Fig. 2: Prediction 1: decoding of conscious content.
a, Spatial coverage of intracranial electrodes (npatients = 29) on a standard inflated cortical surface map (top), and within theory-defined ROIs (bottom): posterior (blue; nelectrodes = 583) and prefrontal (green; nelectrodes = 576). b, iEEG cross-task temporal generalization of decoding of high-gamma signal. Pattern classifiers were trained to discriminate stimulus category (faces–objects) in the task-irrelevant condition at each time point and tested in the task-relevant condition across all time-points. Columns denote stimulus durations (0.5 s (left), 1.0 s (centre) and 1.5 s (right)), and rows indicate theory ROIs (posterior (top) and prefrontal (bottom)). Contoured red-shaded regions depict significant above-chance (50%) decoding. Here and below, significance was evaluated through a non-parametric cluster-based permutation test (P < 0.05; two-sided). c, MEG average cross-task decoding of stimulus category (n = 65) from task-relevant to task-irrelevant stimuli (purple) and vice versa (orange), separately for the posterior (top) and prefrontal (bottom) ROIs, depicted on inflated cortical surfaces (posterior in blue and prefrontal in green), across durations, using pseudotrial aggregation. Underlying lines indicate significance. The shading depicts 95% CI across participants. d, fMRI searchlight cross-task decoding of stimulus category (n = 73), collapsed across durations, from task-relevant stimuli to task-irrelevant stimuli (left; purple) or vice versa (right; orange). The outlined coloured regions on the inflated cortical surfaces (left–right lateral views; right–left medial views (bottom)) indicate significant above-chance decoding. e, iEEG ROIs significant cross-task decoding of stimulus category, collapsed across durations. Conventions are as in panel d, displayed from a left lateral (top left), posterior (top right) and left medial (bottom) views. f, iEEG average decoding of stimulus orientation (left, right and front) within posterior (top) and prefrontal (bottom) ROIs, collapsed across durations. Underlying lines indicate above-chance (33%) decoding. The shading depicts 95% CI estimated across cross-validation folds. g, fMRI searchlight decoding of face orientation (left, right and front). Regions with significantly above-chance (33%) decoding accuracies are outlined in blue. h, iEEG ROIs decoding of face orientation (left, right and front). Conventions are as in panel g. i, MEG ROIs average decoding of face orientation (left, right and front). Conventions are as in panel f. Brain surfaces in panels a,c–e,g,h are from Freesurfer.
