"We found that blood flow around this region increased when you had a difficult decision to make and you successfully rejected the default option," Fleming says.
Here's the cool part: It's the same region that some doctors are hitting with "deep brain stimulation," a treatment that's enabling some Parkinson's patients overcome the rigidity and walking problems that are a part of that illness.This might not be a coincidence, Fleming suggests.
http://www.npr.org/blogs/health/2010/03/the_biology_of_dithering.html?sc=fb&cc=fp
