Illuminating complexity in serotonin neurons of the dorsal raphe nucleus

The function of serotonin in the mammalian brain has been challenging to unravel. In this issue of Neuron, Paquelet et al. (2022) employ microendoscopy to record over 2,000 dorsal raphe serotonin neurons, yielding new insights into their activity from the single neuron to the population level.

Automated summary

In this study, Paquelet et al. utilize microendoscopy to record the activity of over 2,000 dorsal raphe serotonin neurons, providing new insights into their function at both the level of individual neurons and the population.