PREVALENCE AND METHODS OF CONTROL OF CEPHALIC SKIN POTENTIAL EEG ARTIFACT
PREVALENCE AND METHODS OF CONTROL OF CEPHALIC SKIN POTENTIAL EEG ARTIFACT
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DOI：
10.1111/j.1469-8986.1974.tb00554.x
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发表时间：
1974-01-01
期刊：
影响因子：
3.7
通讯作者：
KOPELL, BS
中科院分区：
文献类型：
--
作者：
CORBY, JC;ROTH, WT;KOPELL, BS
在随机负变异（CNV）、平均诱发反应（AER）和言语自由联想测试记录中，研究了21s头侧皮肤电位（CSP）伪影的流行情况。同时记录皮肤电位反应和眼电图（EOG）。采用皮下针电极和局部麻醉输注消除脑电图中的CSP伪影。结果表明，皮下针电极和局部麻醉头皮记录的脑电图无CSP伪影。从皮下针电极记录的脑电图显示自发电位转移，但似乎足以用于脑电图记录CNV或AER。在刺激诱发（10s）和自发诱发（3s）两种情况下，有10例21s的脑电图存在显著的CSP伪影。CSP伪影显著增加CNV振幅。CSP伪影显著增加AER晚期正波（P3）。CNV和AER的研究可能会被CSP伪影混淆。上述技术有望实现无CSP伪影的脑电图记录。
Prevalence of the cephalic skin potential (CSP) artifact was studied in 21Ss during EEG recording of the Contingent Negative Variation (CNV), averaged evoked response (AER), and verbal free association test. Skin potential response and electro‐oculogram (EOG) were also recorded. Subdermal pin electrodes and local anesthesia infusion were employed to eliminate the CSP artifact in the EEG.Results indicated that EEG recorded from subdermal pin electrodes or from locally anesthetized scalp was free of CSP artifact. The EEG recorded from subdermal pin electrodes demonstrated spontaneous potential shifts but appeared adequate for EEG recording of the CNV or the AER.Significant CSP artifact was demonstrated in the EEG of 10 of 21Ss, both evoked by stimuli (10Ss) and spontaneous (3Ss). CSP artifact significantly increased CNV amplitude. CSP artifact significantly increased the AER late positive wave (P3) to infrequent tones.Studies of CNV and AER can be confounded by CSP artifact. Above techniques appear promising for recording EEG free of CSP artifact.