3-D Chip Promises Better Brain Control, Brown University Study  
12/5/2012 8:03:51 AM

Optogenetics, which pairs light-sensitive genes with a light source to selectively switch brain cells on or off, has shown promise as a research tool and a potential therapy. But the technology mostly delivers light to one spot, whereas brain activity usually involves complex sequences of activation in different locations. A new device takes optogenetics into three dimensions, with the ability to send patterns of light to neurons at various co├Ârdinates in the brain.