How can we see what neurons deep in the cortex are doing during behavior? Now all cortical layers of a freely moving mouse can be imaged – even in lit environment. Artwork by @somedonkey https://mpinb.mpg.de/en/research-groups/groups/behavior-and-brain-organization/news/neuroscientists-illuminate-how-brain-cells-deep-in-the-cortex-operate-in-freely-moving-mice.html