The contingent negative variation related to preparatory set in a reaction time situation with variable foreperiod.
D000161:Acoustic Stimulation; D002540:Cerebral Cortex / Q000502:physiology*; D003265:Contingent Negative Variation; D004569:Electroencephalography; D006801:Humans; D010775:Photic Stimulation; D011930:Reaction Time; D012718:Set, Psychology