Fig. 6

Oscillations in full and reduced networks of reciprocally coupled pyramidal cells and interneurons. A, B Illustrate topologies of reduced networks that generate “pure” ING and “pure” PING, respectively, while C highlights the topology of a “full” network that could in principle generate either ING or PING oscillations or mixtures of both. D, E Frequency of pure ING-rhythm generated by the reduced network in A (blue line), pure PING-rhythm generated by the reduced network in b (red line), and rhythms generated by the full network in C (green line) as a function of mean current to I-cells I_0,I and as function of mean current to E-cells I_0,E, respectively. D Results for networks with type-I interneurons while E shows results for networks with type-II interneurons. Pyramidal cells are modeled as type-I Hodgkin–Huxley neurons