TY  - JOUR
AU  - Lenoir, M.
A2  - Lenoir, M.
A2  - Musch, E.
A2  - Janssens, M.
A2  - Thiery, E.
A2  - Uyttenhove, J.
DB  - BISp
DP  - BISp
KW  - Ball
KW  - Bewegungsablauf
KW  - Bewegungslehre
KW  - Fangen
KW  - Körperhaltung
KW  - Laufen
KW  - Timing
LA  - eng
TI  - Intercepting moving objects during self-motion
TT  - Das Fangen von sich bewegenden Objekten in der Eigenbewegung
PY  - 1999
N2  - It is generally assumed that in catching a fly ball, an efficient strategy for dealing with the horizontal component of the ball's trajectory is for the observer to keep the angular position of the ball constant with respect to his head. This strategy  is called the constant bearing angle or CBA strategy. Maintenance of angular constancy results in the simultaneous arrival of both observer and ball at the landing spot. The authors analyzed the approach behavior of 26 subjects in a ball-interception task with straight paths for both the subjects and the ball. Subjects moved at a velocity that maintained a close-to-constant horizontal angular position of the ball with respect to the end effector throughout the approach phase rather than a constant bearing angle with respect to their head. Velocity adaptions occured as a function of the changes in the angular velocity of the ball in such way that a positive or negative angular velocity was canceled. Thus, an actor following the CBA strategy does not need to know where and when the ball will arrive (i.e., a predictive strategy), because reliance on the CBA strategy ensures that he will make the appropriate adaptions that enable him to arrive at the right place in the right time.   Verf.-Referat
SP  - S. 55-67
SN  - 0022-2895
JO  - Journal of motor behavior
IS  - 1
VL  - 31
M3  - Gedruckte Ressource
ID  - PU199912403244
ER  -