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The triune brain consists of the reptilian complex (basal ganglia), the paleomammalian complex (limbic system), and the neomammalian complex , viewed each as independently conscious, and as structures sequentially added to the forebrain in the course of evolution. According to the model, the basal ganglia are in charge of primal instincts, the ...
In the 1960s, Dr. MacLean enlarged his theory to address the human brain's overall structure and divided its evolution into three parts, an idea that he termed the triune brain. In addition to identifying the limbic system, he hypothesized a supposedly more primitive brain called the R-complex, related to reptiles, which controls basic ...
This article incorporates text in the public domain from page 767 of the 20th edition of Gray's Anatomy (1918) ^ a b Webb, Wanda G. (2017-01-01), Webb, Wanda G. (ed.), "2 - Organization of the Nervous System I" , Neurology for the Speech-Language Pathologist (Sixth Edition) , Mosby, pp. 13– 43, doi : 10.1016/b978-0-323-10027-4.00002-6 , ISBN ...
The human brain is the central organ of the nervous system, and with the spinal cord, comprises the central nervous system. It consists of the cerebrum, the brainstem and the cerebellum. The brain controls most of the activities of the body, processing, integrating, and coordinating the information it receives from the sensory nervous system ...
The Reptilian Brain was referred to by MacLean as the ‘R Complex’ or the primitive brain. [5] This is the oldest brain in the Triune Theory and anatomically is made up of the brain stem and the cerebellum. [10] In reptiles, both the brain stem and cerebellum dominate and are the control centres for basic function.
Superficial anatomy or surface anatomy is important in human anatomy being the study of anatomical landmarks that can be readily identified from the contours or other reference points on the surface of the body. [1] With knowledge of superficial anatomy, physicians gauge the position and anatomy of deeper structures.
Like most parts of the brain, the basal ganglia consist of left and right sides that are virtual mirror images of each other. In terms of anatomy, the basal ganglia are divided into four distinct structures, depending on how superior or rostral they are (in other words depending on how close to the top of the head they are): Two of them, the ...
The ways in which the human brain differs from other brains are covered in the human brain article. Several topics that might be covered here are instead covered there because much more can be said about them in a human context. The most important that are covered in the human brain article are brain disease and the effects of brain damage.