caa a22 4500 445350679 CHVBK 20180317142843.0 cr unu---uuuuu 170323e20111001xx s 000 0 eng 10.1007/s00221-011-2865-y doi (NATIONALLICENCE)springer-10.1007/s00221-011-2865-y Locomoting-to-reach: information variables and control strategies for nested actions [Elektronische Daten] [Joe Anderson, Geoffrey Bingham] Locomoting-to-reach is a basic perception/action behavior that requires visual information for the control of both locomotion and reaching components. We investigated the visual information and the control strategies used to guide both the head and the hand on approach to a target in a locomotion-to-reach task. In this study, participants were required to locomote in the dark to a lit target in three different conditions: monocular vision/target with image size, binocular vision/target with image size, and binocular vision/point-light target (without image size). In task one, participants brought their eyes to the target. In task two, participants brought their outstretched hand to the target. Movement trajectories for both tasks were analyzed. Results show that participants were significantly more accurate when binocular information was present. In both tasks, participants were found to use a proportional rate control strategy rather than a constant $$ \dot{\tau} $$ strategy. In the walk-to-reach task, they used monocular and/or binocular τ information to guide the head and then switched to using relative disparity τ to guide the hand to final target acquisition, switching when the hand centric τ became less than the head centric τ. Dynamical models of the information and control strategies were used to perform simulations that were found to fit the data well. The conclusion is that proportional rate control is used sequentially with head centric, then hand-centric τ-based information, using at each moment the τ with the smallest value. Springer-Verlag, 2011 Locomotion nationallicence Reaching nationallicence Proportional rate nationallicence Tau nationallicence Information nationallicence Locomotion-to-reach nationallicence Anderson Joe Psychological and Brain Sciences, Indiana University, 1101 E 10th Street, 47405-7707, Bloomington, IN, USA aut Bingham Geoffrey Psychological and Brain Sciences, Indiana University, 1101 E 10th Street, 47405-7707, Bloomington, IN, USA aut Experimental Brain Research Springer-Verlag 214/4(2011-10-01), 631-644 0014-4819 214:4<631 2011 214 221 https://doi.org/10.1007/s00221-011-2865-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00221-011-2865-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Anderson Joe Psychological and Brain Sciences, Indiana University, 1101 E 10th Street, 47405-7707, Bloomington, IN, USA aut NATIONALLICENCE 700 1- Bingham Geoffrey Psychological and Brain Sciences, Indiana University, 1101 E 10th Street, 47405-7707, Bloomington, IN, USA aut NATIONALLICENCE 773 0- Experimental Brain Research Springer-Verlag 214/4(2011-10-01), 631-644 0014-4819 214:4<631 2011 214 221 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer