What substance insulates brain circuits and greatly increases the speed of mental processing?
A) epinephrine
B) serotonin
C) dopamine
D) myelin

Question

Quizplus · Accepted Answer

Myelin insulates brain circuits, allowing for faster transmission of neural signals and greatly increasing the speed of mental processing. Epinephrine, serotonin, and dopamine are all neurotransmitters that play various roles in the brain but do not directly impact the insulation of brain circuits.

What Substance Insulates Brain Circuits and Greatly Increases the Speed