Figure 4: (A) Both, the significant right hemispheric and trend
level left hemispheric, source clusters are shown. The color bar
indicates F-values. (B) The mean relative ssVEF power changes
across source clusters in (A) are shown for the pre-cue baseline,
post-cue unattended, and post-cue attended experimental phases separated
by the pre-cue ring and fixationcross conditions. The error bars depict
s. e. ms. * p < 0.05
As the observed effects were spread across different cortical regions
within the visual cortex, mean ssVEF relative power changes for each
region of interest (ROIs) were entered in a repeated measure ANOVA with
within-subject factors pre-cue condition (rings vs. cross), experimental
phase (pre-cue baseline, not attend and attend cued visual hemifield),
and ROIs (V1, V2, precuneus, occipito-parietal cortex, hMT+, and
inferior-temporal cortex). Relative power values for homologous left and
right cortical areas that both covered significant clusters from the
previous analysis were collapsed across hemispheres, whereas for the
remaining ROIs only right hemisphere ssVEF responses entered the
analysis.
A significant pre-cue condition by experimental phase by ROIs
interaction, indicated that the previously reported pre-cue condition by
experimental phase interaction is different depending on the ROI (F(10,
190) = 4.03, p = 0.008, ε = 0.11, η2 = 0.17).
Therefore, the pre-cue condition by experimental phase interaction was
assessed separately for ROI (see Figure 5A). At each ROI a significant
pre-cue condition by experimental phase interaction was observed (Table
1).