Deep brain stimulation is becoming very precise. This technique allows surgeons to place electrodes in almost any area of the brain, and turn them up or down -like a radio dial or thermostat- to correct dysfunction. A dramatic look at emerging techniques, in which a woman with Parkinson's instantly stops shaking and brain areas eroded by Alzheimer's are brought back to life…

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> Andres Lozano/University of Toronto : http://bit.ly/XIOwkk
> Andres Lozano/University Health Network : http://bit.ly/YxHNqw