Take the 2-minute tour ×
Biology Stack Exchange is a question and answer site for biology researchers, academics, and students. It's 100% free, no registration required.

Is it known exactly why the brain needs sleep? What's dropping low / going high when we experience mental fatigue? I can see why low glucose could result in mental fatigue, are other reasons known?

share|improve this question
add comment

1 Answer

up vote 1 down vote accepted

This is not the biochemistry, but the brain regions involved are described in this article about an fMRI study: http://www.sciencedaily.com/releases/2012/12/121210101630.htm

EDIT:

From what I can tell, mental fatigue is attributed to low oxygenation levels. Here's a study that examines the effect of creatine in preventing mental fatigue: http://jtoomim.org/brain-training/watanabe2001-creatine-reduces-mentalfatigue.pdf

share|improve this answer
    
I know that these pieces of information don't directly answer your question, but they're related (and the best I could find). –  dd3 Feb 10 '13 at 5:46
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.