paleoencephalon

• 指大脑系统发育上较古老的部分，包括除大脑皮层以外的大部分结构。

A noun referring to the phylogenetically older parts of the brain, encompassing most structures other than the cerebral cortex.

1. Primitive brain structuresC2formalmedical

   The more ancient parts of the brain in terms of evolutionary development, including most structures other than the cerebral cortex.

   古脑

   • The paleoencephalon is responsible for basic survival functions like breathing and heart rate.
   • Damage to the paleoencephalon can affect instinctual behaviors.
   • In evolutionary terms, the paleoencephalon developed before the neocortex.