The ability to know where your joints and limbs are in space is called proprioception. When patients undergo amputations, they lose much of this ability, which can affect their movement and their connection between the mind and body. A newly developed surgical process called the agonist-antagonist myoneural interface (AMI), developed by researchers at MIT, aims to solve something deeper. The interface reconnects two muscles, known as the agonist and antagonist muscles, which