title: Effects of stimulus probability and task-relevance on event-related potentials.
mesh_terms: D000161:Acoustic Stimulation; D000293:Adolescent; D000328:Adult; D001288:Attention / Q000502:physiology; D001307:Auditory Perception / Q000502:physiology*; D003214:Conditioning, Classical; D003265:Contingent Negative Variation; D005071:Evoked Potentials; D006801:Humans; D008297:Male; D009949:Orientation; D011336:Probability; D011930:Reaction Time / Q000502:physiology