所周知和成熟的风险行为任务，即气球模拟风险任务（BART）相结合。假刺激用于控制非特异性效应。左阳极和右阴极 GVS（L-GVS）优先激活右半球的前庭投射，与右阳极和左阴极 GVS（R-GVS）相比，降低了在 BART 中承担风险的意愿，R-GVS 激活左半球。这证明了一种特定的前庭效应，它取决于 GVS 的极性。相反，与假刺激相比，没有出现一般的前庭效应，定义为 L-GVS 和 R-GVS 条件的平均调整，排除了非特异性前庭效应。我们的结果证实了前庭对决策和策略控制行为的贡献的最新发现。我们认为，前庭介导的风险寻求行为平衡是大脑适应环境能力的一个重要组成部分。
Zotero 插件