Static and dynamic state feedback control model of basal ganglia - thalamocortical loops
A. Lõrincz
International Journal of Neural Systems,
in press (1997)
Abstract
It is argued that a novel control architecture, the Static and
Dynamic State (SDS) feedback scheme, which utilizes speed-field tracking,
exhibits global stability, and allows on-line tuning by any adaptation
mechanism without cancelling stability if certain structural conditions
are met, can be viewed as a model of basal ganglia-thalamocortical
loops since (1) the SDS scheme predicts the neuronal groups that fit neuronal
classification in the supplementary motor area, the motor cortex
and the
putamen, (2) the structural stability conditions require parallel channels, a
feature that these loops provide, and (3) the SDS scheme predicts two major
disorders that can be identified as Parkinson's and Huntington's diseases.
Simulations suggests that the basal ganglia work outside the realm of the
stability condition allowed by the robustness of the scheme and required for
increased computation speeds.
