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"Reptilian complex" (also known as the "R-complex", "reptilian brain" or "lizard brain") was the name MacLean gave to the basal ganglia, structures derived from the floor of the forebrain during development. The term derives from the idea that comparative neuroanatomists once believed that the forebrains of reptiles and birds were dominated by ...
MacLean was an American physician and neuroscientist who formulated his model in the 1960s, which was published in his own 1990 book The Triune Brain in Evolution. [1] MacLean's three-part theory explores how the human brain has evolved from ancestors over millions of years, consisting of the reptilian, paleomammalian and neomammalian complexes.
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 ...
After the disease had progressed into a larger epidemic, the tribal people asked Charles Pfarr, a Lutheran medical officer, to come to the area to report the disease to Australian authorities. [7] Initially, the Fore people believed the causes of kuru to be sorcery or witchcraft. [35] They also thought that the magic causing kuru was contagious.
Human brain in the coronal orientation. Amygdalae are shown in dark red. The amygdala (/ ə ˈ m ɪ ɡ d ə l ə /; pl.: amygdalae / ə ˈ m ɪ ɡ d ə l i,-l aɪ / or amygdalas; also corpus amygdaloideum; Latin from Greek, ἀμυγδαλή, amygdalē, 'almond', 'tonsil' [1]) is a paired nuclear complex present in the cerebral hemispheres of vertebrates.
One of the key findings from the first batch of research, based on more than 1,600 genomes in the database, was connected to multiple sclerosis, often called MS, a lifelong autoimmune disease of ...
In the U.S. measles outbreak from 1989 to 1991, the CDC found seven to 11 people out of every 100,000 infected with measles were estimated to be at risk for developing SSPE, but some studies have ...
Clinical lycanthropy is a rare psychiatric syndrome that involves a delusion that the affected person can transform into, has transformed into, or is a non-human animal. [1] Its name is associated with the mythical condition of lycanthropy , a supernatural affliction in which humans are said to physically shapeshift into wolves. [ 2 ]