title: Imperative signal modality and characteristics of contingent negative variation (CNV). Communication II.
mesh_terms: D000328:Adult; D001288:Attention / Q000502:physiology*; D001309:Auditory Threshold; D003265:Contingent Negative Variation; D004594:Electrophysiology; D006801:Humans; D010296:Parietal Lobe / Q000502:physiology; D010775:Photic Stimulation; D012684:Sensory Thresholds; D014796:Visual Perception