Hopkins, Brian and Churchill, Andrew and Vogt, Stefan and Rönnqvist, Louise (2004) Braking reaching movements : a test of the constant tau-dot strategy under different viewing conditions. Journal of Motor Behavior, 36 (1). pp. 3-12.
Full text not available from this repository.Abstract
Following F. Zaal and R. J. Bootsma (1995), the authors studied whether the decelerative phase of a reaching movement could he modeled as a constant tau-dot strategy resulting in a soft collision with the object. Specifically. they investigated whether that strategy is sustained over different viewing conditions. Participants (N =11 ) were required to reach for 15- and 50-mm objects at 2 different distances under 3 conditions in which visual availability of the immediate environment and of the reaching hand were varied. Tau-dot estimates and goodness-of-fit were highly similar across the 3 conditions. Only within-participant variability of tau-dot estimates was increased when environmental cues were removed. That finding suggests that the motor system uses a tau-dot strategy involving the intermodal (i.e., visual. pro-prioceptive. or both) specification of information to regulate the decelerative phase of reaching under restricted viewing conditions. The authors provide recommendations for improving the derivation of t<sub>x</sub> estimates and stress the need for further research on how time-to-contact information is used in the regulation of the dynamics of actions such as reaching.
| Item Type: | Article |
|---|---|
| Journal or Publication Title: | Journal of Motor Behavior |
| Uncontrolled Keywords: | decelerative phase environmental structure low-velocity phase tau visual feedback |
| Subjects: | B Philosophy. Psychology. Religion > BF Psychology |
| Departments: | Faculty of Science and Technology > Psychology |
| ID Code: | 10022 |
| Deposited By: | Mrs Karen Gerrard |
| Deposited On: | 25 Jun 2008 15:29 |
| Refereed?: | Yes |
| Published?: | Published |
| Last Modified: | 26 Jul 2012 14:42 |
| Identification Number: | |
| URI: | http://eprints.lancs.ac.uk/id/eprint/10022 |
Actions (login required)
| View Item |
