amygdala
Acronym: AMG
The term amygdala refers to a topologically (in primates) histologically and functionally defined structure located on the medial aspect of the anterior parahippocampal gyrus of the human and macaque ( Amaral-1992 ) and in the rat ( Swanson-2004 ) and mouse ( Hof-2000 ) where it is located ventromedially in the cerebral hemisphere about midway between the frontal pole and occipital pole. It has two parts: periamygdalar cortex (PAC) and amygdalar nuclei (AMN).
      The PAC is more cortex-like in thatt the neurons are organized in layers; it connects the olfactory system (OLS) via stria terminalis (st) to the nuclei of stria terminalis (NST) and hypothalamus (HYP) ( Olmos-1990 ). In the AMN neurons are more homogeneously distributed. They receive input from the olfactory system through PAC and directly from all of the other sensory systems ( Wright-1997 ).
      Two major functions of the amygdala are to mediate fast stereotypic instinctive responses to natural stimuli and to mediate the performance of learned responses to stimuli signalling opportunity to seek reward or to avoid harm ( Bowden-2021 ). Updated 20 Jun 2024.
     
     

Also known as: amygdaloid body, amygdaloid complex, amygdaloid nuclear complex, amygdaloid nucleus, archistriatum, Corpus amygdalae, Corpus amygdaloideum, nucleus amygdalaeNeuroNames ID : 237


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