Figure 5

Attention modulated early brain activity (30-90 ms). (a) Topography of the average F-values in this time range. Non-significant F-values are in grey. (b) Topography of the absolute differences between the two tasks where the p-values of the post-hoc test were significant (p < 0.05). Non-significant data are represented in grey. (c) Average topographic maps for each task between 30 and 90 ms. Left to right: FACE, VOICE, BOTH and the average between FACE and VOICE, shown as a comparison. Over posterior regions, the map for the BOTH task is similar to the map for the FACE task, while in fronto-central regions it is more similar to the map for VOICE. Comparison of BOTH with the average of VOICE and FACE shows that the topography in the BOTH task differed from the average topography of the other tasks over fronto-central electrodes.