6/ Thank you also to Hakan and Oren for their analysis wizardry, Sverre and Kristian for sharing the ribo-GCaMP8, and Teresa for her X-ray fluoroscopy expertise. I am also beyond grateful for @markandermann.bsky.social for all of his guidance, support, and excitement throughout the years.
5/ Huge thanks to Kiersten and Hannah (Team PBN!) – this project was a ton of work and could not have been done without them.
4/ Other spatially clustered LPBN neurons were sensitive to arousal and body movement. Together, our results define functional specialization in LPBN and highlight a platform for studying interoception during behavior. Check out the full manuscript for many other cool findings!
3/ Indeed, by imaging the same neurons across days, we found that Late Ensure neurons are sensitive to stomach stretch, malaise, and satiety signals. These Early vs. Late Ensure neurons were also spatially organized within LPBN.
2/ We coined neurons that became active at the onset of consumption as “Early Ensure neurons” and those that became active 1-3 s later as “Late Ensure neurons.” We suggest that Early Ensure neurons are sensitive to oral signals, while Late Ensure neurons are sensitive to post-ingestive signals.
1/ Food (Ensure) consumption drove a seconds-long wave of activity across LPBN, with dynamics that mirrored movement of food through the upper GI tract observed using X-ray fluoroscopy.
