作者
Kevin Gurney, Tony J Prescott, Peter Redgrave
发表日期
2001/5
期刊
Biological cybernetics
卷号
84
页码范围
401-410
出版商
Springer-Verlag
简介
We present a biologically plausible model of processing intrinsic to the basal ganglia based on the computational premise that action selection is a primary role of these central brain structures. By encoding the propensity for selecting a given action in a scalar value (the salience), it is shown that action selection may be re-cast in terms of signal selection. The generic properties of signal selection are defined and neural networks for this type of computation examined. A comparison between these networks and basal ganglia anatomy leads to a novel functional decomposition of the basal ganglia architecture into `selection' and `control' pathways. The former pathway performs the selection per se via a feedforward off-centre on-surround network. The control pathway regulates the action of the selection pathway to ensure its effective operation, and synergistically complements its dopaminergic modulation …
引用总数
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K Gurney, TJ Prescott, P Redgrave - Biological cybernetics, 2001