The self is a multifaceted phenomenon that integrates information and experience across multiple time scales. How temporal integration on the psychological level of the self is related to temporal integration on the neuronal level remains unclear. To investigate temporal integration on the psychological level, we modified a well-established self-matching paradigm by inserting temporal delays. On the neuronal level, we indexed temporal integration in resting-state EEG by two related measures of scale-free dynamics, the power law exponent and autocorrelation window. We hypothesized that the previously established self-prioritization effect, measured as decreased response times or increased accuracy for self-related stimuli, would change with the insertion of different temporal delays between the paired stimuli, and that these changes would be related to temporal integration on the neuronal level. We found a significant self-prioritization effect on accuracy in all conditions with delays, indicating stronger temporal integration of self-related stimuli. Further, we observed a relationship between temporal integration on psychological and neuronal levels: higher degrees of neuronal integration, that is, higher power-law exponent and longer autocorrelation window, during resting-state EEG were related to a stronger increase in the self-prioritization effect across longer temporal delays. We conclude that temporal integration on the neuronal level serves as a template for temporal integration of the self on the psychological level. Temporal integration can thus be conceived as the "common currency" of neuronal and psychological levels of self.

译文

:自我是一个多方面的现象,它将跨多个时间尺度的信息和经验整合在一起。尚不清楚自我心理水平上的时间整合与神经元水平上的时间整合如何相关。为了研究心理上的时间整合,我们通过插入时间延迟来修改完善的自我匹配范式。在神经元水平上,我们通过无标度动力学的两个相关度量,幂律指数和自相关窗口来索引静止状态脑电图中的时间积分。我们假设先前建立的自我优先化效果(以减少响应时间或增加自我相关刺激的准确性来衡量)将随着配对刺激之间插入不同的时间延迟而发生变化,并且这些变化将与时间上的整合有关神经元水平。我们发现在所有条件下都有明显的自我优先级影响,存在延迟,这表明自我相关刺激的时间整合性更强。此外,我们观察到在心理和神经元水平上的时间整合之间的关系:在静息状态的脑电图期间,较高的神经元整合程度,即较高的幂律指数和较长的自相关窗口,与自我优先级的增强有关在较长的时间延迟中产生影响。我们得出的结论是,神经元水平的时间整合可作为心理水平上自我的时间整合的模板。因此,时间整合可以被认为是自我神经元和心理水平的“共同货币”。

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