Article Figures & Data
Figures
- Fig 1.
The bar chart presents the average value of the laterality indices obtained by using task-based fMRI for all the subjects in the Broca area, Brodmann area 6 (frontal area), and Wernicke area (temporal area).
- Fig 2.
A and B, Sagittal and axial images obtained after the 1-sample t test of the task-fMRI for the Broca area and Brodmann area 6. C and D, Wernicke area of 18 healthy controls.
- Fig 3.
The first row shows the sagittal and axial images obtained after a 1-sample t test of the Z-maps of 18 functional connectivity images obtained with the Broca area as the seed area. The second row shows sagittal and axial images obtained after a 1-sample t test of the Z-maps of the amplitude of low-frequency fluctuations in 18 healthy controls. We observed limited correlated activity for functional connectivity (A and B) and ALFF (C and D); it seems to be fragmented and potentially less clinically reliable at the individual level. The third row shows the sagittal and axial images obtained after a 1-sample t test of the Z-maps of fractional amplitude of low-frequency fluctuations in 18 healthy controls. By contrast, the map of fALFF (E and F) appears more robust and potentially more reliable.
- Fig 4.
The regression line plotted with signals extracted from the T-map of the z scores of the fractional amplitude of low-frequency fluctuations from the Broca area of resting-state fMRI with the laterality index obtained from all ROIs of task-based fMRI.
Tables
- Table 1:
The mean value of the laterality index obtained from Brodmann areas 44, 45, 47, 6, 21, and 22 using task-based fMRI for all subjects
Language Areas Mean LI of 18 Subjects Brodmann Area 44 0.375 Brodmann Area 45 0.238 Brodmann Area 47 0.430 Brodmann Area 6 0.377 Brodmann Area 21 0.166 Brodmann Area 22 0.218 - Table 2:
Correlation of the seed-based analysis metrics FC, ALFF, and fALFF of rsfMRI with the LI of task-based fMRI
Region Correlation between the Z Score of FC and LI Correlation between the Z Score of ALFF and LI Correlation between the Z Score of fALFF and LI Broca area 0.531 (P = .277) −0.153 (P = .771) 0.849 (P = .032) Wernicke area and Brodmann area 6 −0.752 (P = .085) 0.182 (P = .729) 0.372 (P = .467)
