Why one thing led to another: a hint that memory files stories by cause, not by clock
After watching a TV show, people recalled events by cause and effect more than by time order. Brain scans showed a memory network switching back on for earlier events that caused later ones.
Why it matters
Most of us assume memory works like a recording, in order from start to finish. This study hints it works more like a chain of reasons: this happened because of that. If that holds up, it suggests a simple study habit — ask why each fact follows from the last, instead of repeating them in order. It is early work, and brain scans show patterns that go together, not proof of what causes what.
Who's behind it: J. W. Antony and colleagues, California Polytechnic State University and the University of California, Davis.
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