@Kenjhee
If you are interested in the metabolic cascade following a concussion I recommend reading this article that takes an in depth look:
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC155411/
Also if you have a general interest in studying the brain, I recommend reading the book "The Other Brain". It focuses on the often overlooked glia cells and how they relate to the general functioning.
I found the book very exciting and it is not a hard read.
http://theotherbrainbook.com/home.php
-GlassHead