@article{ref1,
title="Visual control of braking in goal-directed action and sport",
journal="Journal of sports sciences",
year="1997",
author="Bardy, B. G. and Warren, William H.",
volume="15",
number="6",
pages="607-620",
abstract="Reaching a moving object, avoiding an obstacle, or controlling a rotation are common requirements of experts in sport and goal-directed action. Since the original analysis of optic flow, a large number of studies have addressed the problem of perception and control of braking. In this paper, the perception-action strategies described for deceleration control are reviewed; driving, docking, landing, somersaulting, running and reaching are analysed. The role played by 'tau dot', the first temporal derivative of tau, is shown to be critical. However, the so-called constant tau-dot strategy proposed to explain how we regulate our deceleration in such circumstances is critically examined and rejected. New directions in the problem of braking control are proposed that emphasize: (1) the advantage of tau-dot over other kinematic variables; (2) the task specificity of tau-dot; (3) the need to consider tau-dot as a control variable; and (4) the role played by the controller dynamics in the perception-action loop. Several directions for future research are suggested.<p /><p>Language: en</p>",
language="en",
issn="0264-0414",
doi="",
url="http://dx.doi.org/"
}