The main objective of analyzing functional magnetic resonance imaging (fMRI) data sets is to screen the physiologically induced signals from noise or artifacts resulting either from involuntary patient motion or MRI detection techniques. One problem, that is not yet solved, is related to the...

The notion of quantum discord introduced by Ollivier and Zurek [Phys. Rev. Lett 88 (2001) 017901] (see also Henderson and Vedral [J. Phys. A 34 (2001) 6899] ) has attracted increasing attention, in recent years, as an entropic quantifier of non-classical features pertaining to the correlations...