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. 2013 Jun 24;8(6):e66190. doi: 10.1371/journal.pone.0066190

Figure 4. Distribution of ERP measurements in different attention conditions (data are collected at the electrode of FCz).

Figure 4

A, the distribution of P2 amplitudes. The three horizontal lines in every box reflect the lower quartile (25%), median (50%), and upper quartile (75%) of the P2 amplitudes (refer to the legend of Figure 2 for more details). B, the distribution of CNV amplitudes. C, the average and 95% confidential interval (CI) of the ERPs in response to the 1.5-s tone. For the sake of brevity, only the ERPs in the T and the P conditions are displayed. D, the average and 95% CI of the ERPs in response to the 2.5-s tone.