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Neural Adaptation to a Working Memory Task: A Concurrent EEG-fNIRS Study

机译：神经适应工作记忆任务：一项同时的EEG-fNIRS研究

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Simultaneously recorded electroencephalography (EEG) and functional near infrared spectroscopy (fNIRS) measures from sixteen subjects were used to assess neural correlates of a letter based n-back working memory task. We found that EEG alpha power increased and prefrontal cortical oxygenation decreased with increased practice time for the high memory load condition (2-back), suggesting lower brain activation and a tendency toward the 'idle' state. The cortical oxygenation changes for the low memory load conditions (0-back and 1-back) changed very little throughout the training session which the behavioral scores showed high accuracy and a ceiling effect. No significant effect of practice time were found for theta power or the behavioral performance measures.
机译：同时记录的脑电图（EEG）和功能性近红外光谱（fNIRS）的方法来自16位受试者，用于评估基于字母的n背工作记忆任务的神经相关性。我们发现，在高记忆负荷情况下（2-back），随着练习时间的增加，脑电图alpha功率增加而前额皮层氧合减少，这表明较低的大脑激活能力和向“空闲”状态的趋势。在整个训练过程中，低记忆负荷条件（0背和1背）的皮层充氧变化几乎没有变化，行为评分显示出较高的准确性和上限效应。没有发现练习时间对theta power或行为表现量度有显着影响。

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