A Diamond-Based Electrode for Detection of Neurochemicals in the Human Brain

被引:75
作者
Bennet, Kevin E. [1 ,2 ,3 ,4 ]
Tomshine, Jonathan R. [1 ,2 ]
Min, Hoon-Ki [2 ]
Manciu, Felicia S. [4 ]
Marsh, Michael P. [2 ]
Paek, Seungleal B. [2 ]
Settell, Megan L. [2 ]
Nicolai, Evan N. [2 ]
Blaha, Charles D. [2 ]
Kouzani, Abbas Z. [3 ]
Chang, Su-Youne [2 ]
Lee, Kendall H. [2 ]
机构
[1] Mayo Clin, Div Engn, Rochester, MN USA
[2] Mayo Clin, Neurol Surg, Rochester, MN USA
[3] Deakin Univ, Sch Engn, Melbourne, Vic, Australia
[4] Univ Texas El Paso, Phys, El Paso, TX 79968 USA
来源
FRONTIERS IN HUMAN NEUROSCIENCE | 2016年 / 10卷
关键词
diamond-based electrode; dopamine; deep brain stimulation (DBS); fast scan cyclic voltammetry (FSCV); carbon fiber microelectrode; neuromodulation; HIGH-FREQUENCY STIMULATION; SCAN CYCLIC VOLTAMMETRY; SUBSECOND DOPAMINE RELEASE; SUBTHALAMIC NUCLEUS; NEUROTRANSMITTER RELEASE; ELECTRICAL-STIMULATION; RAT MODEL; MICROELECTRODES; ADENOSINE; STRIATUM;
D O I
10.3389/fnhum.2016.00102
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
Deep brain stimulation (DBS), a surgical technique to treat certain neurologic and psychiatric conditions, relies on pre-determined stimulation parameters in an open-loop configuration. The major advancement in DBS devices is a closed-loop system that uses neurophysiologic feedback to dynamically adjust stimulation frequency and amplitude. Stimulation-driven neurochemical release can be measured by fast-scan cyclic voltammetry (FSCV), but existing FSCV electrodes rely on carbon fiber, which degrades quickly during use and is therefore unsuitable for chronic neurochemical recording. To address this issue, we developed durable, synthetic boron-doped diamond-based electrodes capable of measuring neurochemical release in humans. Compared to carbon fiber electrodes, they were more than two orders-of-magnitude more physically-robust and demonstrated longevity in vitro without deterioration. Applied for the first time in humans, diamond electrode recordings from thalamic targets in patients (n = 4) undergoing DBS for tremor produced signals consistent with adenosine release at a sensitivity comparable to carbon fiber electrodes.
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页数:12
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