Overshadowing and stimulus intensity.
D000161:Acoustic Stimulation; D000818:Animals; D001288:Attention; D001307:Auditory Perception; D003216:Conditioning, Operant; D008297:Male; D010470:Perceptual Masking; D010775:Photic Stimulation; D051381:Rats; D013997:Time Factors; D014796:Visual Perception