6533b7d6fe1ef96bd12671d9
RESEARCH PRODUCT
Hand trajectory formation during whole body reaching movements in man.
Guy CheronCharalambos PapaxanthisJoseph McintyreThierry Pozzosubject
AdultWrist Jointmedicine.medical_specialtyKnee JointMovementKinematicsWristPostural controlPhysical medicine and rehabilitationmedicineHumansPostural BalanceCommunicationMovement (music)business.industryShoulder JointGeneral NeuroscienceBody movementHandTrunkKinesismedicine.anatomical_structureTrajectoryHip JointWhole bodybusinessGeologydescription
End-effector trajectory formation was studied during a reaching movement using the whole body. The movements of various parts of the body were measured with the optoelectronic ELITE system. Wrist reaching movement paths showed noticeable curvatures. The analysis of various marker onset latencies revealed that the wrist was the last to move, always after the head, knee or trunk, suggesting a subordinate role of the focal component with respect to the primary role of the equilibrium component. These results suggest that reaching wrist movements are subjected to whole-body equilibrium constraints in addition to constraints placed upon end-effector kinematics or the dynamic optimization of upper-limb movements.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1998-03-21 | Neuroscience letters |