title: Effects of illumination on auditory threshold.
mesh_terms: D000818:Animals; D001143:Arousal; D001309:Auditory Threshold; D003216:Conditioning, Operant; D003624:Darkness; D005260:Female; D000882:Haplorhini; D008029:Lighting; D008297:Male; D012453:Saimiri; D012737:Sex Factors