Karen Young Kreeger | Feb 2, 1997 | 10 min read
Sidebar: Society for Neuroscience NEW MESSENGERS: Caltech’s Erin Schuman and colleagues discovered that one form of nitric oxide is important to long-term potentiation. Can you recall where you were when you heard about the explosion of the space shuttle Challenger? Why is it that, almost universally, people can remember with vivid and instantaneous detail this tragic event when they can't recall what they had for dinner just days before? How are some memories indelibly hard-wired into o