Effects of Noisy Drive on Rhythms in Networks of Excitatory and Inhibitory Neurons
- 1 March 2005
- journal article
- Published by MIT Press in Neural Computation
- Vol. 17 (3) , 557-608
- https://doi.org/10.1162/0899766053019908
Abstract
Synchronous rhythmic spiking in neuronal networks can be brought about by the interaction between E-cells and Icells (excitatory and inhibitory cells). The I-cells gate and synchronize the E-cells, and the E-cells drive and synchronize the I-cells. We refer to rhythms generated in this way as PING (pyramidal-interneuronal gamma) rhythms. The PING mechanism requires that the drive II to the I-cells be sufficiently low; the rhythm is lost when II gets too large. This can happen in at least two ways. In the first mechanism, the I-cells spike in synchrony, but get ahead of the E-cells, spiking without being prompted by the E-cells. We call this phase walkthrough of the I-cells. In the second mechanism, the I-cells fail to synchronize, and their activity leads to complete suppression of the E-cells. Noisy spiking in the E-cells, generated by noisy external drive, adds excitatory drive to the I-cells and may lead to phase walkthrough. Noisy spiking in the I-cells adds inhibition to the E-cells and may lead to s...Keywords
This publication has 59 references indexed in Scilit:
- What Determines the Frequency of Fast Network Oscillations With Irregular Neural Discharges? I. Synaptic Dynamics and Excitation-Inhibition BalanceJournal of Neurophysiology, 2003
- Synchronization in Networks of Excitatory and Inhibitory Neurons with Sparse, Random ConnectivityNeural Computation, 2003
- Synchronization of Strongly Coupled Excitatory Neurons: Relating Network Behavior to BiophysicsJournal of Computational Neuroscience, 2003
- Phase diagrams of sparsely connected networks of excitatory and inhibitory spiking neuronsNeurocomputing, 2000
- Almost-synchronous solutions for mutually coupled excitatory neuronsPhysica D: Nonlinear Phenomena, 2000
- Dynamics of Sparsely Connected Networks of Excitatory and Inhibitory Spiking NeuronsJournal of Computational Neuroscience, 2000
- Fast Global Oscillations in Networks of Integrate-and-Fire Neurons with Low Firing RatesNeural Computation, 1999
- Phase-locking in weakly heterogeneous neuronal networksPhysica D: Nonlinear Phenomena, 1998
- Asynchronous states in networks of pulse-coupled oscillatorsPhysical Review E, 1993
- Potassium conductances in hippocampal neurons blocked by excitatory amino-acid transmittersNature, 1990