6533b85afe1ef96bd12b97e8
RESEARCH PRODUCT
Pointing to a target from an upright position in human: tuning of postural responses when there is target uncertainty
Normand TeasdaleMartin SimoneauPhilippe CorbeilChristophe BourdinOlivier Martinsubject
AdultMaleComputer scienceKinematics050105 experimental psychologyPostural controlFingers03 medical and health sciences0302 clinical medicineHumans0501 psychology and cognitive sciencesComputer visionuncertaintypostureCommunication[SDV.NEU.PC]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Psychology and behaviorElectromyographybusiness.industry[SCCO.NEUR]Cognitive science/NeuroscienceGeneral Neuroscience05 social sciences[SDV.NEU.SC]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Cognitive SciencesBody movementHandProprioceptionTrunkVisual Perception[SDV.NEU]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]Artificial intelligencevisual double-stepbusinessPhotic StimulationPsychomotor Performancegoal-directed movement030217 neurology & neurosurgerydescription
International audience; Human subjects performed, from a standing position, rapid hand pointings to visual targets located within or beyond the prehension space. To examine the interaction between posture and the goal-directed movement we introduced a visual double-step perturbation requiring a reprogramming of the hand movement. Trials directed towards the same spatial goal but differentiated only by the likeliness of a visual double-step were compared. The hand kinematics was not affected by the uncertainty of the visual perturbation; an increased trunk bending, however, was observed. This suggests that uncertainty constraints are integrated in a predictive manner for the optimal coordination of the hand and postural control systems. (C) 2000 Elsevier Science Ireland Ltd. All rights reserved.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2000-03-01 | Neuroscience Letters |