lizard brain
The term "lizard brain" is used to describe the most primitive part of the human brain, responsible for basic survival instincts and impulsive behaviors.
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Definition
C1Neuroscience
(technical)The most primitive part of the brain, responsible for basic survival functions and instinctual behaviors.
Example
- The lizard brain controls our most basic survival functions, such as heartbeat and breathing.
C1Psychology
(metaphorical)The part of a person's psyche driven by instinct and impulse rather than rational thought.
Example
- When faced with danger, his lizard brain took over, and he ran without thinking.
Similar
Terms that have similar or relatively close meanings to "lizard brain":