Characterizing information transmission in cerebellar granule neuron

At the cellular scale, single-neurons process information mainly through spikes or action potentials [1]. Although the types of synaptic plasticity and the range of times cales over which they operate suggest that synapses have a more active role in information processing, the parameter space still remains unexplored. We used a mathematical model of cerebellar granule cell to explore information transmission in mossy fibre - granule cell synapse of the cerebellum. The impact of plasticity changes in excitatory synaptic release probability and variation in intrinsic excitability of granule cell was studied combining the modulatory effects of inhibition. We explore the changes in pre and post synaptic factors and report their influence on first spike latency and spike amplitude, revealing the indicators of information encoding in individual neurons [2].

[1]  R. Silver,et al.  Shunting Inhibition Modulates Neuronal Gain during Synaptic Excitation , 2003, Neuron.

[2]  Egidio D'Angelo,et al.  Differential induction of bidirectional long‐term changes in neurotransmitter release by frequency‐coded patterns at the cerebellar input , 2009, The Journal of physiology.

[3]  G. Foffani,et al.  Studying the role of spike timing in ensembles of neurons , 2005, Conference Proceedings. 2nd International IEEE EMBS Conference on Neural Engineering, 2005..

[4]  S. Thorpe,et al.  Spike times make sense , 2005, Trends in Neurosciences.

[5]  Egidio D'Angelo,et al.  Fast-Reset of Pacemaking and Theta-Frequency Resonance Patterns in Cerebellar Golgi Cells: Simulations of their Impact In Vivo , 2007, Frontiers in cellular neuroscience.

[6]  V. Braitenberg Is the cerebellar cortex a biological clock in the millisecond range? , 1967, Progress in brain research.

[7]  E. D’Angelo,et al.  Increased neurotransmitter release during long‐term potentiation at mossy fibre–granule cell synapses in rat cerebellum , 2004, The Journal of physiology.

[8]  V Taglietti,et al.  Theta-Frequency Bursting and Resonance in Cerebellar Granule Cells: Experimental Evidence and Modeling of a Slow K+-Dependent Mechanism , 2001, The Journal of Neuroscience.

[9]  Javier F. Medina,et al.  Computer simulation of cerebellar information processing , 2000, Nature Neuroscience.

[10]  Thierry Nieus,et al.  LTP regulates burst initiation and frequency at mossy fiber-granule cell synapses of rat cerebellum: experimental observations and theoretical predictions. , 2006, Journal of neurophysiology.

[11]  E. D’Angelo,et al.  Beyond parallel fiber LTD: the diversity of synaptic and non-synaptic plasticity in the cerebellum , 2001, Nature Neuroscience.

[12]  Giovanni Naldi,et al.  Axonal Na+ channels ensure fast spike activation and back-propagation in cerebellar granule cells. , 2009, Journal of neurophysiology.

[13]  M. Häusser,et al.  Integration of quanta in cerebellar granule cells during sensory processing , 2004, Nature.

[14]  Thierry Nieus,et al.  Long-term potentiation of synaptic transmission at the mossy fiber-granule cell relay of cerebellum. , 2005, Progress in brain research.

[15]  Alexander Borst,et al.  Information theory and neural coding , 1999, Nature Neuroscience.

[16]  Henry Markram,et al.  Coding of temporal information by activity-dependent synapses. , 2002, Journal of neurophysiology.

[17]  Egidio D'Angelo,et al.  Tactile Stimulation Evokes Long-Term Synaptic Plasticity in the Granular Layer of Cerebellum , 2008, The Journal of Neuroscience.

[18]  Olivier J. M. D. Coenen,et al.  Model of granular layer encoding in the cerebellum , 2004, Neurocomputing.

[19]  Nicholas T. Carnevale,et al.  The NEURON Simulation Environment , 1997, Neural Computation.

[20]  Fabrizio Gabbiani,et al.  Burst firing in sensory systems , 2004, Nature Reviews Neuroscience.

[21]  K. Doya,et al.  Unsupervised learning of granule cell sparse codes enhances cerebellar adaptive control , 2001, Neuroscience.

[22]  E. Ahissar,et al.  Encoding of Vibrissal Active Touch , 2003, Neuron.

[23]  E. D'Angelo,et al.  Long-Term Potentiation of Intrinsic Excitability at the Mossy Fiber–Granule Cell Synapse of Rat Cerebellum , 2000, The Journal of Neuroscience.

[24]  J. Albus A Theory of Cerebellar Function , 1971 .

[25]  Egidio D'Angelo,et al.  The Critical Role of Golgi Cells in Regulating Spatio-Temporal Integration and Plasticity at the Cerebellum Input Stage , 2008, Front. Neurosci..

[26]  William Bialek,et al.  Reading a Neural Code , 1991, NIPS.