Backward and forward masking as a function of number of letters, interstimulus interval, and luminance.
D000360:Afterimage; D005260:Female; D005403:Fixation, Ocular; D005556:Form Perception; D006801:Humans; D007257:Information Theory; D008029:Lighting; D008297:Male; D008568:Memory; D010470:Perceptual Masking; D011214:Practice, Psychological; D013997:Time Factors