" ... In single Purkinje cells, spontaneous and synaptically evoked dendritic calcium bursts come in a variety of shapes with a variable number of spikes. The mechanisms causing this variability have never been investigated thoroughly. In this study, a detailed computational model employing novel simulation routines is applied to identify the roles that stochastic ion channels, spatial arrangements of ion channels and stochastic intracellular calcium have towards producing calcium burst variability. … Our findings suggest that stochastic intracellular calcium mechanisms play a crucial role in dendritic calcium spike generation and are, therefore, an essential consideration in studies of neuronal excitability and plasticity."
Region(s) or Organism(s): Cerebellum
Cell Type(s): Cerebellum Purkinje GABA cell
Simulation Environment: STEPS (web link to model)
Anwar H, Hepburn I, Nedelescu H, Chen W, De Schutter E. (2013). Stochastic calcium mechanisms cause dendritic calcium spike variability. The Journal of neuroscience : the official journal of the Society for Neuroscience. 33 [PubMed]