Already robotic limbs have been developed to replace those lost by amputees. These electro-mechanical devices pick up the nerve impulses delivered to the missing body part by the brain and translate them into the equivalent hand grips or leg movements in the artificial limb. The same technology has now been used to help those who are paralyzed from the neck down to control robotic limbs and regain a measure of independence. Although these technologies are designed for those disabled or paralyzed, they could also be used by someone who has lost movement as a result of aging.
