Slow cortical potentials under conditions of uncontrollability.
D000161:Acoustic Stimulation; D000328:Adult; D001362:Avoidance Learning / Q000502:physiology*; D002540:Cerebral Cortex / Q000502:physiology*; D003265:Contingent Negative Variation; D004193:Discrimination Learning / Q000502:physiology; D004569:Electroencephalography; D006801:Humans; D008297:Male