The average brain-stem setting for the input system differs in each brain. The amount of amplification influences everything. Some, with low amplification in their nervous system, are starved for stimulation all the time; others, with very high amplification, are surfeited. The remainder are somewhere in the middle. (Ornstein, Robert, PhD. The Roots of the Self. p 52-53. NY:HarperCollins Publishing, 1995.)

Connections between brain stem and limbic system help keep you conscious, alert, and in control. Communication between the limbic system and the cortex allows you to balance logic with emotions, and facts with feelings. (Brynie, Faith Hickman. 101 Questions Your Brain Has Asked About Itself But Couldn’t Answer, Until Now. p 12. CT: Millbrook Press, 1998.)

The brain stem, the most primitive part of our brain, is where fight-flight responses are harbored. (Gurian, Michael, PhD, and Patricia Henley, with Terry Trueman. Boys and Girls Learn Differently! p 17-20. CA: Jossey-Bass, 2001.)

The cerebellum (action brain) coordinates balance, movement, and posture. It keeps you upright and keeps your muscles working together. It’s the part that learns to play a piano or hit a tennis ball automatically. When you make a conscious decision to move quickly, the cerebellum monitors the speed, direction, force, and steadiness of the motion. The decision itself, however, comes from the thinking brain. (Brynie, Faith Hickman. 101 Questions Your Brain Has Asked About Itself But Couldn’t Answer, Until Now. p 17. CT:Millbrook Press, 1998.)

The brainstem is a type of combined power station and telephone exchange. It links the brain and the spinal cord, and also controls a range of facial movements (eye, ear, face, teeth, speech, facial expression). (Greenfield, Susan, Con. Ed. Brain Power, Working out the Human Mind. p 17, 39. The Ivy Press Limited, 1999.)

The brainstem connects the upper brain with the spinal cord. It houses much of the basic nervous system controls including the reticular activating system (RAS). Axons from nerve cells—that make dopamine, serotonin, norepinephrine, and histamine—reach out to other parts of the brain. All spinal cord nerves to and from the cortex pass through the brainstem along with those to and from the cerebellum. Coma occurs when the brainstem malfunctions; death when it is severed. (Guiffre, Kenneth, MD, with Theresa Foy DiGeronimo. The Care and Feeding of Your Brain. p 19, 22-23. NJ:Career Press, 1999.)