“…The former has emphasized that online adjustment during interception is achieved by a continuous coupling between the perceptual and motor systems by directly perceiving optical variables such as tau (Bootsma, Houbiers, Whiting, & van Wieringen, 1991;Bootsma & van Wieringen, 1990;Le Runigo et al, 2005;Tresilian, 1995) and controlling the required velocity of effector movement (Montagne, Laurent, Durey, & Bootsma, 1999;Peper, Bootsma, Mestre, & Bakker, 1994). That is, this theory does not emphasize the use of internal representation of future target motion, but rather, it emphasizes the use of current visual information of target motion to estimate the TTC.…”