Training and Spontaneous Reinforcement of Neuronal Assemblies by Spike Timing Plasticity.

ABSTRACT: The synaptic connectivity of cortex is plastic, with experience shaping the ongoing interactions between neurons. Theoretical studies of spike timing-dependent plasticity (STDP) have focused on either just pairs of neurons or large-scale simulations. A simple analytic account for how fast spike time correlations affect both microscopic and macroscopic network structure is lacking. We develop a low-dimensional mean field theory for STDP in recurrent networks and show the emergence of assemblies of strongly coupled neurons with shared stimulus preferences. After training, this connectivity is actively reinforced by spike train correlations during the spontaneous dynamics. Furthermore, the stimulus coding by cell assemblies is actively maintained by these internally generated spiking correlat

SUBMITTER: Ocker GK 

PROVIDER: S-EPMC7963120 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature