Effects of a Brief Mindfulness-Based Attentional Intervention on Threat-Related Perceptual Decision-Making.
Effects of a Brief Mindfulness-Based Attentional Intervention on Threat-Related Perceptual Decision-Making.
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DOI：
10.1007/s12671-020-01562-9
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发表时间：
2021-04
期刊：
影响因子：
3.6
通讯作者：
Mohanty A
中科院分区：
文献类型：
--
作者：
Im S;Marder MA;Imbriano G;Sussman TJ;Mohanty A
与威胁相关的线索和背景有助于知觉决策，但尚不清楚这种由威胁驱动的知觉决策调整是否可以通过自上而下的注意控制来修改。由于状态和意志力与注意力控制的改善有关，我们研究了这些因素是否有助于利用先验知识来检测威胁性刺激。参与者被随机分配到基于正念的短暂干预(N=32)或物理讲座录音(N=31)，然后被要求执行一项任务，在这项任务中，他们使用威胁和中性线索来区分威胁和中性面孔。结果表明，威胁性线索会导致更快、更敏感的知觉决策，尤其是对威胁性面孔。此外，在接受了短暂正念诱导的组中，较高的倾向性正念水平与使用线索区分威胁性和中性刺激的能力提高有关，但在控制组中没有。我们的发现突显了自上而下与注意力相关的倾向和策略如何影响我们在环境中发现威胁的能力。
Threat-related cues and contexts facilitate perceptual decision-making, yet it is unclear whether this threat-driven tuning of perceptual decision-making is modifiable by top-down attentional control. Since state and dispositional mindfulness are linked to improved attentional control, we examined whether these factors assist the use of prior knowledge to detect threatening stimuli. Participants were randomly assigned to a brief mindfulness-based intervention (N=32) or a physics lecture audio recording (N=31) and then asked to perform a task in which they used threatening and neutral cues to discriminate between threatening and neutral faces. Results showed that threatening cues led to faster and more sensitive perceptual decision-making, specifically for threatening faces. Furthermore, higher levels of dispositional mindfulness were associated with improved ability to use cues to discriminate between threatening and neutral stimuli in the group that underwent a brief mindfulness induction but not in the control group. Our findings highlight how top-down attention-related dispositions and strategies can influence our ability to detect threats in our environment.
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