What is the three brain?
Triune's brain refers to the hypothesis of how the human brain has evolved, and the function first designed by neuroscientist Paul D. Maclean at the age of 60. It assumes that the brain can be divided into three parts called the reptilian complex, the paleomammal complex and the neomammal complex, which originated gradually during evolution and is progressively bound to more advanced forms of thinking. He is now considered to be refuted because of the subsequent research of neurology, paleontology and related disciplines, although he retains the presence in popular culture.
According to the triune brain hypothesis, the oldest and most basic part of the human brain is a group of nerve clusters called basal ganglia, located under the cerebrium. This is called the reptilian complex, so named, because this part of the three brain was supposed to have evolved in distant evolutionary preferences for humanity. In the Triune Brain model, the reptilian instincts such as aggression, dominance and response of combat or flight are governed.
The second part, a paleomammal complex, includes structures in the brain, now referred to as a limbic system. This includes amygdalu, hippocampus and hypothalamus along with the cingle bark and parts of the cortex. Maclean claimed that these structures were managed by emotions and behavior such as reproduction, parenting and feeding. According to the hypothesis, this part of the brain first developed between early mammals. Maclean was the first neuroscientist to identify the limbic system and its importance, and the concept is still widely used in modern neuroscience despite the subsequent discrediting of the trinity hypothesis as a whole.
The third part, called the nestammal complex, is Neocortex. Neokortex is part of the cortex found exclusively in Mammals. In the Triune Brain, the nnammal complex is the latest part of the brain that develops and is responsible for higher mental functions such as language and abstract thinking.
Basal ganglie are present at all turnoverHunters, and therefore their development is probably preceded by reptiles. Similarly, the brain structures included in the paleomammal complex are not unique for mammals and many vertebrate non-vertebrates show ascribed behavior and ascribed behavior. Sauropsides, a classification including birds, reptiles and dinosaurs, were subsequently discovered that brain structures have a similar function to what Maclean called the nestammal complex, suggesting that the development of these structures also precedes mammal development. Sophisticated mental abilities, which were once considered exclusive to mammals such as tool formation, are also present in some bird species.
The thought of the brain has also lost weight due to a greater understanding of the human brain. For example, brain damage in some areas classified as part of the paleomammal complex may disrupt cognitive functions that are reportedly the only domain of the non -nammal complex. This is difficult to explain in the nervous system model you attributee All higher mental functions only one, specific parts of the brain.