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題名 | 慢性疲勞症候群患者的事件相關電位=An Event-related Potentials Study of Patients with Chronic Fatigue Syndrome |
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作者 | 劉銘雄; 楊建銘; 謝明慧; 吳至行; | 書刊名 | 臺灣精神醫學 |
卷期 | 17:2 2003.06[民92.06] |
頁次 | 頁102-109 |
分類號 | 415.84 |
關鍵詞 | 慢性疲勞症候群; 事件相關電位; 警覺作業; Chronic fatigue syndrome; P300; Event-related potentials; Vigilance task; |
語文 | 中文(Chinese) |
中文摘要 | 目的:慢性疲勞(Chronic fatigue syndrome, CFS) 是一種主訴為疲勞,但是無法以其他醫療因素來解釋的疾病。患者經常抱怨廣泛的認知功能受損,但在客觀的神經心理測驗的發現並不一致。本研究想經由事件相關電位(Event-related potentials, ERPs) 的測量來了解CFS 患者在從事較長時間認知活動時訊息處理上是否有問題。 方法:本研究分別以10 名CFS 患者及9 名健康受試者為研究對象,測量他們進行較長時間(約30 分鐘)的警覺作業(Vigilance Test)時的P300 波形,以評估CFS 患者在進行該作業時的認知資源或訊息處理速度是否有別於健康受試者。 結果: ERPs 的分析上CFS 患者的P300 振幅及區域面積小於健康受試者,但CFS 和健康受試者在正確率及反應時間上沒有顯著差異。 結論:CFS 患者在中線位置(Fz, Cz, Pz) P300 的振幅及區域面積上小於健康受試者,顯示患者在tonic arousal 低於健康受試者。 |
英文摘要 | Objective: Chronic fatigue syndrome (CFS) is characterized by medically unexplained debilitating fatigue. Although patients with CFS usually report a wide range of cognitive complaints, neuropsychological studies typically reveal only mild dysfunctions. This study evaluated neurophysiological evidence for cognitive dysfunction based on event-related potentials (ERPs) during a prolonged cognitive task in CFS patients. Methods: ERPs were recorded in 10 patients with CFS and 9 healthy controls while they performed a 30-minute vigilance task. The task was to press a button when a target stimulus and to ignore a non-target stimulus presented on a computer screen. P300 peak amplitude, area measure, and latency, as well as accuracy and reaction time were evaluated. Results: The amplitude and area measure of P300 were significantly lower in patients with CFS compared to healthy controls. No difference in accuracy or reaction time was found between the two groups. Conclusion: The P300 amplitude and area measure of patients with CFS tends to be smaller across electrode sites, implying the presence of a lower tonic arousal. |
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