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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.
“Limbic” is related to the brain areas first involved, “age-related” and the name “LATE” itself refer to the onset of disease usually in persons aged 80 or older. “ TDP-43 ” indicates the aberrant mis-folded protein (or proteinopathy ) deposits in the brain that characterize LATE, and “ encephalopathy ” means illness of brain.
Damage to the limbic system involves loss or damage to memory, and may include: [citation needed] loss or confusion of long-term memory prior to focal neuropathy (retrograde amnesia) inability to form new memories (anterograde amnesia) loss of, or reduced emotions ; loss of olfactory functions; loss of decision-making ability
This circuit connects the frontal monitoring systems to the limbic system. Dysfunction of this circuit often results in personality change including behavioral disinhibition, emotional lability, aggressive outbursts, poor judgment, and lack of interpersonal sensitivity. [2] [11]
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. [2]
Dysfunction in the amygdala and striatum has been associated with attentional biases, and may represent a bottom up mechanism of dysfunctional emotional processing. [40] Blond et al. proposed a model centered on dysfunction in an "amygdala-anterior paralimbic" system.
Limbic encephalitis is associated with an autoimmune reaction. [1] In non-paraneoplastic limbic encephalitis, this is typically due to infection (commonly herpes simplex virus) or as a systemic autoimmune disorder. [13] Limbic encephalitis associated with cancer or tumors is called paraneoplastic limbic encephalitis. [citation needed]
Limbic system with smaller neurons that are more densely packed together. Given that the limbic system is the main center of emotions and memory in the human brain, this observation may explain social impairment in ASD. [18] Fewer and smaller Purkinje neurons in the cerebellum. New research suggest a role of the cerebellum in emotional ...