Synaptic balance due to homeostatically self-organized quasicritical dynamics
Mauricio Girardi-Schappo, Ludmila Brochini, Ariadne A. Costa, Tawan T. A. Carvalho, Osame Kinouchi
Abstract
Asynchronous irregular firing and neuronal avalanches are distinguished ways to look at the brain's spontaneous activity. By adding homeostatic adaptation in inhibitory synapses and firing thresholds, the system's critical point turns into a global attractor of the dynamics where excitatory and inhibitory synaptic inputs nearly cancel each other. The remainder fluctuations are quasi-critical neuronal avalanches happening through an asynchronous irregular firing pattern. The paper shows that these two phenomena are equivalent.
Topics & Concepts
NeuroscienceExcitatory postsynaptic potentialAttractorInhibitory postsynaptic potentialAsynchronous communicationDynamics (music)Homeostatic plasticityTransient (computer programming)Balance (ability)Nerve netPhysicsSynaptic plasticitySynaptic scalingAdaptation (eye)Computer scienceNegative feedbackControl theory (sociology)Point (geometry)Network dynamicsBiological neural networkNeurotransmissionOrder (exchange)BiologySynapseSynchronization (alternating current)Premovement neuronal activityAperiodic graphNeural dynamics and brain functionAdvanced Memory and Neural ComputingNeural Networks and Reservoir Computing