Final answer:
Closure is the term for when our brain fills in missing pieces. It is a principle of the Gestalt psychology.
Step-by-step explanation:
The term for when our brain fills in missing pieces is called closure. Closure is one of the principles of Gestalt psychology, which suggests that we organize our perceptions into complete objects rather than as a series of parts. For example, if we see a circle with a small section missing, we may still perceive it as a complete circle.This phenomenon of closure allows our brains to create a sense of wholeness and coherence from incomplete visual information, highlighting the brain's remarkable ability to recognize and interpret patterns.