medulla oblongata vs percipience

medulla oblongata

noun
  • The lower portion of the brainstem. 

percipience

noun
  • The state or condition of being highly perceptive, as if in an almost hypnotic or telepathic state. 

  • perception 

How often have the words medulla oblongata and percipience occurred in a corpus of books? (source: Google Ngram Viewer )