eLife Assessment
This valuable study provides new insights into the synchronization of ripple oscillations in the hippocampus, both within and across hemispheres. Using carefully designed statistical methods, it presents convincing evidence that synchrony is significantly higher within a hemisphere than across. However, further controlling for potential confounds related to differences in animal behavior will help clarify whether this effect is influenced by memory processing. This study will be of interest to neuroscientists studying the hippocampus and memory.