An imaginary "little person" within the brain who was thought to perceive objects and events and to make decisions. Sometimes a representation of the body on the motor or somatosensory cortex.
A little person residing within the brain, from where he/she governs human behavior (based on ancient Egyptian beliefs).
The concept of a homunculus (Latin for "little man", sometimes spelled "homonculus," plural "homunculi") is often used to illustrate the functioning of a system.