Well why not! The solar plexus is considered to be a centre of incredible power. To William Walker Atkinson (one of the pioneers of true new age thinking) it was another Brain of the body, able to do many incredible things. I'm sorry that I can't find a free copy of his work "The Solar Plexus, The Abdominal Brain", which is worth a look (as is all of William Walker Atkinson's works); but here is another book outlining the power of the solar plexus:

http://www.psitek.net/pages/PsiTekJHTWTSPContents.html#gsc.tab=0

(from the site www.psitek.net which gives access to many informative and useful books).