From 7½ Lessons
Jump to navigation Jump to search

A note for Lesson no. 2, "Your Brain Is a Network," in Seven and a Half Lessons About the Brain by Lisa Feldman Barrett.
Some context from page 39 is:

This phenomenon is called degeneracy.

Degeneracy in the brain means many different sets of neurons can produce the same behavior or function. It is a prerequisite for complexity.[1][2] And it allows species to evolve.


  1. Edelman, Gerald M., and Joseph A. Gally. 2001. “Degeneracy and Complexity in Biological Systems.” Proceedings of the National Academy of Sciences 98 (24): 13763–13768.
  2. Tononi, Giulio, Olaf Sporns, and Gerald M. Edelman. 1999. “Measures of Degeneracy and Redundancy in Biological Networks.” Proceedings of the National Academy of Sciences 96 (6): 3257–3262.