Synthesized answer
The provided passages from "Über das Organ der Seele" by Samuel Thomas von Soemmerring do not contain the answer to how to explain the key concepts in my own words. The passages only include the title, author, category (Brain), and page number [110]. Therefore, I cannot explain the key concepts as the necessary content is missing.
Synthesized from the book passages below. Chat with the book on Feynman for follow-up.
From the book
Title: Über das Organ der Seele by Samuel Thomas von Soemmerring Categories: Brain Pages: 110