The Triune Brain is a hypothesis proposed by Paul MacLean about the traces of evolution existing in the structure of the human brain. The hypothesis conceives the brain as a system consisting of three subsystems, all of which originated from separate points of evolutionary history. The systems are therefore not in a state of perfect equilibrium, since they actually are three relatively independent systems constituting a bigger one.
The triunebrain is a model proposed by Paul D. MacLean to explain the function of traces of evolution existing in the structure of the human brain.
The R-complex, comprised of the brain stem and cerebellum, is similar to the reptilian brain in that it controls basic, instinctive survival behavior and thinking.
However, as the hypothesis conceives the brain as a system consisting of three subsystems, all of which originated from separate points of evolutionary history, the systems are therefore not in a state of perfect equilibrium, since they actually are three relatively independent systems constituting a bigger one.
It is referred to as the "triunebrain theory" because MacLean suggests that the human brain is actually three brains in one.
The R-complex consists of the brain stem and the cerebellum.
Because the reptilian brain is primarily concerned with physical survival, the behaviors it governs have much in common with the survival behaviors of animals.
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