Fig. 2 | Nature Communications

Fig. 2

From: Discrete and continuous mechanisms of temporal selection in rapid visual streams

Fig. 2

Time-resolved decoding of stimulus categories. a Right: Example of event-related magnetic fields elicited by the presentation of images during the localizer task. Left: Subtraction between brain sources of each category (face, place, body parts and objects) and the mean of the other categories presented in Z scores according to baseline and projected on a flattened standard brain. Left to right columns represent bottom and left views of the brain at specific time points (50–450 ms from bottom to top). b Performance of classifiers trained to separate the four stimulus categories. Top graph: One classifier was trained at each time sample and tested on the same time sample. The shaded gray area represents the standard error to the mean across subjects. Right graphs: Classifiers were trained at specific time samples (from 120 to 370 ms) and tested on all other time samples. Results from signed rank tests comparing classification performance to chance are represented by the thick line below the x axis with darker colors representing lower P-values. False discovery rate (FDR) correction for multiple comparisons was applied across specific training times (120 to 370 ms), all testing times and conditions (RSVP and localizer). Matrix plot: Classifiers were systematically trained on each time sample and tested on all others. The color code represents the classification performance and the dotted line the diagonal of the matrix. c Classifiers trained on the localizer task were directly applied to the RSVP task. Line plots, matrix plot and statistics are as in b. d Contour plot representing classification performance significantly above chance obtained for each stimulus and averaged across subjects. Colors represent the successive stimuli in the RSVP (except T1) depicted below by a small rectangle. Dotted lines represent the diagonals of each matrix plot. FDR correction for multiple comparisons was applied across all training times, testing times and stimulus positions

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