Mann, Е. О. et al. "Perisomatic feedback inhibition underlies cholinergically induced fast network oscillations in the rat hippocampus in vitro". Neuron, 45, 105–17 (2005). Fisahn, A. et al. "Cholinergic induction of network oscillations at 40Hz in the hippocampus in vitro". Nature, 394, 186–9 (1998).