本研究的主要目的是藉由行為與事件相關腦電波(event-related brain potential, ERP)證據如錯誤相關負波(error related negativity, ERN)和錯誤正波(error positivity, Pe)來探討睡眠片斷化對錯誤監控運作(error monitoring)的影響，包括對錯誤偵測(error detection;由ERN振幅代表)、錯誤知覺(error awareness;由Pe振幅代表)及錯誤反應後行為調整(post-error behavioral adjustments)的影響。共有14位實驗參與者，7位男性、7位女性，年齡介於20-23歲參與實驗。每位實驗參與者分別在低睡眠干擾與高睡眠干擾後進行箭頭版的旁側夾擊作業(flanker task)並同時記錄腦波訊號(electroencephalogram, EEG)。行為實驗結果發現：實驗參與者在整晚高睡眠干擾後呈現錯誤後行為調整的弱化。ERP結果顯示：高睡眠干擾後ERN振幅不受影響，而Pe振幅顯著變小。相關分析結果顯示：兩種睡眠干擾情境下睡眠第一期總量差異、腦波覺醒指數差異分別和Pe振幅差異呈負相關；而睡眠第三期總量差異則和Pe振幅差異呈正相關。綜上所述，睡眠片斷化對錯誤知覺歷程的弱化可能涉及腦波覺醒和睡眠階段的改變。未來可針對不同睡眠階段如何影響錯誤監控運作做更進一步的探討和釐清。

In the present study, we used the flanker task and the event-related brain potential (ERP) recording technique to explore the effect of sleep fragmentation on error monitoring, including error detection (indicated by the ERP component, error-related negativity, ERN), error awareness (reflected by the ERP component, error positivity, Pe) and post-error behavioral adjustments. A total of fourteen participants (seven women, seven men) with age ranging from 20-23 years completed the experiment. All participants performed an arrow version of flanker task and underwent electroencephalographic (EEG) recordings after a low sleep fragmentation (LSF) night and a high sleep fragmentation (HSF) night. The behavioral data show: HSF reduced post-error behavioral adjustments. The ERP data show: the amplitude of the Pe was significantly reduced following HSF night, but the ERN amplitude was not significantly changed. The amount of N1 sleep and arousal differences between the two sleep fragmentation conditions was negatively correlated with Pe amplitude differences, i.e., the more N1 sleep and arousal increased in the HSF night, the more Pe amplitude was reduced. By contrast, the amount of N3 sleep differences between the two sleep fragmentation conditions was positively correlated with Pe amplitude differences, i.e., the more N3 sleep was decreased in the HSF night, the more Pe amplitude was reduced. Taken together, these results suggest that sleep fragmentation weakened error awareness and post-error behavioral adjustments and these effects might be related to changes in sleep structure. Further researches are needed to verify which sleep stages are functionally related to error monitoring.

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