Wheelock Justin R, Long Nicole M
Department of Psychology, University of Virginia, Charlottesville, VA, USA.
Commun Psychol. 2024 Dec 19;2(1):121. doi: 10.1038/s44271-024-00165-7.
Memory encoding and retrieval constitute neurally dissociable brain states and prior behavioral work suggests that these states may linger in time. Thus memory states may influence both the current experience and subsequent events; however, this account has not been directly tested. To test the hypothesis that memory judgments induce brain states that persist for several hundred milliseconds, we recorded scalp electroencephalography while participants completed a recognition task. We used an independently validated multivariate mnemonic state classifier to assess memory state engagement. We replicate previous behavioral findings, yet we find that memory states are modulated by response congruency. We find strong retrieval state engagement on incongruent trials, when the response switches between two consecutive trials. These findings indicate that cortical brain states are influenced by prior judgments and suggest that a non-mnemonic, internal attention state may be recruited in the face of changing demands in a dynamic environment.
记忆编码和提取构成了神经上可分离的脑状态，先前的行为研究表明这些状态可能会在时间上持续存在。因此，记忆状态可能会影响当前的体验和后续事件；然而，这一观点尚未得到直接验证。为了检验记忆判断会诱发持续数百毫秒的脑状态这一假设，我们在参与者完成识别任务时记录了头皮脑电图。我们使用了一个经过独立验证的多变量记忆状态分类器来评估记忆状态的参与情况。我们重复了先前的行为研究结果，但发现记忆状态会受到反应一致性的调节。我们发现在不一致的试验中，即当两个连续试验之间的反应发生切换时，会有强烈的提取状态参与。这些发现表明，皮层脑状态会受到先前判断的影响，并表明在动态环境中面对不断变化的需求时，可能会调用一种非记忆性的内部注意状态。
