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Adaptive learning by extremal dynamics and negative feedback
Per Bak, Dante R Chialvo
We describe a mechanism for biological learning and adaptation based on two simple principles: (I) Neuronal activity propagates only through the network's strongest synaptic connec…
Large Scale-Invariant Fluctuations in Normal Blood Cell Counts: A sign of criticality?
Carlos A. Perazzo, Elmer A. Fernandez, Dante R. Chialvo +1
All types of blood cells are formed by differentiation from a small self-maintaining population of pluri-potential stem cells in the bone marrow. Despite abundant information on th…
Noise in neurons is message-dependent
Guillermo A. Cecchi, Mariano Sigman, Jose-Manuel Alonso +3
Neuronal responses are conspicuously variable. We focus on one particular aspect of that variability: the precision of action potential timing. We show that for common models of no…