"Brain Resets Connections in Early Sleep Stages"

A study on zebrafish reveals that during the first half of sleep, the brain weakens new synaptic connections formed while awake, supporting the Synaptic Homeostasis Hypothesis. This process does not continue into the second half of the night, leaving questions about its purpose. The research highlights the importance of sleep in synaptic pruning, essential for cognitive performance and learning. Further studies are needed to understand the functions of different sleep stages and their impact on brain function.