title: Conditioned after-images. II.
mesh_terms: D000161:Acoustic Stimulation; D000342:Affective Symptoms / Q000209:etiology; D000360:Afterimage; D003214:Conditioning, Classical; D003624:Darkness; D005403:Fixation, Ocular; D006801:Humans; D010469:Perceptual Distortion; D010775:Photic Stimulation; D012858:Size Perception; D013997:Time Factors