1. Very slow brain potentials relating to expectancy: the CNV;Cohen,1969
2. A time locked low level calibrator;Emde;Electroenceph. clin. Neurophysiol.,1964
3. Summated human EEG potentials with voluntary movements;Gilden;Electroenceph. clin. Neurophysiol.,1966
4. Anxiety, stress and the contingent negative variation;Knott;Electroenceph. clin. Neurophysiol.,1967
5. Anxiety, stress and the contingent negative variation (CNV);Knott;Electroenceph. clin. Neurophysiol.,1968