 The global neuronal workspace theory provides an account of access consciousness but what of phenomenal consciousness? The theory predicts widespread activation of a cortical workspace network as correlated with phenomenal conscious experience, and proponents often appeal to imaging results that reveal widespread activation when consciousness is reported (Dehaene &amp; Changeux 2011). There is, however, a potential confound. We track phenomenal consciousness by access in introspective report, so widespread activity during reports of conscious experience correlates with both access and phenomenal consciousness. Correlation cannot tell us whether the observed activity is the basis of phenomenal consciousness or of access consciousness in report (Block 2007). This remains a live question for as discussed in  section 2.2,  we do not have empirical evidence that overflow is false.