Power-saving design opportunities for wireless intracortical brain-computer interfaces.

Power-saving design opportunities for wireless intracortical brain-computer interfaces.
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无线皮质内脑机接口的节能设计机会。

DOI:
10.1038/s41551-020-0595-9
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发表时间:
2020-10
影响因子:
28.1
通讯作者:
Shenoy KV
Shenoy KV
中科院分区:
工程技术1区
文献类型:
--
作者:
Even-Chen N;Muratore DG;Stavisky SD;Hochberg LR;Henderson JM;Murmann B;Shenoy KV

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无线皮质内脑机接口(ibci)的有效性部分受到记录通道数量的限制,而记录通道数量又受到可植入系统功率预算的限制。设计提供当今有线神经接口的高质量记录的无线ibci可能会导致以功耗和可伸缩性为代价的无意过度设计。在这里,我们分析了从恒河猴的实验性iBCI测量和从植入96通道犹他多电极阵列的临床试验参与者收集的神经信号,以了解信号质量和解码器性能之间的权衡。我们为临床可行的ibci提出了一种有效的硬件设计,并建议当前记录ibci的电路设计参数可以大大放宽而不会损失性能。所提出的设计可能会节省一个数量级的功率,并导致具有更高通道数的临床可行的ibci。
The efficacy of wireless intracortical brain–computer interfaces (iBCIs) is partly limited by the number of recording channels, which is constrained by the power budget of the implantable system. Designing wireless iBCIs that provide the high-quality recordings of today’s wired neural interfaces may lead to inadvertent over-design at the expense of power consumption and scalability. Here we analysed neural signals collected from experimental iBCI measurements in rhesus macaques and from a clinical-trial participant with implanted 96-channel Utah multi-electrode arrays to understand the trade-offs between signal quality and decoder performance. We propose an efficient hardware design for clinically viable iBCIs, and suggest that the circuit design parameters of current recording iBCIs can be relaxed considerably without loss of performance. The proposed design may allow for an order of magnitude power savings and lead to clinically viable iBCIs with a higher channel count.
偏差,最佳线性估计以及基于峰值的大脑计算机界面算法的开环模拟与闭环性能之间的差异。
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发表时间: 2009-11
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