title: Treadmill experience mediates the perceptual-motor aftereffect of treadmill walking.
abstract: People have a lifetime of experience in which to calibrate their self-produced locomotion with the resultant optical flow. Contrary to walking across the ground, however, walking on a treadmill produces minimal optical flow, and consequentially, a perceptual-motor aftereffect results. We demonstrate that the magnitude of this perceptual-motor aftereffect-measured by forward drift while attempting to march in-place following treadmill walking-decreases as experience walking on a treadmill is acquired over time. Experience with treadmill walking enables walking in this context to become sufficiently distinguished from walking in other contexts. Consequently, two distinct perceptual-motor calibration states are maintained, each linked to the context in which walking occurs. Experience with treadmill walking maintains perceptual-motor calibration accuracy in both walking contexts, despite changes to the relationship between perception and action.
authors: Department of Psychology, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada. abrennan@psych.ubc.ca
authors: Allison A
authors: AA
authors: Brennan
authors: Jonathan Z
authors: JZ
authors: Bakdash
authors: Dennis R
authors: DR
authors: Proffitt
mesh_terms: D000293:Adolescent; D000328:Adult; D005080:Exercise Test / Q000523:psychology*; D005260:Female; D006801:Humans; D007088:Illusions / Q000502:physiology*; D007858:Learning / Q000502:physiology*; D008124:Locomotion / Q000502:physiology*; D009048:Motor Skills / Q000502:physiology; D011597:Psychomotor Performance / Q000502:physiology*; D016138:Walking / Q000502:physiology*; D055815:Young Adult