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Towards machine to brain interfaces: sensory stimulation enhances sensorimotor dynamic functional connectivity in upper limb amputees.
Journal of Neural Engineering ( IF 4 ) Pub Date : 2020-06-01 , DOI: 10.1088/1741-2552/ab882d
Keqin Ding 1 , Andrei Dragomir , Rohit Bose , Luke E Osborn , Manuel S Seet , Anastasios Bezerianos , Nitish V Thakor
Affiliation  

Objective. Recent development of sensory stimulation techniques demonstrates the ability to elicit touch-like phantom sensations in upper limb amputees. The cortical processing of this phantom sensation and the corresponding influences on sensorimotor functional connectivity have not been studied. We hypothesize that sensory stimulation has a profound impact on the sensorimotor cortical functional interactions, which will be uncovered by dynamic functional connectivity (dFC) analysis of amputees’ electroencephalogram (EEG) recordings. Approach. We investigated dFC between cortical areas associated with somatosensory, motor, visual, and multisensory processing functions using EEG signals. We applied dFC to the EEG of two amputees performing hand movements with and without sensory stimulation and compared the results with those from three able-bodied subjects. We quantified the changes due to sensory stimulation using dFC metrics, namely temporal distance, number of...

中文翻译:

走向机器到大脑的界面:感觉刺激增强了上肢截肢者的感觉运动动态功能连接。

目的。感觉刺激技术的最新发展证明了能够在上肢截肢者中引起类似触摸的幻像感觉的能力。尚未研究这种幻觉的皮层处理以及对感觉运动功能连接性的相应影响。我们假设感觉刺激对感觉运动皮质功能相互作用有深远的影响,这将被截肢者的脑电图(EEG)记录的动态功能连接(dFC)分析所揭示。方法。我们研究了使用脑电图信号在与体感,运动,视觉和多感官处理功能相关的皮质区域之间的dFC。我们将dFC应用于在有无感觉刺激的情况下进行手部动作的两个截肢者的脑电图,并将结果与​​来自三个健全主体的结果进行了比较。我们使用dFC指标量化了由于感觉刺激而引起的变化,这些指标即时间距离,...的数量。
更新日期:2020-06-01
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