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Brain Health

How to ‘take over’ a brain

by CogniFit January 7, 2013
written by CogniFit January 7, 2013
How to ‘take over’ a brain

How to ‘take over’ a brain.

The hottest field in science this past decade has been neuroscience. That explosion in research, and our understanding of the human brain, was largely fueled by a new technology called functional magnetic resonance imaging (fMRI) that became widely available in the 1990s. Well look out! Another technology-based neuroscience revolution is in the making, this one perhaps even bigger. The term to watch for in 2013 is “optogenetics.” It’s not a sexy term, but it is a very sexy technology.

Optogenetics involves inserting fiber-optics tools into an animal’s brain, in order to control the target neurons using pulses of light as a trigger.

In order for the method to work, the neurons have to be re-engineered so that they react to the light. That was made possible by the amazing discovery of a kind of protein that can be used to turn neurons on and off in response to light.

The exotic light-sensitive protein is not present in normal neurons, so scientists designed a way to insert it. That is accomplished through a type of gene engineering called “transfection” that employs “vectors” such as viruses to infect the target neuron, and, once there, to insert genetic material that will cause the neuron to manufacture the light-sensitive protein.

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