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JUNE 05, 1998 How New Parkinson's Technique Works By The Associated Press How the Activa Parkinson's Control Therapy is implanted: Doctors drill through the skull and implant an electrode into the subthalamic nucleus or the globus pallidus, deep sections of the brain where Parkinson's motor-control symptoms appear to originate. A wire runs just under the scalp to the collarbone, where a battery-powered, pacemaker-sized generator is implanted. It sends electrical waves to the electrode, which emits tiny, constant shocks. An electrode implanted on the left side of the brain controls movement in the right side of the body, and vice versa. Patients who experience total-body Parkinson's symptoms would need two implants. -- Judith Richards, London, Ontario, Canada [log in to unmask]