Psychologists have studied what happens in the brain when the subject is in a state of flow. Daniel Levitin reports: “During flow, two key regions of the brain deactivate: the portion of the prefrontal cortex responsible for self-criticism, and the amygdala, the brain’s fear center.”
Silence the inner critic when drafting.
Janzer, Anne. The Writer’s Process: Getting Your Brain in Gear (p. 35, 37). Cuesta Park Consulting. Kindle Edition.