健康犬脑电图机的电极头皮阻抗差异。
Electrode scalp impedance differences between electroencephalography machines in healthy dogs.
机构信息
Department of Clinical Studies, Ontario Veterinary College, University of Guelph, 50 Stone Road East, Guelph, Ontario N1G 2W1.
出版信息
Can J Vet Res. 2021 Oct;85(4):309-311.
Scalp electrode impedance measurements recorded by wired and wireless electroencephalography (EEG) machines in 7 healthy dogs were compared. Eight recordings resulted in 80 impedance readings from subdermal wire electrodes (locations F7/F8, F3/F4, T3/T4, C3/C4, Fz, and Cz). Impedance values were measured first from the wired and then the wireless EEG machine. Wireless impedance measurements were higher than the wired EEG machine in 79/80 readings ( ≤ 0.05), being on average 2.83 kΩ [ ≤ 0.05, 95% confidence interval (CI): 2.51 to 3.14, SD = 1.42] higher. Impedances from the wired machine ranged between < 0.5 and 9 kΩ (mean = 3.09, median = 2.00, SD = 2.15), whereas impedances from the wireless machine ranged between 2.69 and 6.07 kΩ (mean = 5.92, median = 5.05, SD = 2.59). Despite these differences in impedance measurements, both machines measured similar impedance patterns. The wireless EEG machine's impedance measurements, therefore, should be acceptable for veterinary clinical settings.
比较了有线和无线脑电图（EEG）仪记录的 7 只健康犬的头皮电极阻抗测量值。8 次记录得出了 80 个皮下线电极（F7/F8、F3/F4、T3/T4、C3/C4、Fz 和 Cz 位置）的阻抗读数。首先从有线和无线 EEG 仪测量了阻抗值。无线阻抗测量值在 79/80 次读数中高于有线 EEG 仪（≤0.05），平均高 2.83 kΩ[≤0.05，95%置信区间（CI）：2.51 至 3.14，SD=1.42]。有线仪的阻抗范围为<0.5 至 9 kΩ（均值=3.09，中位数=2.00，SD=2.15），而无线仪的阻抗范围为 2.69 至 6.07 kΩ（均值=5.92，中位数=5.05，SD=2.59）。尽管阻抗测量值存在这些差异，但两种仪器都测量了相似的阻抗模式。因此，无线 EEG 仪的阻抗测量值可用于兽医临床环境。
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