Enhanced Neurobehavioral Outcomes of Action Observation Prosthesis Training.
Enhanced Neurobehavioral Outcomes of Action Observation Prosthesis Training.
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DOI：
10.1177/1545968315606992
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发表时间：
2016-07
影响因子：
4.2
通讯作者：
Wheaton LA
中科院分区：
文献类型：
--
作者：
Cusack WF;Thach S;Patterson R;Acker D;Kistenberg RS;Wheaton LA
以前的研究已经证明，与完整的肢体（不匹配的肢体）相比，当假肢使用者通过模仿假肢使用者（匹配的肢体）的运动来学习特定于任务的行为时，神经行为结果得到了改善。这项研究是第一个使用一个独特的神经生理学和任务性能的方法相结合，从认知运动控制的角度来研究假肢设备的训练策略。完整的非截肢假肢使用者（NAPU）戴上专门改装的假肢装置，以模拟经桡动脉肢体缺失者的手腕和前臂运动。假设是，与使用不匹配肢体训练的同行相比，使用匹配肢体模仿训练的NAPU将显示出更大的顶额区参与度和更低的运动变异性。训练持续了三天，包括交替的视频演示观察和动作模仿。在训练方案的开始和结束时，参与者进行了一个线索运动范式，同时收集脑电图和电测角术，分别跟踪皮层活动和运动变异性的变化。匹配的肢体参与者表现出更大的参与运动相关领域，而不匹配的肢体参与者表现出更大的参与顶枕系统。匹配肢体的参与者也表现出较低的运动变异性。这些结果表明，模仿的肢体类型影响神经和行为策略的新型假肢设备的使用。这一发现是重要的，因为传统的假肢康复与完整的治疗师涉及不匹配的肢体模仿，可能会加剧挑战，适应新的运动模式所要求的假肢使用。
Previous studies have demonstrated improved neurobehavioral outcomes when prosthesis users learn task-specific behaviors by imitating movements of prosthesis users (matched limb) compared to intact limbs (mismatched limb). This study is the first to use a unique combination of neurophysiological and task performance methods to investigate prosthetic device training strategies from a cognitive motor control perspective. Intact non-amputated prosthesis users (NAPUs) donned specially adapted prosthetic devices to simulate the wrist and forearm movement that persons with transradial limb loss experience. The hypothesis is that NAPUs trained with matched limb imitation would show greater engagement of parietofrontal regions and reduced movement variability compared to their counterparts trained with a mismatched limb. Training elapsed over three days comprised of alternating periods of video demonstration observation followed by action imitation. At the beginning and end of the training protocol, participants performed a cued movement paradigm while electroencephalography and electrogoniometry were collected to track changes in cortical activity and movement variability, respectively. Matched limb participants showed greater engagement of motor-related areas while mismatched limb participants showed greater engagement of the parietooccipital system. Matched limb participants also showed lower movement variability. These results indicate that the type of limb imitated influences neural and behavioral strategies for novel prosthetic device usage. This finding is important, as customary prosthetic rehabilitation with intact therapists involves mismatched limb imitation that may exacerbate challenges in adapting to new motor patterns demanded by prosthesis use.