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The eyes remember

Movement may reveal memories that the brain recalls even when a person isn’t aware of them

6:51pm, September 9, 2009

Eyewitness testimony is notoriously flaky, but new research suggests that eye movements can accurately reveal what a person remembers, even if the person isn’t aware of the memory.

In a memory test, participants’ eye movements picked the right answer even when the participant failed to, Deborah Hannula and Charan Ranganath, both of the University of California, Davis, report in the Sept. 10 Neuron. The eye movements corresponded to activity in the hippocampus, an important learning and memory center in the brain. The results suggest that eye movements can reveal unconscious memories activated in the hippocampus, the authors say.

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