三极同心 EEG 电极可降低噪声。

Tripolar concentric EEG electrodes reduce noise.

机构信息

Bass Medical Group, Department of Neurology, Suite 301, 400 Taylor Blvd, Pleasant Hill, CA 94523, USA.

NYU Langone Comprehensive Epilepsy Center, 240 East 38th Street, New York, NY 10016, USA.

出版信息

Clin Neurophysiol. 2020 Jan;131(1):193-198. doi: 10.1016/j.clinph.2019.10.022. Epub 2019 Nov 22.

DOI:10.1016/j.clinph.2019.10.022

PMID:31809982

Abstract

OBJECTIVE

To assay EEG signal quality recorded with tripolar concentric ring electrodes (TCREs) compared to regular EEG electrodes.

METHODS

EEG segments were recorded simultaneously by TCREs and regular electrodes, low-pass filtered at 35 Hz (REG35) and 70 Hz (REG70). Clips were rated blindly by nine electroencephalographers for presence or absence of key EEG features, relative to the "gold-standard" of the clinical report.

RESULTS

TCRE showed less EMG artifact (F = 15.4, p < 0.0001). Overall quality rankings were not significantly different. Focal slowing was better detected by TCRE and spikes were better detected by regular electrodes. Seizures (n = 85) were detected by TCRE in 64 cases (75.3%), by REG70 in 75 (88.2%) and REG35 in 69 (81.2%) electrodes. TCRE detected 9 (10.6%) seizures not detected by one of the other 2 methods. In contrast, 14 seizures (16.5%) were not detected by TCRE, but were by REG35 electrodes. Each electrode detected interictal spikes when the other did not.

CONCLUSIONS

TCRE produced similar overall quality and confidence ratings versus regular electrodes, but less muscle artifact. TCRE recordings detected seizures in 7% of instances where regular electrodes did not.

SIGNIFICANCE

The combination of the two types increased detection of epileptiform events compared to either alone.

摘要

目的

比较三极同心环电极（TCRE）与常规电极记录的脑电图信号质量。

方法

TCRE 和常规电极同时记录脑电图片段，低通滤波 35 Hz（REG35）和 70 Hz（REG70）。9 位脑电图专家对这些片段进行了盲法评估，以判断其是否存在关键脑电图特征，相对于临床报告的“金标准”。

结果

TCRE 显示出较少的肌电伪影（F=15.4，p<0.0001）。总体质量评分没有显著差异。TCRE 更能检测到局灶性慢波，而常规电极更能检测到棘波。发作（n=85）在 64 例（75.3%）TCRE 中、在 75 例（88.2%）REG70 中、在 69 例（81.2%）REG35 中被检测到。TCRE 检测到了 9 例（10.6%）其他两种方法均未检测到的发作。相比之下，有 14 例（16.5%）发作未被 TCRE 检测到，但被 REG35 电极检测到。当另一个电极未检测到棘波时，每个电极都检测到了棘波。