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There is suggestive evidence that pyramidal cell axons in neocortex may be coupled by gap junctions into an "axonal plexus" capable of generating very fast oscillations (VFOs) with frequencies exceeding 80 Hz. It is not obvious, however, how a pyramidal cell in such a network could control its output when action potentials are free to propagate from the(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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