Adaptive behavioral control involves a balance between top-down persistence and flexible updating of goals under changing demands. According to the metacontrol state model (MSM), this balance emerges from the interaction between the frontal and the striatal dopaminergic system. The attentional blink (AB) task has been argued to tap into the interaction between persistence and flexibility, as it reflects overpersistence-the too-exclusive allocation of attentional resources to the processing of the first of two consecutive targets. Notably, previous studies are inconclusive about the association between the AB and noninvasive proxies of dopamine including the spontaneous eye blink rate (sEBR), which allegedly assesses striatal dopamine levels. We aimed to substantiate and extend previous attempts to predict individual sizes of the AB in two separate experiments with larger sample sizes (N = 71 & N = 65) by means of noninvasive behavioral and physiological proxies of dopamine (DA), such as sEBR and mood measures, which are likely to reflect striatal dopamine levels, and color discrimination, which has been argued to tap into the frontal dopamine levels. Our findings did not confirm the prediction that AB size covaries with sEBR, mood, or color discrimination. The implications of this inconsistency with previous observations are discussed.

中文翻译：

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注意眨眼和推定的非侵入性多巴胺标记：两项实验，以巩固可能的关联。

自适应行为控制涉及自上而下的持久性与不断变化的需求下目标的灵活更新之间的平衡。根据元控制状态模型（MSM），这种平衡来自额叶和纹状体多巴胺能系统之间的相互作用。有人提出注意力眨眼（AB）任务是利用持久性和灵活性之间的相互作用，因为它反映了过度持久性-过于排斥地将注意力资源分配给两个连续目标中的第一个目标的处理。值得注意的是，先前的研究尚不确定AB与多巴胺的非侵入性代理之间的联系，包括据称可评估纹状体多巴胺水平的自发眨眼率（sEBR）。我们旨在通过无创行为和生理学上的多巴胺（DA），例如sEBR和情绪测量可能反映纹状体多巴胺水平，而颜色歧视则被认为是利用额叶多巴胺水平。我们的发现并没有证实AB大小与sEBR，情绪或颜色歧视相关的预测。讨论了这种与先前观察结果不一致的含义。有人认为这可以利用额叶多巴胺的水平。我们的发现并没有证实AB大小与sEBR，情绪或颜色歧视有关的预测。讨论了这种与先前观察结果不一致的含义。有人认为这可以利用额叶多巴胺的水平。我们的发现并没有证实AB大小与sEBR，情绪或颜色歧视相关的预测。讨论了这种与先前观察结果不一致的含义。