A unified framework to model synaptic dynamics during the sleep-wake cycle.

ABSTRACT: Understanding synaptic dynamics during the sleep-wake cycle in the cortex is crucial yet remains controversial. The synaptic homeostasis hypothesis (SHY) suggests synaptic depression during non-rapid eye movement (NREM) sleep, while other studies report synaptic potentiation or synaptic changes during NREM sleep depending on activities in wakefulness. To find boundary conditions between these contradictory observations, we focused on learning rules and firing patterns that contribute to the synaptic dynamics. Using computational models considering mammalian cortical neurons, we found that under Hebbian and spike-timing dependent plasticity (STDP), wake-like firing patterns decrease synaptic weights, while sleep-like patterns strengthen synaptic weights. We refer to this tendency as Wake In

SUBMITTER: Kinoshita FL 

PROVIDER: S-EPMC12161594 | biostudies-literature | 2025 Jun

REPOSITORIES: biostudies-literature