1. DC potentials recorded directly from the cortex;Caspers,1974
2. Cerebral psychophysiology: the contingent negative variation;Cohen,1974
3. Akustischen Reizen zugeordnete Gleichspannungsänderungen am intakten Schädel des Menschen;David;Pflügers Arch.,1969
4. Is the sound-evoked DC potential a contingent negative variation?;Järvilehto;Electroenceph. clin. Neurophysiol.,1973
5. Järvilehto, T., Hari, R. and Sams, M., Effect of stimulus repetition on negative sustained potentials elicited by auditory and visual stimuli in the human EEG, submitted for publication.