Social Psychology Department, University of Amsterdam, Amsterdam, The Netherlands.
Amsterdam Brain and Cognition Centre (ABC), Amsterdam, The Netherlands.
Sci Rep. 2020 Sep 17;10(1):15291. doi: 10.1038/s41598-020-71662-y.
People often seek out stories, videos or images that detail death, violence or harm. Considering the ubiquity of this behavior, it is surprising that we know very little about the neural circuits involved in choosing negative information. Using fMRI, the present study shows that choosing intensely negative stimuli engages similar brain regions as those that support extrinsic incentives and "regular" curiosity. Participants made choices to view negative and positive images, based on negative (e.g., a soldier kicks a civilian against his head) and positive (e.g., children throw flower petals at a wedding) verbal cues. We hypothesized that the conflicting, but relatively informative act of choosing to view a negative image, resulted in stronger activation of reward circuitry as opposed to the relatively uncomplicated act of choosing to view a positive stimulus. Indeed, as preregistered, we found that choosing negative cues was associated with activation of the striatum, inferior frontal gyrus, anterior insula, and anterior cingulate cortex, both when contrasting against a passive viewing condition, and when contrasting against positive cues. These findings nuance models of decision-making, valuation and curiosity, and are an important starting point when considering the value of seeking out negative content.
人们经常寻找详细描述死亡、暴力或伤害的故事、视频或图像。考虑到这种行为的普遍性,我们对涉及选择负面信息的神经回路知之甚少,这令人惊讶。本研究使用 fMRI 表明,选择强烈的负面刺激会激活支持外在激励和“常规”好奇心的大脑区域。参与者根据负面(例如,一名士兵踢平民的头部)和正面(例如,孩子们向婚礼上扔花瓣)的口头提示做出观看负面和正面图像的选择。我们假设,选择观看负面图像的行为是一种相互冲突但信息相对丰富的行为,因此与选择观看正面刺激的行为相比,奖励回路的激活更强。实际上,正如预先注册的那样,我们发现,当与被动观看条件相比时,选择负面线索与纹状体、下额叶回、前岛叶和前扣带皮层的激活有关,当与正面线索相比时也是如此。这些发现细微地调整了决策、估值和好奇心的模型,并且在考虑寻求负面内容的价值时,是一个重要的起点。