2009
DOI: 10.1007/s00221-009-2073-1
|View full text |Cite
|
Sign up to set email alerts
|

Kinematic analysis of the human wrist during pointing tasks

Abstract: In this work, we tested the hypothesis that intrinsic kinematic constraints such as Donders' law are adopted by the brain to solve the redundancy in pointing at targets with the wrist. Ten healthy subjects were asked to point at visual targets displayed on a monitor with the three dof of the wrist. Three-dimensional rotation vectors were derived from the orientation of the wrist acquired during the execution of the motor task and numerically fitted to a quadratic surface to test Donders' law. The thickness of … Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1
1

Citation Types

6
67
0

Year Published

2011
2011
2018
2018

Publication Types

Select...
3
3
1

Relationship

1
6

Authors

Journals

citations
Cited by 40 publications
(73 citation statements)
references
References 34 publications
6
67
0
Order By: Relevance
“…1-right, both the wrist pointing directions n i (red circles) and the rotation vectors r i (blue crosses) are represented. Our analysis confirmed previous results [6] in that the rotation vectors tend to lie on a 2-dimensional surface (Donders' law) which can be well approximated by a plane near the 'zero' position.…”
Section: Discussionsupporting
confidence: 90%
See 3 more Smart Citations
“…1-right, both the wrist pointing directions n i (red circles) and the rotation vectors r i (blue crosses) are represented. Our analysis confirmed previous results [6] in that the rotation vectors tend to lie on a 2-dimensional surface (Donders' law) which can be well approximated by a plane near the 'zero' position.…”
Section: Discussionsupporting
confidence: 90%
“…1) the position of a round cursor is determined, in real-time, directly by the orientation of the subject's wrist (the cursor is the projection of the pointing vector n i onto the screen plane). A more detailed description of the experimental setup can be found in [6].…”
Section: B Experimental Setupmentioning
confidence: 99%
See 2 more Smart Citations
“…To make natural wrist rotations, the neuromuscular system must plan and/or control for the two-dimensional (2-D) stiffness encountered during the rotation. It has been suggested that wrist stiffness visibly affects the path shape of wrist rotations (Charles and Hogan 2010) and even influences pronation and supination of the forearm (Campolo et al 2010;Charles 2008). Therefore, understanding how the neuromuscular system plans and controls natural wrist rotations requires a knowledge of wrist stiffness in 2 DOF.…”
mentioning
confidence: 99%