sentence: Previous studies implementing either functional imaging approaches or behavioral neuro-modulatory techniques have shown that neural activity associated with perceptual switching during BR is tightly linked to a fronto-parietal network , predominantly in the right hemisphere ( Lumer et al. 1998 ; Corbetta and Shulman 2002 ; Carmel et al. 2010 ; Zaretskaya et al. 2010 ; Knapen et al. 2011 ) .