Skip to main content
CNN EditionHealth
The Web     
Powered by
powered by Yahoo!

Scientists develop microchip for brain

Chip copies brain section responsible for memory, mood

Chip copies brain section responsible for memory, mood

Story Tools

LONDON, England (Reuters) -- Scientists have developed the first artificial region of the brain -- a silicon chip that mimics an area that controls memory, mood and awareness.

Devised by researchers at the University of Southern California in Los Angeles, the chip is designed to carry on the functions of the region known as the hippocampus and could one day be used to help people with brain damage.

It will first be tested on tissue from rats' brains, and then on live animals.

"If all goes well, it will then be tested in a way to help people who have suffered brain damage due to stroke, epilepsy or Alzheimer's disease," New Scientist magazine said on Wednesday.

Theodore Berger and his team developed the artificial hippocampus as a test case to see if it could be done. It has taken them nearly 10 years.

First they devised a mathematical model of how the hippocampus performs under all conditions. The next step involved building the model into a silicon chip and then interfacing the chip with the brain in laboratory studies.

"No one understands how the hippocampus encodes information. So the team simply copied its behavior," according to the magazine.

If the initial brain tissue tests are successful, Berger and his colleagues plan to begin trials in live rats within six months and then in monkeys.

"If you lose your hippocampus you only lose the ability to store new memories," Berger told the magazine.

He added that if the chip, which will sit on the outside of the skull, helps someone with a damaged hippocampus regain the ability to store new memories it will be proof that it works.

But the magazine warned that because the device would affect memory and mood, which are fundamental to identity, it raises ethical and consent issues.

"If someone can't form new memories, then to what extent can they give consent to have this implant?" the magazine added.

Copyright 2003 Reuters. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.

Story Tools
Subscribe to Time for $1.99 cover
Top Stories
Candy makers target fitness market
Top Stories
CNN/Money: Security alert issued for 40 million credit cards

International Edition
CNN TV CNN International Headline News Transcripts Advertise With Us About Us
   The Web     
Powered by
© 2005 Cable News Network LP, LLLP.
A Time Warner Company. All Rights Reserved.
Terms under which this service is provided to you.
Read our privacy guidelines. Contact us.
external link
All external sites will open in a new browser. does not endorse external sites.
 Premium content icon Denotes premium content.
Add RSS headlines.