复测慢性膝关节疼痛老年患者脑电α波段振荡的再测试可靠性和内部一致性。
Re-test reliability and internal consistency of EEG alpha-band oscillations in older adults with chronic knee pain.
机构信息
Institute on Aging, University of Florida, FL, USA; Pain Research and Intervention Center of Excellence, University of Florida, FL, USA; Department of Psychology, University of Florida, FL, USA.
Institute on Aging, University of Florida, FL, USA; Pain Research and Intervention Center of Excellence, University of Florida, FL, USA.
出版信息
Clin Neurophysiol. 2020 Nov;131(11):2630-2640. doi: 10.1016/j.clinph.2020.07.022. Epub 2020 Aug 26.
OBJECTIVE
Chronic pain studies investigating the ability to detect sensory processing differences related to thalamic gating using electroencephalographic (EEG) alpha have yielded conflicting results. Alpha's basic psychometric properties in pain populations requires further study. The present study reports on the test-retest reliability and internal consistency of EEG alpha power in older adults with chronic knee pain.
METHODS
Repeated EEG alpha power measurements were taken of older adults (N = 31) with chronic knee pain across two sessions separated by a ten-day period associated with a pilot clinical trial study. Recordings included resting periods (eyes open and eyes closed) as well as periods involving a pain management activity.
RESULTS
Most single alpha-power measures and all within-participant averages of alpha obtained within a session showed high internal consistency (Cronbach's α > 0.7) and satisfactory-to-excellent re-test reliability (Pearson's rs > 0.6) of both alpha power and alpha blocking (eyes closed minus eyes open) across repeated conditions.
CONCLUSIONS
EEG alpha power seems mostly reliable and consistent, particularly when participants' eyes are closed, after a period of habituation, and when alpha measures are averaged as within-participant estimates.
SIGNIFICANCE
This analysis suggests that within-subject averages of EEG alpha are the most reliable for developing indices of chronic knee pain.
目的
使用脑电图（EEG）α 研究慢性疼痛，以调查与丘脑门控相关的感觉处理差异的检测能力，其研究结果相互矛盾。α 在疼痛人群中的基本心理测量特性需要进一步研究。本研究报告了慢性膝痛老年人群中 EEGα 功率的重测信度和内部一致性。
方法
在一项与试点临床试验相关的为期十天的两个阶段中，对患有慢性膝痛的老年人（N=31）进行了重复的 EEGα 功率测量。记录包括休息期（睁眼和闭眼）以及涉及疼痛管理活动的时期。
结果
大多数单 α 功率测量值和在一个会话中获得的所有参与者内平均 α 均表现出较高的内部一致性（Cronbach 的 α>0.7）和令人满意到极好的重测可靠性（Pearson 的 rs>0.6），无论是在重复条件下的 α 功率还是 α 阻断（闭眼减去睁眼）。
结论
EEGα 功率似乎是可靠且一致的，尤其是当参与者闭眼时、在一段时间的习惯形成后，以及当α 测量值作为参与者内估计值进行平均时。
意义
该分析表明，EEGα 的受试者内平均值最适合开发慢性膝痛指数。
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