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Brain responses to repeated visual experience among low and high sensation seekers: Role of boredom susceptibility

机译:低和高感觉寻求者对重复视觉体验的大脑反应:无聊感的作用

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摘要

To better understand individual differences in sensation seeking and its components, including boredom susceptibility and experience seeking, we examined brain responses of high and low sensation seekers during repeated visual experience. Individuals scoring in the top and bottom quartiles from a college-aged population on the Brief Sensation-Seeking Scale (BSSS) participated in an event-related potentials (ERPs) experiment. Line drawings of common objects were randomly intermixed and presented 1-3 times. Sixty-four channel ERP responses were recorded while participants classified items as "man-made" or "not man-made" in a repetition priming task. The two groups showed different ERP responses at frontal electrode sites after seeing a visual stimulus for 400-800 ms. The frontal late positive components (LPC) showed different habituation of ERP responses to new and studied repeated objects between high and low sensation seekers. Source localization analysis (LORETA) indicated that during visual stimulus adaptation the ventral pre-frontal cortex showed lack of frontal involvement among high sensation seekers. Furthermore, frontal LPC latencies during repeated visual exposure correlated with boredom susceptibility and experience seeking subscales. The distinct profiles of brain responses to repeated visual experience in high and low sensation seekers provide evidence that individual differences in neural adaptation can be linked to personality dimensions.
机译:为了更好地理解感觉寻求及其组成部分(包括无聊感和经验寻求)的个体差异,我们在反复的视觉体验中检查了高和低感觉寻求者的大脑反应。在短暂感觉寻求量表(BSSS)上从大学年龄人群的最高和最低四分位数中得分的个人参加了事件相关电位(ERP)实验。常见对象的线条图随机混合并显示1-3次。记录了64通道的ERP响应,而参与者在重复启动任务中将项目归类为“人造”或“非人造”。两组在视觉刺激下持续400-800毫秒后,在额电极部位显示出不同的ERP反应。额叶晚期阳性成分(LPC)显示ERP对新的和研究过的重复对象在高和低感寻求者之间的反应习惯不同。来源定位分析(LORETA)表明,在视觉刺激适应过程中,腹侧前额叶皮层显示出在高敏感度寻求者中缺乏额叶的参与。此外,在反复视觉暴露过程中额叶LPC潜伏期与无聊感和寻求分量表的经历相关。在高和低感觉寻求者中,大脑对重复视觉体验的反应的不同特征提供了证据,表明神经适应的个体差异可以与人格维度相关联。

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