Emitted and evoked P300 potentials and variation in stimulus probability.
D000161:Acoustic Stimulation; D000200:Action Potentials; D000328:Adult; D001307:Auditory Perception / Q000502:physiology*; D001921:Brain / Q000502:physiology*; D003265:Contingent Negative Variation; D005071:Evoked Potentials; D006801:Humans; D008297:Male; D011336:Probability; D011930:Reaction Time