Optimal spacing of surface electrode arrays for brain-machine interface applications.
Optimal spacing of surface electrode arrays for brain-machine interface applications.
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DOI：
10.1088/1741-2560/7/2/026004
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发表时间：
2010-04
影响因子：
4
通讯作者：
Miller LE
中科院分区：
文献类型：
--
作者：
Slutzky MW;Jordan LR;Krieg T;Chen M;Mogul DJ;Miller LE
脑机接口(BMI)使用直接从大脑记录的信号来控制外部设备，如计算机光标或假肢。这些控制信号是从大脑的不同层面记录下来的，从头皮或皮质表面的场电位到单个神经元动作电位。目前，越有侵入性的录音信号质量越好，但随着时间的推移，稳定性也会降低。最近，硬膜下磁场电位被认为是一种稳定的、高质量的控制信号源，具有比脑电更高的空间和时间带宽。在这里，我们使用了大鼠和人的有限元模型以及大鼠的空间频谱分析来比较硬膜外记录的信号与硬膜下和头皮位置记录的信号的空间分辨率。硬膜外和硬膜下信号的分辨率在大鼠中非常相似，而在人类模型中略有不同。这两种信号都比头皮上记录的信号要好得多。当脑脊液层厚度减小时，人类硬膜外和硬膜下信号的分辨率更加相似。这表明，侵入性较小的硬膜外记录可以产生与硬膜下记录类似质量的信号，因此作为BMI的控制信号源可能更具吸引力。
Brain-machine interfaces (BMIs) use signals recorded directly from the brain to control an external device, such as a computer cursor or prosthetic limb. These control signals have been recorded from different levels of the brain, from field potentials at the scalp or cortical surface to single neuron action potentials. At present, the more invasive recordings have better signal quality, but also lower stability over time. Recently, subdural field potentials have been proposed as a stable, good quality source of control signals, with the potential for higher spatial and temporal bandwidth than EEG. Here we used finite element modeling in rats and humans and spatial spectral analysis in rats to compare the spatial resolution of signals recorded epidurally (outside the dura), with those recorded from subdural and scalp locations. Resolution of epidural and subdural signals was very similar in rats, and somewhat less so in human models. Both were substantially better than signals recorded at the scalp. Resolution of epidural and subdural signals in humans was much more similar when the cerebrospinal fluid layer thickness was reduced. This suggests that the less invasive epidural recordings may yield signals of similar quality to subdural recordings, and hence may be more attractive as a source of control signals for BMIs.
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影响因子：
64.8
作者：
Moritz, Chet T.;Perlmutter, Steve I.;Fetz, Eberhard E.
通讯作者：
Fetz, Eberhard E.
影响因子：
1.9
作者：
FREEMAN, WJ;BAIRD, B
通讯作者：
BAIRD, B
影响因子：
4.7
作者：
Freeman, Walter J.;Holmes, Mark D.;Vanhatalo, Sampsa
通讯作者：
Vanhatalo, Sampsa
DOI：
10.1109/tnsre.2006.875536
发表时间：
2006-06-01
影响因子：
4.9
作者：
Leuthardt, Eric C.;Miller, Kai J.;Ojemann, Jeffrey G.
通讯作者：
Ojemann, Jeffrey G.
影响因子：
64.8
作者：
Hochberg, Leigh R.;Serruya, Mijail D.;Donoghue, John P.
通讯作者：
Donoghue, John P.