By Silvia Scarpetta (University of Salerno, Italy). November 8th, 2022. Recent experimental results and theoretical models have supported the idea that brain self-organizes to criticality [1], to maximize dynamical range and computational capabilities. In humans, sleep plays a crucial role to re-tune the system towards criticality [2]. We explore neural avalanches, and the scaling relation … Continue reading Spotlight 2022#4 – Silvia SCARPETTA – Critical Brain Dynamics in EEG During Sleep
The meeting will take place on three days in hybrid format. Presentations will be live, with substantial discussion time and recorded for offline (re-)viewing. A choice of contributed abstract will be selected for spotlight presentations. Posters (online and in presence) are on show all time, questions for online posters can be posted as comments. Discussion … Continue reading Meeting program
by Silvia Scarpetta (Salerno). Many experimental results, both in-vivo and in-vitro, support the idea that the brain cortex operates near a critical point, and at the same time works as associative memory, with a reservoir of multiple precise spatio-temporal patterns. However the mechanisms at the basis of these observations are still not clear. We study a model of spiking neurons, with recurrent connections that result from learning a set of spatio-temporal periodic patterns with a spike-timing dependent plasticity rule and a global inhibition. We investigate the ability of the network to store and selectively replay multiple spatio-temporal patterns of spikes, with a combination of spatial population and phase-of-spike code. After the learning stage, we study the dynamics of the network induced by a brief cue stimulation, and we evaluate the storage capacity
