Topic: neural excitability

Memories are thought to be stored in neural ensembles known as engrams that are specifically reactivated during memory recall. According to recent studies, memory engrams of two events that happened close in time tend to overlap in the hippocampus and the amygdala, and this overlap has been shown to support memory linking. It has been hypothesised that these overlaps arise from the mechanisms that regulate memory allocation itself, involving neural excitability, but the exact process remains unclear. Indeed, most theoretical studies focus on synaptic plasticity and little is known about the ro