Sky Evans-Martin
Research Mentor(s): Kevin Jones
Mentor Department: University of Michigan
Authors: Hassan Hosseini
Session: Session 4 (1:00pm – 1:50pm)
Presentation Type: Poster 23
Abstract
The locus coeruleus (LC) is a small area deep in the brainstem that plays a big role in keeping us alert, focused, and able to remember things. It does this by releasing a brain chemical called norepinephrine. Scientists used to think this region worked in a simple, uniform way, but new research shows that LC cells are more specialized than we thought—different groups of cells send signals to different parts of the brain and behave in distinct ways. Nearby cells that use a chemical called GABA help control how the LC functions. These GABAergic cells can adjust the LC’s activity, keeping it steady or allowing it to react quickly when needed. However, we still don’t fully understand how certain types of these nearby cells—specifically those that produce proteins called somatostatin (SST) or parvalbumin (PV)—influence the LC. This study looks at how SST and PV cells around the LC affect its activity and the release of norepinephrine. Learning more about how these cells work together could help us better understand how the brain controls attention, mood, and memory—and how this system might go wrong in mental health conditions.
