28 research outputs found
Statistical correlation maps of the EEG frequencies with the DMN signal.
<p>Significant voxels thresholded at p<0.00833 for (a) delta-band extracted from the ACC (b) beta-1 frequency extracted from the PCC, (c) beta-2 frequency extracted from the PCC and (d) beta-2 frequency extracted from the precuneus.</p
Methodological approach: LORETA analysis was performed after correction and demodulation for a specific frequency.
<p>The extracted average power was included into the dual regression analysis in order to identify brain structures whose BOLD signal variation correlates with the power of EEG-frequencies. The image below shows voxels in which alpha power extracted from the ACC was positively correlated (p<0.00833) with the activity of the DMN.</p
Alpha-band source localisation from the averaged signal across the 15 subjects using LORETA.
<p>Alpha-band source localisation from the averaged signal across the 15 subjects using LORETA.</p
DMN identified from the group analysis of the 15 subjects.
<p>DMN identified from the group analysis of the 15 subjects.</p
MNI coordinates of clusters with minimal correlation p values with the DMN signal. Structures defined according to the Harvard-Oxford Cortical Structural Atlas.
<p>MNI coordinates of clusters with minimal correlation p values with the DMN signal. Structures defined according to the Harvard-Oxford Cortical Structural Atlas.</p
Repeated measures ANOVA analysis (n = 16) of 1 factor at 4 levels.
<p>Color bar represents Z-scores.</p
Voxel-wise statistical comparison of EEG-informed High (90 and 100 dB) vs. Low (70 and 80 dB).
<p>Voxel-wise statistical comparison of EEG-informed High (90 and 100 dB) vs. Low (70 and 80 dB).</p
Clusters exhibiting activation with the 70, 80, 90 and 100 dB tones in the fMRI data analysis. Structures defined according to the Harvard-Oxford Cortical and Subcortical Structural Atlases.
<p>Clusters exhibiting activation with the 70, 80, 90 and 100 dB tones in the fMRI data analysis. Structures defined according to the Harvard-Oxford Cortical and Subcortical Structural Atlases.</p
Results of comparing high vs. low SPLs in the source localization anaylsis using sLORETA.
<p>Significant differences (two-tailed, p <0.05) at 140 – 280 ms post-stimulus.</p