title: A Model of Synaptic Reconsolidation.
abstract: Reconsolidation of memories has mostly been studied at the behavioral and molecular level. Here, we put forward a simple extension of existing computational models of synaptic consolidation to capture hippocampal slice experiments that have been interpreted as reconsolidation at the synaptic level. The model implements reconsolidation through stabilization of consolidated synapses by stabilizing entities combined with an activity-dependent reservoir of stabilizing entities that are immune to protein synthesis inhibition (PSI). We derive a reduced version of our model to explore the conditions under which synaptic reconsolidation does or does not occur, often referred to as the boundary conditions of reconsolidation. We find that our computational model of synaptic reconsolidation displays complex boundary conditions. Our results suggest that a limited resource of hypothetical stabilizing molecules or complexes, which may be implemented by protein phosphorylation or different receptor subtypes, can underlie the phenomenon of synaptic reconsolidation.
authors.affiliation: School of Computer and Communication Sciences and Brain Mind Institute, School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne Lausanne, Switzerland.
authors.forename: David B
authors.initials: DB
authors.lastname: Kastner
authors.affiliation: School of Computer and Communication Sciences and Brain Mind Institute, School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne Lausanne, Switzerland.
authors.forename: Tilo
authors.initials: T
authors.lastname: Schwalger
authors.affiliation: School of Computer and Communication Sciences and Brain Mind Institute, School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne Lausanne, Switzerland.
authors.forename: Lorric
authors.initials: L
authors.lastname: Ziegler
authors.affiliation: School of Computer and Communication Sciences and Brain Mind Institute, School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne Lausanne, Switzerland.
authors.forename: Wulfram
authors.initials: W
authors.lastname: Gerstner
keywords: memory dynamics; neuron modeling; reconsolidation; reduced model; synaptic plasticity