title: The contingent negative variation: its relation to feedback and expectant attention.
mesh_terms: D000161:Acoustic Stimulation; D000293:Adolescent; D000328:Adult; D001288:Attention; D002540:Cerebral Cortex / Q000502:physiology; D003201:Computers; D003265:Contingent Negative Variation; D004569:Electroencephalography; D004594:Electrophysiology; D005246:Feedback; D006801:Humans; D009043:Motor Activity; D010775:Photic Stimulation; D013637:Tape Recording; D013690:Television