An auditory brain-computer interface (BCI)
An auditory brain-computer interface (BCI)
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DOI：
10.1016/j.jneumeth.2007.02.009
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发表时间：
2008-01-15
影响因子：
3
通讯作者：
Kuebler, Andrea
中科院分区：
文献类型：
--
作者：
Nijboer, Femke;Furdea, Adrian;Kuebler, Andrea
脑机接口（bci）将大脑活动转化为控制外部设备的信号。基于视觉刺激的脑机接口可以维持严重瘫痪患者的交流，但前提是视力完好。然而，使人衰弱的神经系统疾病可能导致完整视力的丧失。本研究探讨了听觉脑机接口的可行性。16名健康志愿者参加了三组训练，每组30 -3分钟，在训练中他们学会了增加或减少脑电图的感觉运动节律（SMR）振幅。一半的参与者得到了视觉反馈，另一半得到了听觉反馈。在每次治疗前，对受试者的情绪和动机进行评估。虽然视觉反馈组的脑机接口表现优于听觉反馈组，但在第三次治疗结束时，脑机接口表现没有差异。听觉反馈组的参与者学习速度较慢，但与视觉反馈组相比，8人中有4人在最后一次学习中达到了70%以上的正确率。视觉反馈组中一些参与者的表现下降与情绪和动机有关。我们的结论是，如果训练时间足够，听觉脑机接口可能与视觉脑机接口一样有效。情绪和动机在学习使用脑机接口中起着重要作用。(C) 2007 Elsevier B.V.版权所有
Brain-computer interfaces (BCIs) translate brain activity into signals controlling external devices. BCIs based on visual stimuli can maintain communication in severely paralyzed patients, but only if intact vision is available. Debilitating neurological disorders however, may lead to loss of intact vision. The current study explores the feasibility of an auditory BCI. Sixteen healthy volunteers participated in three training sessions consisting of 30 2-3 min runs in which they learned to increase or decrease the amplitude of sensorimotor rhythms (SMR) of the EEG. Half of the participants were presented with visual and half with auditory feedback. Mood and motivation were assessed prior to each session. Although BCI performance in the visual feedback group was superior to the auditory feedback group there was no difference in performance at the end of the third session. Participants in the auditory feedback group learned slower, but four out of eight reached an accuracy of over 70% correct in the last session comparable to the visual feedback group. Decreasing performance of some participants in the visual feedback group is related to mood and motivation. We conclude that with sufficient training time an auditory BCI may be as efficient as a visual BCI Mood and motivation play a role in learning to use a BCI. (C) 2007 Elsevier B.V. All rights reserved.