Dr. Rezai is an internationally renown neurosurgeon advancing the use of brain chip implants in deep brain stimulation and neuromodulation to treat Parkinson’s disease, obsessive-compulsive disorder, Alzheimer’s disease and traumatic brain injury. Rezai led a surgical team using a chip implant to decode and transmit signals from the motor cortex of a patient’s brain to bypass spinal injury and restore limb movement, giving a paralyzed man the use of his hand. This surgical procedure presented a technological and breakthrough in neural engineering as the first ever account of limb reanimation.