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. 2013 Jan 23;8(1):e52978. doi: 10.1371/journal.pone.0052978

Figure 7. Inter-trial variance for audiovisual stimuli at parietal electrode sites.

Figure 7

A. For the parietal electrode sites P3 and P4, percentage (%) of increase and decrease in inter-trial variance (ITV) in the 8–60 Hz frequency range for ATVI (auditory target and visual irrelevant), AIVT (auditory irrelevant and visual target) and ATVT (audiovisual dual target) stimuli at the parietal electrode sites P3 and P4. B. For each stimulus type at P3 and P4, non-significant (p>.01 determined using a bootstrap procedure) changes in ITV from the baseline are occluded using a white mask. C. Mean alpha (8–13 Hz) and beta (14–30 Hz) inter-trial variance (ITV) across time for electrodes P3 and P4. D. Mean amplitude and latency of peak minima (+SEMs) in the alpha and beta frequency range for P3 and P4 electrodes (*, ∧ and # p<.05 for main effect of stimulus type, hemisphere and the interaction between stimulus type and hemisphere, respectively for the two-way ANOVA).