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Guidelines for Standard Electrode Position Nomenclature

已有 1835 次阅读 2017-6-13 16:02 |个人分类:临床指南和病例解析|系统分类:观点评述| style, color

Guidelines for Standard Electrode Position Nomenclature

Guidelines for Standard Electrode Position Nomenclature

1. For routine EEGs, where the indication is not epilepsy or localization of an epileptic focus is not critical, the 10-20 system may be clinically adequate for most patients and efficient in terms of time, effort, and cost. It may also be sufficient for many diagnostic (such as distinguishing between epileptic and psychogenic events) long-term ambulatory and inpatient video-EEG monitoring studies.
2. Because of its greater spatial resolution, the 10-10 system provides better localizing information and should be used in patients undergoing presurgical evaluation in the epilepsy monitoring unit. However, not all of the electrode positions need be used; selective electrode positions can be chosen based on the suspected location of the epileptic focus. Additional electrodes from the 10-10 system may also be used sometimes during routine EEGs, when an attempt is made to localize the epileptic focus in patients with suspected focal epilepsy, and during certain diagnostic ambulatory and video-EEG studies (for instance, in patients with psychogenic events versus frontal lobe seizures).
3. The entire set of 10-10 electrode positions, with or without additional electrodes, can be used if additional digital analysis, including source localization and electrical source imaging, is planned.
4. Although it would be desirable to switch to T7/T8 and P7/P8 for both clinical and educational (including publication) purposes, it would be an acceptable alternative to continue to use T3/4 and T5/6, or to use both terms, at present. Modification of commercially available EEG machine headboxes to reflect the change and education of trainees will likely lead to gradual acceptance of the new terminology.