TY - GEN
T1 - Evidence for a forward dynamics model in human adaptive motor control
AU - Bhushan, Nikhil
AU - Shadmehr, Reza
PY - 1999/1/1
Y1 - 1999/1/1
N2 - Based on computational principles, the concept of an internal model for adaptive control has been divided into a forward and an inverse model. However, there is as yet little evidence that learning control by the CNS is through adaptation of one or the other. Here we examine two adaptive control architectures, one based only on the inverse model and other based on a combination of forward and inverse models. We then show that for reaching movements of the hand in novel force fields, only the learning of the forward model results in key characteristics of performance that match the kinematics of human subjects. In contrast, the adaptive control system that relies only on the inverse model fails to produce the kinematic patterns observed in the subjects, despite the fact that it is more stable. Our results provide evidence that learning control of novel dynamics is via formation of a forward model.
AB - Based on computational principles, the concept of an internal model for adaptive control has been divided into a forward and an inverse model. However, there is as yet little evidence that learning control by the CNS is through adaptation of one or the other. Here we examine two adaptive control architectures, one based only on the inverse model and other based on a combination of forward and inverse models. We then show that for reaching movements of the hand in novel force fields, only the learning of the forward model results in key characteristics of performance that match the kinematics of human subjects. In contrast, the adaptive control system that relies only on the inverse model fails to produce the kinematic patterns observed in the subjects, despite the fact that it is more stable. Our results provide evidence that learning control of novel dynamics is via formation of a forward model.
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M3 - Conference contribution
AN - SCOPUS:84898940678
SN - 0262112450
SN - 9780262112451
T3 - Advances in Neural Information Processing Systems
SP - 3
EP - 9
BT - Advances in Neural Information Processing Systems 11 - Proceedings of the 1998 Conference, NIPS 1998
PB - Neural information processing systems foundation
T2 - 12th Annual Conference on Neural Information Processing Systems, NIPS 1998
Y2 - 30 November 1998 through 5 December 1998
ER -