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The ‘Triune Brain’ theory by Neuroscientist Paul MacLean — an evolutionary perspectiveThe ‘Triune Brain’ theory by Neuroscientist Paul MacLean — an evolutionary perspective
In the 1960s, American neuroscientist Paul MacLean formulated the ‘Triune Brain’ model, which is based on the division of the human brain into three distinct regions. MacLean’s model suggests the human brain is organized into a hierarchy, which itself is based on an evolutionary view of brain development. The three regions are as follows:
- Reptilian or Primal Brain (Basal Ganglia)
- Paleomammalian or Emotional Brain (Limbic System)
- Neomammalian or Rational Brain (Neocortex)
At the most basic level, the brainstem (Primal Brain) helps us identify familiar and unfamiliar things. Familiar things are usually seen as safe and preferable, while unfamiliar things are treated with suspicion until we have assessed them and the context in which they appear. For this reason, designers, advertisers, and anyone else involved in selling products tend to use familiarity as a means of evoking pleasant emotions.
How often do you feel lonely?How often do you feel lonely?
Dr Rangan Chatterjee chats with Dr Gabor Maté about his radical findings based on decades of work with patients. We’re currently living in a culture that doesn’t meet our human needs. Maté and Chatterjee delve into how our emotional stress can translate into physical chronic illnesses, and how loneliness and a lack of meaningful connection are on the rise, as are the rates of autoimmune disease and addiction.