Psychophysiological Measurements in a Biocooperative Feedback Loop for Upper Extremity Rehabilitation
Psychophysiological Measurements in a Biocooperative Feedback Loop for Upper Extremity Rehabilitation
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DOI：
10.1109/tnsre.2011.2160357
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发表时间：
2011-08-01
影响因子：
4.9
通讯作者：
Munih, Marko
中科院分区：
文献类型：
--
作者：
Novak, Domen;Mihelj, Matjaz;Munih, Marko
本文探讨了心理生理测量在调节上肢康复任务难度的生物合作反馈回路中的有用性。心理生理学测量（心率、皮肤电导、呼吸和皮肤温度）既可以单独使用，也可以与任务表现和生物力学结合使用。采用判别分析对数据进行融合，并实现了一种特殊的自适应版本，可以逐步适应某一主题。健康受试者和偏瘫患者都参加了这项研究。生物合作控制器的准确度定义为它符合受试者偏好的次数百分比。任务表现的准确率最高（健康受试者和患者均约为82%），心理生理测量的准确率相对较低（约为60%）。适应性方法将健康受试者的心理生理测量准确度提高到76.4%，患者提高到68.8%。将心理生理学与任务表现相结合，健康受试者的准确率为84.7%，患者的准确率为89.4%。结果表明，心理生理测量作为运动康复的主要数据来源并不可靠，但可以提供补充信息。然而，额外信息的数量是否证明增加系统的复杂性是值得怀疑的。
This paper examines the usefulness of psychophysiological measurements in a biocooperative feedback loop that adjusts the difficulty of an upper extremity rehabilitation task. Psychophysiological measurements (heart rate, skin conductance, respiration, and skin temperature) were used both by themselves and in combination with task performance and biomechanics. Data fusion was performed with discriminant analysis, and a special adaptive version was implemented that can gradually adapt to a subject. Both healthy subjects and hemiparetic patients participated in the study. The accuracy of the biocooperative controller was defined as the percentage of times it matched the subjects' preferences. The highest accuracy rate was obtained for task performance (approximately 82% for both healthy subjects and patients), with psychophysiological measurements yielding relatively low accuracy (approximately 60%). The adaptive approach increased accuracy of psychophysiological measurements to 76.4% for healthy subjects and 68.8% for patients. Combining psychophysiology with task performance yielded an accuracy rate of 84.7% for healthy subjects and 89.4% for patients. Results suggest that psychophysiological measurements are not reliable as a primary data source in motor rehabilitation, but can provide supplementary information. However, it is questionable whether the amount of additional information justifies the increased complexity of the system.