title: The influence of target angular velocity on visual latency difference determined using the rotating Pulfrich effect.
abstract: Visual latency difference was determined directly in normal volunteers, using the rotating Pulfrich technique described by Nickalls [Vision Research, 26, 367-372 (1986)]. Subjects fixated a black vertical rod rotating clockwise on a horizontal turntable turning with constant angular velocity (16.6,33.3 or 44.7 revs/min) with a neutral density filter (OD 0.7 or 1.5) in front of the right eye. For all subjects the latency difference associated with the 1.5 OD filter was significantly greater (P < 0.001) with the rod rotating at 16.6 rev/min than at 33.3 revs/min. The existence of an inverse relationship between latency difference and angular velocity is hypothesized.
authors.affiliation: Department of Anaesthesia, City Hospital, Nottingham, UK. dick.nickalls@nottingham.ac.uk
authors.forename: R W
authors.initials: RW
authors.lastname: Nickalls
mesh_terms: D000328:Adult; D005374:Filtration; D006801:Humans; D008875:Middle Aged; D009039:Motion Perception / Q000502:physiology*; D009903:Optical Illusions / Q000502:physiology*; D055095:Optics and Photonics; D012399:Rotation; D013997:Time Factors; D015348:Vision, Binocular