Criticality in Neural Systems by Dietmar Plenz, Ernst Niebur

By Dietmar Plenz, Ernst Niebur

Leading gurus within the box overview present wisdom of serious habit in mind functionality, either experimental and theoretical. The publication starts by means of summarizing experimental proof for self-organized criticality within the mind. accordingly, contemporary breakthroughs in modeling of neuronal circuits to set up self-organized criticality are defined. ultimately, the significance of serious dynamics for mind functionality is highlighted.

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K) Cutoff of the power law changes with array size used for analysis, and thus reflects the limitation of the observation window. Broken line: slope of power law −3/2 as guide to the eye. 13 14 2 Criticality in Cortex: Neuronal Avalanches and Coherence Potentials and therefore the question arises why such temporal discretization is required in the first place. , [84]). In the case of real cortical networks and given current technology, though, population activity, such as captured in the LFP, can only be sampled in spatially discrete locations.

B) Corresponding relationships describe the 1 101 1 10 2 10 3 Main avalanche size s (μV) organization of neuronal avalanches. 5 (n = 6 slowly rocked cortex cultures). Middle: Decay in avalanche probability following a main avalanche. The power law with slope of −1 does not depend on the trigger avalanche size s (single cortex culture). 7d; triangles: awake macaque monkeys; broken line: slope of −1). For further details, see [34]. processing through cascading activity, the dynamical concepts of oscillations and neuronal avalanches need to be reconciled.

Note slope of −3/2 (broken line) at optimal dopamine D1 receptor stimulation and cutoff (arrow; for details, see [72]. (b) Spontaneous neuronal avalanches in early differentiated superficial layers in the rat in vivo. 4 mm −2 10 10 600 27 −3/2 1 mm 10 100 Avalanche size sLFP (μV) 10 0 PM 2 (b) Resting activity, awake macaque monkey (LFP) P(s) 16 0 1 10 10 Avalanche size ssensor (n) 2 day 13). Right: Corresponding power law in neuronal avalanche sizes (for details, see [81]). (c) Neuronal avalanches in the awake macaque monkey.

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