Rotating image of human brain, illustrating the lateral sulcus in the brain. The term sulcus (pl. sulci) is a general descriptive term for a furrow or fissure.
Halo may refer to: 1  Halo (religious iconography), a glow or ring of light around a head or person in art. 2  Halo (series), video game franchise.
What Is a Halo? A halo vest is an orthotic, or brace, which is used to immobilize and protect the bones in the neck known as the cervical spine or c-spine. It is used when a patient needs to immobilize the neck following an injury or surgery. The halo vest system consists of a halo or ring, a body jacket or vest and rigid uprights or rods.