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Recording local field potential and neuronal activity with tetrodes in epileptic patients.
Journal of Neuroscience Methods ( IF 3 ) Pub Date : 2020-05-07 , DOI: 10.1016/j.jneumeth.2020.108759
Elodie Despouy 1 , Jonathan Curot 2 , Leila Reddy 3 , Lionel G Nowak 3 , Martin Deudon 3 , Jean-Christophe Sol 4 , Jean-Albert Lotterie 5 , Marie Denuelle 2 , Ali Maziz 6 , Christian Bergaud 6 , Simon J Thorpe 3 , Luc Valton 2 , Emmanuel J Barbeau 3
Affiliation  

BACKGROUND Recordings with tetrodes have proven to be more effective in isolating single neuron spiking activity than with single microwires. However, tetrodes have never been used in humans. We report on the characteristics, safety, compatibility with clinical intracranial recordings in epileptic patients, and performance, of a new type of hybrid electrode equipped with tetrodes. NEW METHOD 240 standard clinical macroelectrodes and 102 hybrid electrodes were implanted in 28 patients. Hybrids (diameter 800 μm) are made of 6 or 9 macro-contacts and 2 or 3 tetrodes (diameter 70-80 μm). RESULTS No clinical complication or adverse event was associated with the hybrids. Impedance and noise of recordings were stable over time. The design enabled multiscale spatial analyses that revealed physiopathological events which were sometimes specific to one tetrode, but could not be recorded on the macro-contacts. After spike sorting, the single-unit yield was similar to other hybrid electrodes and was sometimes as high as >10 neurons per tetrode. COMPARISON WITH EXISTING METHOD(S) This new hybrid electrode has a smaller diameter than other available hybrid electrodes. It provides novel spatial information due to the configuration of the tetrodes. The single-unit yield appears promising. CONCLUSIONS This new hybrid electrode is safe, easy to use, and works satisfactorily for conducting multi-scale seizure and physiological analyses.

中文翻译:

用四极管记录癫痫患者的局部场电位和神经元活动。

背景技术与单微丝相比,使用四极管的记录已被证明在隔离单个神经元尖峰活动方面更有效。然而,四极管从未用于人类。我们报告了配备四极管的新型混合电极的特性、安全性、与癫痫患者临床颅内记录的兼容性以及性能。新方法 在 28 名患者中植入了 240 个标准临床大电极和 102 个混合电极。混合体(直径 800 μm)由 6 或 9 个宏触点和 2 或 3 个四极管(直径 70-80 μm)组成。结果 没有临床并发症或不良事件与杂交相关。录音的阻抗和噪音随着时间的推移是稳定的。该设计实现了多尺度空间分析,揭示了有时特定于一个四极管的病理生理事件,但无法在宏观接触上记录。尖峰分选后,单个单位的产量与其他混合电极相似,有时每个四极管高达 >10 个神经元。与现有方法的比较 这种新型混合电极的直径小于其他可用混合电极的直径。由于四极管的配置,它提供了新的空间信息。单机产量似乎很有希望。结论 这种新的混合电极安全、易于使用,并且在进行多尺度癫痫发作和生理分析时效果令人满意。单个单位的产量与其他混合电极相似,有时每个四极管的神经元数量高达 >10 个。与现有方法的比较 这种新型混合电极的直径小于其他可用混合电极的直径。由于四极管的配置,它提供了新的空间信息。单机产量似乎很有希望。结论 这种新的混合电极安全、易于使用,并且在进行多尺度癫痫发作和生理分析时效果令人满意。单个单位的产量与其他混合电极相似,有时每个四极管的神经元数量高达 >10 个。与现有方法的比较 这种新型混合电极的直径小于其他可用混合电极的直径。由于四极管的配置,它提供了新的空间信息。单机产量似乎很有希望。结论 这种新的混合电极安全、易于使用,并且在进行多尺度癫痫发作和生理分析时效果令人满意。
更新日期:2020-05-07
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