Fig. 5: Properties of gamma bursts in a neural circuit model.
From: Lévy walk dynamics explain gamma burst patterns in primate cerebral cortex
a Raw (red) and gamma-band filtered (30–80 Hz, blue) LFP time series. Lower panel shows the corresponding Morlet wavelet spectrogram of the gamma-band LFP time series. Black dashed lines denote gamma bursts. b Distribution of spikes of model excitatory neurons at different phases of gamma bursts, indicating phase-locking to gamma bursts. c Left: time series of excitatory and inhibitory inputs received by one model neuron over a period of 1 s. Note correlated and proportional fluctuations in excitation and inhibition. Right: probability distribution of excitatory currents received by a single model neuron (blue). Magenta dashed line denotes a fitted Lévy stable function (\(\alpha\) = 1.216) of the distribution. Normal distribution (black dashed line) and exponential function (green dashed line) are shown to be inadequate to describe the distribution.
