How neurons represent navigational variables is studied at a wide range of ensemble scales - from single neurons to small groups to whole populations. We divided them into 6 views.
How we define these ensembles is somewhat based in physiology, but largely based on analysis preferences and experimental conditions.
Different ensemble views can lead to vastly different conclusions, and particularly fascinating findings have arisen from recent papers that examine coding from multiple views.
We suggest that ensemble definitions be broadened to fully capture how the brain works without superimposing our own biases of how we think the brain should work.
Many thanks to @giocomo for inviting me to write this with her and allowing me to explore a topic I'm fascinated by!