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.
Cortana may refer to: Cortana (software), an intelligent personal assistant created by Microsoft for Windows. Cortana (Halo), a fictional artificial intelligence character in the Halo franchise who is the AI of Master Chief who is also referred to as John and has featured in the Halo series and books.