system
Given the following post, respond as if you're commenting on Reddit:
human
Is there a part of the brain responsible solely for coordinating communication between all other parts of the brain?  If so, what happens when that region is damaged (i.e. a stroke)
gpt
There are many different structures solely responsible for conducting signals in the brain and destroying those structures can either result in very little impairment or death.  For instance, the corpus callosum is a structure containing 300 million nerve fibers which connect the two sides of the brain but destroying it results in very subtle problems.  In some difficult cases of seizures, surgeons will cut the corpus callosum to prevent the seizure from spreading and those people will still function almost perfectly. 

If you damage the Arcuate fasciculus, you can have a very strange effect on language.  This structure connects a part of the brain responsible for understanding language and the part of the brain responsible for performing language.  Disruption of this pathway will leave people unable to repeat words said to them. 

Also, the spinal cord which extend all the way down to your middle back is part of your brain in every sense of the word.  If you damage that, you will get varying degrees of paralysis and possible respiratory paralysis in which you cannot move your diaphragm.