Implementation of a beamforming technique in real-time magnetoencephaloghraphy
Implementation of a beamforming technique in real-time magnetoencephaloghraphy
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波束形成技术在实时脑磁图中的实现
DOI：
10.1142/s0219635213500192
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发表时间：
2013
影响因子：
1.8
通讯作者：
K. Kansaku
中科院分区：
文献类型：
--
作者：
H. Ora;K. Takano;T. Kawase;S. Iwaki;L. Parkkonen;K. Kansaku
实时脑磁图(RtMEG)是一种新兴的神经反馈技术，可能会使基础和临床神经科学的多个领域受益。在本研究中，我们在rtMEG系统中实现了基于体素的实时相干性测量，在该系统中，我们使用波束形成器在计算想象相干性之前在解剖空间中定位信号源。我们的rtMEG实验表明，健康的受试者在注意到闪烁的视觉刺激时，可以增加顶叶皮质和视觉皮质之间的连贯性。这一发现表明，我们的系统适用于神经反馈训练，并可用于实际的脑机接口应用或神经反馈康复。
Real-time magnetoencephalography (rtMEG) is an emerging neurofeedback technology that could potentially benefit multiple areas of basic and clinical neuroscience. In the present study, we implemented voxel-based real-time coherence measurements in a rtMEG system in which we employed a beamformer to localize signal sources in the anatomical space prior to computing imaginary coherence. Our rtMEG experiment showed that a healthy subject could increase coherence between the parietal cortex and visual cortex when attending to a flickering visual stimulus. This finding suggests that our system is suitable for neurofeedback training and can be useful for practical brain–machine interface applications or neurofeedback rehabilitation.