Gambardella A, Pucci F, La Piane E, Messina D, Russo C, Zappia M, Oliveri R L, Quattrone A, Aguglia U
Institute of Neurology School of Medicine, Catanzaro, Italy.
Electroencephalogr Clin Neurophysiol. 1998 Aug;107(2):174-6. doi: 10.1016/s0013-4694(98)00049-2.
The use of latero-orbital (Lo) electrodes is a routine practice in any EEG laboratory to evaluate eye motion, but there are no data about their usefulness in revealing interictal epileptiform abnormalities.
In 60 consecutive patients (27 men, 33 women, mean age 36.8 years, range 17-72) with complex partial seizures, we prospectively evaluated the utility of Lo electrodes in comparison with anterior temporal (AT) electrodes, for the detection of interictal epileptiform discharges (SW).
No epileptiform abnormality was seen in 4/60 patients. Both AT and Lo electrodes were significantly superior to 10-20 electrodes for detection of both patients and foci. Indeed, the standard 10-20 system alone allowed the detection of only 39 independent epileptiform foci in 35/56 (63%) patients, while AT and Lo electrodes were necessary for detection of 23 epileptiform foci in the remaining 21/56 (37%) patients. Importantly, there was no statistically significant difference in detection between AT and Lo electrodes.
Recordings from Lo electrodes are comparable to those from AT electrodes and are useful for localizing interictal temporal spiking activity. Lo electrodes may be substituted for basal electrodes in the day-to-day evaluation of patients with complex partial seizures.
在任何脑电图实验室中，使用眶外侧（Lo）电极来评估眼球运动是一种常规做法，但尚无关于其在揭示发作间期癫痫样异常方面有用性的数据。
在60例连续的复杂部分性发作患者（27例男性，33例女性，平均年龄36.8岁，范围17 - 72岁）中，我们前瞻性地评估了Lo电极与颞前（AT）电极相比，在检测发作间期癫痫样放电（SW）方面的效用。
60例患者中有4例未发现癫痫样异常。AT电极和Lo电极在检测患者和病灶方面均显著优于10 - 20电极。实际上，仅标准的10 - 20系统仅在35/56（63%）的患者中检测到39个独立的癫痫样病灶，而在其余21/56（37%）的患者中检测到23个癫痫样病灶则需要AT电极和Lo电极。重要的是，AT电极和Lo电极在检测方面无统计学显著差异。
Lo电极的记录与AT电极的记录相当，并且对于定位发作间期颞部棘波活动有用。在复杂部分性发作患者的日常评估中，Lo电极可替代基底电极。
