Down but not out in posterior cingulate cortex: Deactivation yet functional coupling with prefrontal cortex during demanding semantic cognition. - Katya Krieger-Redwood; Elizabeth Jefferies; Theodoros Karapanagiotidis; Robert A. Seymour; Adonany Nunes; Jit Wei Aaron Ang; Vierra Majernikova; Giovanna Mollo; Jonathan Smallwood (NeuroImage, 2016)