# A Good Memory or a Bad One? One Brain Molecule Decides.  ## About - Author: Yasemin Saplakoglu - Title: A Good Memory or a Bad One? One Brain Molecule Decides. - Tags: #articles #inoreader #kindle #takenote - URL: https://www.quantamagazine.org/a-good-memory-or-a-bad-one-one-brain-molecule-decides-20220907/ ## Highlights These questions linger in Hao Li’s brain long after he packs up and goes home for the night. Now that he knows which network of chatty cells in his brain drives the emotions he feels, he jokes with friends about his brain pumping out neurotensin or holding it back in response to every bit of good or bad news. ---