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Amygdala

The amygdala is a globular structure often seen protruding from the ventromedial aspect of the pallium, just beneath the ventral extent of the putamen and lateral to the inferior horn of the fourth ventrical, which is medial to the hypothalamus.


The several cellular portions of the amygdalar formation are listed below and follow the nomenclature used by Alvin Berman.


  • Basalis; lateral & medial portions

  • Centralis, lies dorsally and long the rostrocaudal aspect

  • cortical nuleus

  • Intercalated subnuclei: several dark-stained cellular masses

  • Lateralis; large-celled portion

  • Medialis

  • Nuclei of lateral olfactory tract


The figure below is a series of coronal sections from the front to the back of the amygdala. Ventromedially at the back of the series, the amygdala presents its cortical subdivision at the ventromedial surface. At the caudal level in this series, the rostral portion of the ventral hippocampus begins. This is manatee #85-32.



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