Figure 11. Model confusion matrices for testing element, position, and element-position conjunctions (a) and the results of testing each of these matrices across frequency bands and trial phases (b).

(a) Model matrices that describe the similarity structure by the variation in elements, positions, and conjunctions of elements and positions (see the text for details). Black cells in the model matrices represent a theoretically expected correct classification probability of p = 1.0, gray cells of p = 0.33, and white cells of p = 0. (b) T-values associated with regression coefficients for each of the three model predictors are presented separately for the preparation and the probe period and for the theta- and alpha-band.