The default mode network: What is the default function of the human brain?
Neuroscientists using so-called functional magnetic resonance imaging (fMRI) or positron emission tomography (PET) are frequently confronted with one uneasy question: What did neuroimaging teach us what we did not already know before the invention and use of this technology? Although there might be no simple answer to this question, one may mention intriguing brain network that emerged about 15 …