Our results suggestthat amplitude fluctuations are a general property of oscillatory neuronal networks that can arise through background inputfrom areas external to the network.Citation: Avella Gonzalez OJ, van Aerde KI, van Elburg RAJ, Poil S-S, Mansvelder HD, et al. (2012) External Drive to Inhibitory Cells Induces Alternating Episodes ofHigh- and Low-Amplitude Oscillations.