Thanks, that explains a lot of things!

Could it be that photometry averages two different populations, one that is responding to reward onset, one that increase at CS+ time? (Somehow remind me of this paper pmc.ncbi.nlm.nih.gov/articles/PMC...) Or did I just misread the old papers?

Very cool data! Congrats! I have so many questions!
First one that pop to my mind: I'm suprised to see that DA and GABA neurons keep firing at the reward time, even during 'late' phase. My understanding of classical Schultz results were that the response to reward faded away with learning?

Ps: Does anyone know of a project to translate this in French?
I have a lot of relatives that could be very interested, but don't necessarily have the English fluency to grasp everything.
I'd be happy to help!

The authors that I found on bluesky:
@lewan.bsky.social @karmaos.bsky.social @noupside.bsky.social @karmaos.bsky.social @philippmarkolin.bsky.social @chrischirp.bsky.social @johnfocook.bsky.social
Thanks for the great work !