Three levels of mind – how they operate independently and as a whole.

The triune brain concept  has been around for more than fifty years. Paul McLean (1950’s) proposed that the human brain has three different areas that correspond with the evolution of man. The brainstem is equivalent to the reptilian brain, the limbic system developed in the mammals, and the cortex developed to make up the three … More Three levels of mind – how they operate independently and as a whole.