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The limbic system, also known as the paleomammalian cortex, is a set of brain structures located on both sides of the thalamus, immediately beneath the medial temporal lobe of the cerebrum primarily in the forebrain. [1] Its various components support a variety of functions including emotion, behavior, long-term memory, and olfaction. [2]
Goleman points out that "not all limbic hijackings are distressing. When a joke strikes someone as so uproarious that their laughter is almost explosive, that, too, is a limbic response. It is at work also in moments of intense joy." [11] He also cites the case of a man strolling by a canal when he saw a girl staring petrified at the water.
Limbic resonance is the idea that the capacity for sharing deep emotional states arises from the limbic system of the brain. [1] These states include the dopamine circuit-promoted feelings of empathic harmony, and the norepinephrine circuit-originated emotional states of fear, anxiety and anger.
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.
Limbic encephalitis is a form of encephalitis, a disease characterized by inflammation of the brain. [1] Limbic encephalitis is caused by autoimmunity : an abnormal state where the body produces antibodies against itself.
The term limbic system was introduced in 1952 by Paul MacLean [15] to describe the set of structures that line the deep edge of the cortex (Latin limbus meaning border): These include the hippocampus, cingulate cortex, olfactory cortex, and amygdala. Paul MacLean later suggested that the limbic structures comprise the neural basis of emotion.
The limbic system is involved in mediating emotion, behavior, motivation, and long-term memory. Extraversion (E) – degree to which people are outgoing and are interactive with people, which is mediated by the activation of the reticular formation. Neuroticism (N) – degree of emotional instability, which is associated with the limbic system.
The amygdala is known to have a role in the "fight-or-flight response", and the hippocampus functions to form memories of the stimulus and the emotions associated with it. [13] The role of the BNST in the acoustic startle reflex may be attributed to specific areas within the nucleus responsible for stress and anxiety responses. [ 12 ]