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Because electrical coupling among the neurons of the brain is much faster than chemical synaptic coupling, it is natural to hypothesize that gap junctions may play a crucial role in mechanisms underlying very fast oscillations (VFOs), i.e., oscillations at more than 80 Hz. There is now a substantial body of experimental and modeling literature supporting(More)
Putative gap junctions between pyramidal axons have been reported in the hippocampus as well as the neocor-tex. These gap junctions are indicated in very fast oscillations (VFOs, > 80 Hz) in slow-wave sleep as well as in seizures. They could also play a role in gamma oscillations (30–80 Hz) in the hippocampus and other areas. Compu-An example of re-entrant(More)
Brain states can be classified as synchronized (large amplitude low frequency oscillations) or desynchronized (small amplitude high frequency activity). [1] Synchronized states are marked by UP states/phases characterized by global spiking and DOWN states/phases are characterized by global silence in the cortex. In awake animals, desynchronized states are(More)
The interaction of neural populations within the neocor-tex is mainly characterized by which layer they located in. For instance: thalamocortical input projects to layer 4 cells, which in turn project to layer 2/3 cell. Layer 2/3 cells then forward signals onto layer 5 cells [4]. However, it is difficult to see interactions within layers, or even which(More)
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