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与惩罚相关的记忆引导注意:知觉调制的神经动力学。

Punishment-related memory-guided attention: Neural dynamics of perceptual modulation.

机构信息

Department of Clinical Psychology and Psychobiology, University of Santiago de Compostela, Santiago de Compostela, Spain.

Department of Experimental Psychology and Oxford Centre for Human Brain Activity, Department of Psychiatry, Wellcome Centre for Integrative Neuroimaging, University of Oxford, Oxford, United Kingdom.

出版信息

Cortex. 2019 Jun;115:231-245. doi: 10.1016/j.cortex.2019.01.029. Epub 2019 Feb 10.

Abstract

Remembering the outcomes of past experiences allows us to generate future expectations and shape selection in the long-term. A growing number of studies has shown that learned positive reward values impact spatial memory-based attentional biases on perception. However, whether memory-driven attentional biases extend to punishment-related values has received comparatively less attention. Here, we manipulated whether recent spatial contextual memories became associated with successful avoidance of punishment (potential monetary loss). Behavioral and electrophysiological measures were collected from 27 participants during a subsequent memory-based attention task, in which we tested for the effect of punishment avoidance associations. Punishment avoidance significantly amplified effects of spatial contextual memories on visual search processes within natural scenes. Compared to non-associated scenes, contextual memories paired with punishment avoidance lead to faster responses to targets presented at remembered locations. Event-related potentials elicited by target stimuli revealed that acquired motivational value of specific spatial locations, by virtue of their association with past avoidance of punishment, dynamically affected neural signatures of early visual processing (indexed by larger P1 and earlier N1 potentials) and target selection (as indicated by reduced N2pc potentials). The present results extend our understanding of how memory, attention, and punishment-related mechanisms interact to optimize perceptual decision in real world environments.

摘要

记住过去的经验可以让我们产生未来的期望,并在长期内塑造选择。越来越多的研究表明,学习到的积极奖励价值会影响基于空间记忆的注意力偏向感知。然而,记忆驱动的注意力偏向是否会扩展到与惩罚相关的价值,这方面的关注相对较少。在这里,我们操纵了最近的空间上下文记忆是否与成功避免惩罚(潜在的货币损失)相关联。在随后的基于记忆的注意力任务中,我们从 27 名参与者那里收集了行为和电生理测量结果,以测试惩罚回避关联的影响。惩罚回避显著放大了空间上下文记忆对自然场景中视觉搜索过程的影响。与非关联场景相比,与惩罚回避相关联的上下文记忆会导致对记忆位置呈现的目标更快做出反应。由目标刺激引发的事件相关电位表明,特定空间位置的习得动机价值,由于它们与过去避免惩罚的关联,会动态影响早期视觉处理的神经特征(由更大的 P1 和更早的 N1 电位表示)和目标选择(表现为 N2pc 电位降低)。本研究结果扩展了我们对记忆、注意力和与惩罚相关的机制如何相互作用以优化现实环境中感知决策的理解。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf53/6525146/6feeb0d2f82d/gr1.jpg

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