Multiplexed, high density electrophysiology with nanofabricated neural probes.

Multiplexed, high density electrophysiology with nanofabricated neural probes.
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使用纳米制造的神经探针进行多重、高密度电生理学。

DOI:
10.1371/journal.pone.0026204
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发表时间:
2011
期刊:
影响因子:
3.7
通讯作者:
Masmanidis SC
Masmanidis SC
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Du J;Blanche TJ;Harrison RR;Lester HA;Masmanidis SC

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细胞外电极阵列可以以单细胞、单峰和亚毫秒分辨率揭示神经网络行为相关性。然而,可植入电极本质上是侵入性的,并且为了连接电极,按比例增加记录位点的数量和密度的努力必须在设备尺寸上妥协。在这里,我们报告硅基神经探针采用纳米制造的,高密度的电引线。此外,我们解决的挑战,阅读出多通道数据与专用集成电路(ASIC)执行信号放大,带通滤波,和多路复用功能。我们展示了高空间分辨率的细胞外测量与一个完全集成的,低噪声的64通道系统,重量只有330毫克。片内多路复用器使记录可能与远少于输入通道的数量外部电线。通过将纳米制造的探针与ASIC相结合,我们实现了一种系统,用于在小的、自由行为的动物中进行大规模、高密度的电生理学研究,该系统具有微创性和高度可扩展性。
Extracellular electrode arrays can reveal the neuronal network correlates of behavior with single-cell, single-spike, and sub-millisecond resolution. However, implantable electrodes are inherently invasive, and efforts to scale up the number and density of recording sites must compromise on device size in order to connect the electrodes. Here, we report on silicon-based neural probes employing nanofabricated, high-density electrical leads. Furthermore, we address the challenge of reading out multichannel data with an application-specific integrated circuit (ASIC) performing signal amplification, band-pass filtering, and multiplexing functions. We demonstrate high spatial resolution extracellular measurements with a fully integrated, low noise 64-channel system weighing just 330 mg. The on-chip multiplexers make possible recordings with substantially fewer external wires than the number of input channels. By combining nanofabricated probes with ASICs we have implemented a system for performing large-scale, high-density electrophysiology in small, freely behaving animals that is both minimally invasive and highly scalable.
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