Acquisition of Animated and Pop-Up Targets
INTERACT '09 Proceedings of the 12th IFIP TC 13 International Conference on Human-Computer Interaction: Part II
A minimum jerk predictor for teleoperation with variable time delay
IROS'09 Proceedings of the 2009 IEEE/RSJ international conference on Intelligent robots and systems
Bias towards regular configuration in 2D pointing
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Multisensory learning cues using analytical collision detection between a needle and a tube
HAPTICS'04 Proceedings of the 12th international conference on Haptic interfaces for virtual environment and teleoperator systems
Double-target experiments with a sequential neuro-controller
Mathematical and Computer Modelling: An International Journal
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In this paper we study the question of how an aimed arm movement is modified in response to a sudden change in target location occurring during the reaction or movement time. Earlier monkey and human studies demonstrated that aimed arm movements can be elicited in quick succession, without appreciable delays in responding to the target displacement, beyond the normal reaction time. Nevertheless, it is not yet clear how this motor task is performed. A first guess is that when a new visual stimulus appears the old plan is aborted and a new one conceived. Upon analyzing human arm movements, however, we find that the observations can be well accounted for by a different movement modification scheme. It appears that a new plan is vectorially added to the original plan. Among the implications of this result is the possibility of parallel planning of elemental movements and further support for the idea that arm movements are internally represented in terms of hand motion through external space.