A spiking neuron model of the basal ganglia (BG) circuit (striatum, STN, GP, SNr). Includes: parallel anatomical channels; tonic dopamine; dopamine receptors in striatum, STN, and GP; burst-firing in STN; GABAa, AMPA, and NMDA currents; effects of synaptic location. Model demonstrates selection and switching of input signals. Replicates experimental data on changes in slow-wave (<1 Hz) and gamma-band oscillations within BG nuclei following lesions and pharmacological manipulations.
Model Type: Realistic Network
Region(s) or Organism(s): Basal ganglia
Cell Type(s): Neostriatum medium spiny direct pathway GABA cell; Subthalamus nucleus projection neuron; Globus pallidus neuron; Abstract integrate-and-fire leaky neuron
Receptors: Dopaminergic Receptor
Transmitters: Dopamine; Gaba; Glutamate
Model Concept(s): Oscillations; Parkinson's; Action Selection/Decision Making; Sleep; Rebound firing
Simulation Environment: MATLAB
Implementer(s): Humphries, Mark D [m.d.humphries at shef.ac.uk]
References:
Humphries MD, Stewart RD, Gurney KN. (2006). A physiologically plausible model of action selection and oscillatory activity in the basal ganglia. The Journal of neuroscience : the official journal of the Society for Neuroscience. 26 [PubMed]