title: Online control of discrete action following visual perturbation.
abstract: We examined the spatial and temporal limitations of the visual corrective process in goal-directed aiming, as well as gender differences in online control. An initial experiment was conducted to test the utility of a monocular switch procedure as a method of rapidly introducing a visual perturbation. The results revealed minimal effect of the monocular switch on movement time and the endpoint error. Following this control experiment, prismatic displacement was introduced at the initiation of and during the movement. In the third experiment, the prism was presented prior to movement initiation, and then removed at the beginning of or during the movement. Movement trajectories were most influenced by the early presentation and removal of the prism, and female performance was significantly more affected by both perturbations than male performance.
authors.affiliation: Department of Kinesiology, McMaster University, 1280 Main Street West, Hamilton, Ontario L86 4K1, Canada. hansensd@mcmaster.ca
authors.forename: Steve
authors.initials: S
authors.lastname: Hansen
authors.forename: Digby
authors.initials: D
authors.lastname: Elliott
authors.forename: Luc
authors.initials: L
authors.lastname: Tremblay
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D030141:Feedback, Psychological / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D009068:Movement / Q000502:physiology*; D011597:Psychomotor Performance / Q000502:physiology*; D012737:Sex Factors; D014796:Visual Perception / Q000502:physiology*