triune

According to Feldman Barrett, the triune brain theory is simplistic, but the same lens has been applied to other aspects of the brain.

In the mid-1900s, Paul MacLean, an neuroscientist at Yale and then the National Institute of Mental Health, began developing the triune brain hypothesis.

The other myth about the lizard brain, or the triune brain, is that you've got some sort of unevolved part of your brain that would be akin to something that a lizard might be using.

But Christianity introduced a new theological element to the scene — a divine Christ and triune Godhead — which proved unacceptable to both Judaism and Islam.

Paul MacLean first proposed the idea of the “lizard brain” in 1957 as part of his triune brain concept, theorizing that the human brain supposedly consists of three sections, nested based on their evolutionary age.