title: Stereophotometric testing for Pulfrich's phenomenon in professional baseball players.
abstract: Major League players were significantly more accurate in performing stereophotometry than were Minor League players. The stereophotometric data based upon the induction and extinction thresholds of the Pulfrich phenomenon were significantly correlated with the batting averages of Major League baseball players. The coefficient of determination, r2, implies that visual ability as measured by stereophotometry accounts for 47% or more of the variation in batting averages of the Major League players. This test may be a useful index in predicting batting ability.
authors.affiliation: Department of Ophthalmology, Columbia University, New York, New York.
authors.forename: A J
authors.initials: AJ
authors.lastname: Hofeldt
authors.forename: F B
authors.initials: FB
authors.lastname: Hoefle
mesh_terms: D000328:Adult; D001484:Baseball; D015350:Contrast Sensitivity; D003867:Depth Perception; D005108:Extinction, Psychological; D006801:Humans; D008297:Male; D009039:Motion Perception; D009903:Optical Illusions; D011601:Psychophysics; D015357:Vision Disparity