Fig. 4: Frontal midline cluster (left, MNI coordinates x = −4, y = 19, and z = 43) and parietal midline cluster (right, MNI coordinates x = −4, y = −52, and z = 30).
From: Redesigning navigational aids using virtual global landmarks to improve spatial knowledge retrieval
a, e Scalp maps for frontal (a) and parietal (e) midline clusters. b, f Equivalent dipole locations of independent components (in or near the frontal (b)/parietal (f) cortex) at the sagittal, coronal, and top view, respectively. c, g ERSPs in VGL and non-VGL trials from frontal (c) and parietal (g) midline clusters (first dotted lines at the 0 ms time point signify the onset of a trial, and the second dotted lines at the 1000 ms time point signify the onset of stimuli). d, h Significant differences between midline clusters in the two trial conditions (ERSPs of VGL trials minus the ERSPs of non-VGL trials) with p < 0.001 for the frontal (c) and parietal (g) cortices. For all ERSPs, non-significant points were masked with zero values in the mean ERSPs and are displayed in green. Significant differences with respect to baseline activity are displayed in red and blue for positive and negative deviations from the baseline activity, respectively.
