" ... We investigated oscillatory control using a multiscale computer model of hippocampal CA3, where each cell class (pyramidal, basket, and oriens-lacunosum moleculare cells), contained type-appropriate isoforms of Ih. Our model demonstrated that modulation of pyramidal and basket Ih allows tuning theta and gamma oscillation frequency and amplitude. Pyramidal Ih also controlled cross-frequency coupling (CFC) and allowed shifting gamma generation towards particular phases of the theta cycle, effected via Ih’s ability to set pyramidal excitability. ..."
Model Type: Realistic Network
Region(s) or Organism(s): Hippocampus
Cell Type(s): Hippocampus CA3 pyramidal GLU cell; Hippocampus CA3 interneuron basket GABA cell; Hippocampus CA3 stratum oriens lacunosum-moleculare interneuron
Currents: I Na,t; I A; I K; I K,leak; I h; I K,Ca; I Sodium; I Potassium
Receptors: GabaA; AMPA; NMDA; Glutamate
Model Concept(s): Oscillations; Brain Rhythms; Conductance distributions; Multiscale
Simulation Environment: NEURON; Python
Implementer(s): Lazarewicz, Maciej [mlazarew at gmu.edu]; Neymotin, Sam [Samuel.Neymotin at nki.rfmh.org]
References:
Neymotin SA et al. (2013). Ih tunes theta/gamma oscillations and cross-frequency coupling in an in silico CA3 model. PloS one. 8 [PubMed]