奖励调节的注意力部署是由抑制驱动的,而不是注意力捕获.
Emily D Taylor1, Tobias Feldmann-Wüstefeld2
1School of Psychology, University of Southampton, Southampton, UK.
NeuroImage
|September 5, 2024
概括
高价值的分心干扰视觉搜索,要求更多的抑制,而不是捕捉. 增加对有价值的刺激的抑制有助于防止在视觉搜索任务中注意力捕获.
科学领域:
- 认知神经科学 认知神经科学
- 视觉注意力 视觉注意力
- 奖励处理 奖励处理
背景情况:
- 通过经验学到的刺激价值会影响注意力.
- 在视觉搜索任务中,高奖励的干扰因素会导致干扰,导致更长的响应时间和更低的准确性.
- 价值驱动的注意力背后的神经机制,特别是增强,捕获和抑制的作用,仍然不清楚.
研究的目的:
- 在视觉搜索过程中调查价值驱动的注意部署的神经机制.
- 为了确定来自高回报的干扰是由于对目标的增强处理,被干扰器捕捉注意力,或干扰器的抑制.
- 检查分心值,空间近距离和注意力过程之间的相互作用.
主要方法:
- 在视觉搜索任务中复制奖励诱导干扰的行为发现.
- 从EEG信号中分析与事件相关的潜力 (ERP),以评估神经活动.
- 测量了分心奖励值和空间接近对行为表现和Pd和N2pc等神经元件的影响.
主要成果:
- 随着分心器与目标的接近程度的增加,行为表现下降,高奖励分心器的梯度更.
- 高奖励的干扰器引发了更大的PD组件,表明抑制需求增加,特别是接近目标的干扰器.
- 目标-N2pc振幅被目标附近的高回报干扰器减少,这表明分配给目标的注意力资源较少.
- 干扰器-N2pc,反映了注意力捕捉,不受奖励或距离的影响.
结论:
- 价值驱动的注意干扰主要来自于抑制高价值分心的需求增加,而不是注意力捕获.
- 有效地抑制高价值刺激对于防止不必要的注意力捕获和保持高效的视觉搜索至关重要.
- 这些发现阐明了奖励价值如何调节注意力的神经基础,并突出了抑制在管理竞争刺激中的关键作用.
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