Emerging Object Representations in the Visual System Predict Reaction Times for Categorization
Fig 6
Time varying representational distance for individual exemplars separated by object category.
Time varying (A) categorization task (red) and (B) cross-over (blue) rank-order correlations (Spearman’s ρ) for animate and inanimate exemplar stimuli. The color-coded asterisks in the top row of plots indicate time points at which there is a significant correlation between distances and RTs (* = FDR adjusted p < 0.05). The bottom row of plots displays the distances from animacy decision boundaries at each time point, computed for both the categorization task and distractor task data sets. Each time-varying line depicts the representational distance for an individual exemplar stimulus, at each 20 ms time point (either animate or inanimate). The color of each line is based on the rank-order of the median RT for each exemplar (rank is always within category). In all plots, decoding onset is indicated by dashed vertical line (60 ms). The period of peak decoding is indicated by a gray box extending 120–240 ms post-stimulus onset. The bar along the x-axis indicates the stimulus duration.