What Led to the Myth That Humans Use Only 10

Multiple Choice

What led to the myth that humans use only 10 percent of our brains?

A) Scientists electrically probed the association areas and received no response.
B) Scientists noticed that when they severed the corpus callosum of most patients,it had no effect on their behavior.
C) Phineas Gage's horrible accident had no detectable effect on his brain.
D) This is not a myth;humans use only 10 percent of the brain.