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Caltech scientists reveal how neuronal activity is timed in brain's memory-making circuits
Date:5/29/2009

t once," explains Siapas.

In addition, Siapas notes, it's unlikely that this behavior is found only in rat brains; after all, theta oscillations are ubiquitous in mammalian brains. "I would expect the traveling-wave nature of theta oscillations to be a general finding, applicable to humans as well," he says.

And while it is not known whether human hippocampal cells function as place cells, as they do in rats, "it may turn out to be the case that the human hippocampus plays a role in providing spatial cues that are important to episodic memory," Lubenov speculates. "We don't know yet."

What we do know is that, by showing that theta oscillations travel across the hippocampus, the Caltech team will likely change the way neuroscientists think about how the hippocampus works.


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Contact: Lori Oliwenstein
lorio@caltech.edu
626-395-3631
California Institute of Technology
Source:Eurekalert

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