[Relationship between the slow potentials of the human EEG, the cutaneous galvanic potential and the...

The paper deals with the possibilities of cross-correlational analysis as a control to revealing slow components of non-brain origin in human EEG, superimposed on the brain potentials. Such control is necessary in the study of low-frequency (2 c/s and lower) EEG manifestations ("expectancy waves", shifts in the level of the constant potential etc.). It is shown that EEG may include as slow components electrooculogram and SGR, both peripheral (hand) and that of the scalp (temporal and frontal). The share of the responses depends on the functional state of the healthy subject.