Braking reaching movements:a test of the constant tau-dot strategy under different viewing conditions

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. ISSN 0022-2895

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 be 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, proprioceptive, 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 $$ x 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:
Journal Article
Journal or Publication Title:
Journal of Motor Behavior
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/1300/1304
Subjects:
ID Code:
70073
Deposited By:
Deposited On:
23 Jul 2014 08:22
Refereed?:
Yes
Published?:
Published
Last Modified:
01 Jan 2020 08:56