A new paper that some may find interesting:
 
Forrest MD (2014) The sodium-potassium pump is an information processing element in brain computation. Frontiers in Physiology. 5:472. doi: 10.3389/fphys.2014.00472
 
FREELY available at:
http://journal.frontiersin.org/Journal/10.3389/fphys.2014.00472/full