no code implementations • 30 Nov 2021 • Ulises Pereira-Obilinovic, Johnatan Aljadeff, Nicolas Brunel
We show that for a forgetting time scale that optimizes storage capacity, the qualitative features of the network's memory retrieval dynamics are age-dependent: most recent memories are retrieved as fixed-point attractors while older memories are retrieved as chaotic attractors characterized by strong heterogeneity and temporal fluctuations.
no code implementations • 1 Nov 2019 • Johnatan Aljadeff, James D'amour, Rachel E. Field, Robert C. Froemke, Claudia Clopath
We propose that a combination of plasticity rules, 1) Hebbian, 2) acetylcholine-dependent and 3) noradrenaline-dependent excitatory plasticity, together with 4) inhibitory plasticity restoring E/I balance, effectively solves the credit assignment problem.
Neurons and Cognition Disordered Systems and Neural Networks