The neurological basis of intuition

From Neurophilosophy:

According to a new study, our gut feelings can enhance the retrieval of explicitly encoded memories - those memories which we encode actively - and therefore lead to improved accuracy in simple decisions. The study, which is published online in Nature Neuroscience, also provides evidence that the retrieval of explicit and implicit memories involves distinct neural substrates and mechanisms.

http://scienceblogs.com/neurophilosophy/2009/02/the_neurological_basis_of_intuition.php