Electric Surprise

Stimulating brain cells may be trickier than we thought

Scientists and doctors have long used electricity to both study and treat the brain. But a report in the August 27, 2009, issue of Neuron indicates that the brain's response to electricity is exceptionally complex. Using a new type of optical imaging, Harvard Medical School researchers observed neurons as they were stimulated by an electrode. Instead of activating a small sphere of surrounding neurons as expected, the electrodes caused sparse strings of neurons to flre across the brain. The flnding suggests that brain surgeons and the designers of neural prosthetics have a much smaller margin of error than previously thought)shifting an electrode even slightly could activate an entirely different set of neurons

or subscribe to access other articles from the January 2010 publication.
Digital Issue $7.95
Digital Subscription $19.99 Subscribe
Share this Article:


You must sign in or register as a member to submit a comment.

Celebrate our 170th Anniversary with us!

Get 2 years of All Access for just $170

Save $28 now! >


Email this Article