You do know if this is true. You can not interpret the things without the involvement of cerebral cortex.
Cerebral Cortex
No, a human cannot survive with only the brain stem. While the brain stem controls basic life functions like breathing and heart rate, essential functions such as consciousness, cognition, and emotion are controlled by other parts of the brain.
The spinal cord is attached to the brain stem located at the base of the brain. This stem is connected to the cerebellum.
Brain stem
Death is defined as the cessation of all vital functions of the body including the heartbeat, brain activity (including the brain stem), and breathing.
Yes, it is basically the base of the brain; it is where the brain starts. The brain stem extends from the spinal cord into the brain and is the oldest (most primitive) part of the brain. Over time, the brain has developed on top of the brain stem to come to what it is today (in modern humans).
your brain stem or sensory neurons
Edinger-Westphal nucleus of the brainstem controls the pupil reflex. An ER doctor who looks at the response to a pen light is checking on brain stem activity.
The brain stem is the part that controls breathing, it is the stem that allows the respiratory system to work and help you breathe
The Brain stem connects these two portions of the brain.
If a zombie looses its head in an insta shot it could live about 2 or 3 seconds after it looses it head. If it took another shot then it will die immeditaly
The brain stem controls muscle movements. Even involuntary movements are controlled by the tiny brain stem. Without the use of your brain stem, you will not "remember" how to do the simplest task.