Abstract
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Highlights
Oscillations in electrical activity are observed in many brain networks, including the hippocampus [1,2], prefrontal cortex [3] and visual cortex [4,5], and occur in various frequency bands, ranging from fast gamma (40–80 Hz) to ultra-slow delta (0.1– 1 Hz) [6,7]
By analysing the firing dynamics in the target network for a wide range of connectivity schemes, we investigated whether and how the source network perturbed the oscillatory activity in the target network and how this perturbation depended on the strength and pattern of connections from the target to the source network
The oscillations were caused by the interactions between the excitatory and inhibitory cells and were driven by the constant depolarizing currents (CDCs) provided to all the cells
Summary
Oscillations in electrical activity are observed in many brain networks, including the hippocampus [1,2], prefrontal cortex [3] and visual cortex [4,5], and occur in various frequency bands, ranging from fast gamma (40–80 Hz) to ultra-slow delta (0.1– 1 Hz) [6,7]. Ongoing oscillations display a rich repertoire of dynamical patterns [23]. The same neuronal network can express multiple oscillation frequencies at the same time [23,24,25], or the frequency can fluctuate over time, with distinct frequencies appearing intermittently The oscillation amplitude can fluctuate, with episodes of high amplitude alternating irregularly with episodes of low amplitude [3,26,27,28]. The origin of these complex oscillation patterns is unclear, but interactions between cortical layers may contribute
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