Proprioceptive feedback and brain computer interface (BCI) based neuroprostheses.
Proprioceptive feedback and brain computer interface (BCI) based neuroprostheses.
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DOI：
10.1371/journal.pone.0047048
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发表时间：
2012
期刊：
影响因子：
3.7
通讯作者：
Birbaumer N
中科院分区：
文献类型：
--
作者：
Ramos-Murguialday A;Schürholz M;Caggiano V;Wildgruber M;Caria A;Hammer EM;Halder S;Birbaumer N
脑机接口（BCI）技术已被提出用于运动神经康复、运动替代和辅助技术。本体感觉反馈是否影响大脑振荡的调节，从而影响脑机接口的控制，这是一个悬而未决的问题。我们开发了一个与机械手外骨骼在线耦合的脑机接口，用于弯曲和伸展手指。24名健康的参与者执行了五种不同的手闭合和张开任务：(1)没有任何明显运动和没有反馈的手运动图像，(2)运动图像作为在线反馈（参与者看到和感觉到他们的手，外骨骼根据他们的大脑信号移动），(3)被动（矫形器被动地打开和闭合手，没有图像）和(4)主动（明显）手的运动和休息。表现被定义为运动任务和休息时感觉运动节律功率的差异，并在不同任务下离线计算。根据任务2中收到的反馈，参与者被分为三组（其他任务对所有参与者都是一样的）。组1 （n = 9）接受偶发正反馈（参与者的感觉运动节奏（SMR）不同步与手部矫形器运动直接相关），组2 （n = 8）接受偶发“负”反馈（参与者的感觉运动节奏同步与手部矫形器运动直接相关），组3 （n = 7）接受假反馈（大脑振荡与矫形器运动无关联）。我们观察到本体感觉反馈（感觉和看到手部运动）显著改善脑机接口的表现。此外，在没有及时反馈的情况下，偶然积极组仅观察到显著的运动学习效应增强了运动想象时的SMR失同步。此外，我们观察到在主动和被动运动中，偶然积极组的SMR不同步明显强于其他组。总之，我们证明了在运动任务中使用偶然的正本体感觉反馈BCI增强了SMR的去同步化。
Brain computer interface (BCI) technology has been proposed for motor neurorehabilitation, motor replacement and assistive technologies. It is an open question whether proprioceptive feedback affects the regulation of brain oscillations and therefore BCI control. We developed a BCI coupled on-line with a robotic hand exoskeleton for flexing and extending the fingers. 24 healthy participants performed five different tasks of closing and opening the hand: (1) motor imagery of the hand movement without any overt movement and without feedback, (2) motor imagery with movement as online feedback (participants see and feel their hand, with the exoskeleton moving according to their brain signals, (3) passive (the orthosis passively opens and closes the hand without imagery) and (4) active (overt) movement of the hand and rest. Performance was defined as the difference in power of the sensorimotor rhythm during motor task and rest and calculated offline for different tasks. Participants were divided in three groups depending on the feedback receiving during task 2 (the other tasks were the same for all participants). Group 1 (n = 9) received contingent positive feedback (participants' sensorimotor rhythm (SMR) desynchronization was directly linked to hand orthosis movements), group 2 (n = 8) contingent “negative” feedback (participants' sensorimotor rhythm synchronization was directly linked to hand orthosis movements) and group 3 (n = 7) sham feedback (no link between brain oscillations and orthosis movements). We observed that proprioceptive feedback (feeling and seeing hand movements) improved BCI performance significantly. Furthermore, in the contingent positive group only a significant motor learning effect was observed enhancing SMR desynchronization during motor imagery without feedback in time. Furthermore, we observed a significantly stronger SMR desynchronization in the contingent positive group compared to the other groups during active and passive movements. To summarize, we demonstrated that the use of contingent positive proprioceptive feedback BCI enhanced SMR desynchronization during motor tasks.
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DOI：
10.1682/jrrd.2005.06.0103
发表时间：
2006-08-01
影响因子：
--
作者：
Hogan, Neville;Krebs, Hermano I.;Volpe, Bruce T.
通讯作者：
Volpe, Bruce T.
影响因子：
9.8
作者：
Ganguly K;Carmena JM
通讯作者：
Carmena JM
影响因子：
3
作者：
Nijboer, Femke;Furdea, Adrian;Kuebler, Andrea
通讯作者：
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影响因子：
8.3
作者：
Buch, Ethan;Weber, Cornelia;Birbaumer, Niels
通讯作者：
Birbaumer, Niels
DOI：
10.1109/tnsre.2005.850423
发表时间：
2005-09-01
影响因子：
4.9
作者：
Dipietro, L;Ferraro, M;Hogan, N
通讯作者：
Hogan, N