METHODOLOGICAL PROBLEMS IN INVESTIGATION OF CEREBRAL POTENTIALS PRECEDING SPEECH - DETERMINING ONSET AND SUPPRESSING ARTIFACTS CAUSED BY SPEECH
METHODOLOGICAL PROBLEMS IN INVESTIGATION OF CEREBRAL POTENTIALS PRECEDING SPEECH - DETERMINING ONSET AND SUPPRESSING ARTIFACTS CAUSED BY SPEECH
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DOI：
10.1016/0028-3932(75)90002-0
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发表时间：
1975-01-01
期刊：
影响因子：
2.6
通讯作者：
KRIEBEL, J
中科院分区：
文献类型：
--
作者：
GROZINGER, B;KORNHUBER, HH;KRIEBEL, J
本文通过对17名被试进行的42项独立实验，研究了语音和发声前的伪影对脑电位的影响。对磁带存储的数据采用时间反平均法进行分析。证明和/或讨论了以下可能的伪影污染：GSR、电场伪影、头部和引线运动、肌电图影响、眨眼、舌动电位、参考电极位置和时间常数。消除所讨论的伪影支持记录电位的颅内起源。先前报道的言语和类似活动前脑电位的半球间不对称[4,6 - 10]因此代表了半球优势的生物电相关性。
Artefact influences on brain potentials preceding speech and phonation are investigated in 42 separate experiments with 17 subjects. The method of time-reversed averaging of tape stored data was used for analysis [13]. The following possible artefact contaminations were proved and/or discussed: GSR, electrical field artefacts, head and lead movements, EMG influences, eye blinks, glossokinetic potentials, positions of reference electrodes and time constants. The elimination of the discussed artefacts supports the intracranial origin of the recorded potentials. Previously reported interhemispheric asymmetries of brain potentials preceding speech and similar activities [4, 6–10] therefore represent a biolectric correlate of hemispheric dominance.