Table 1.
Behavioral data for the lexical decision task: mean response times (in ms, st. dev. in parentheses), mean number of errors, and omissions (st. dev. in parentheses).
Figure 1.
Activated clusters for the contrast words-nonwords on the pooled data (CTRL+MEDT).
The t-map is thresholded at p<0.001, k>27 voxels (α<0.05).
Figure 2.
ROI-based averages of the Gamma model beta coefficients for words (“wo”) and nonwords (“nw”) in controls (CTRL) and meditators (MEDT).
Abbreviations for ROI names are the same as in Table 2, where the index 1 and 2 for clusters with the same anatomical label follows the order in the table.
Table 2.
Clusters of activation for the contrast words-nonwords on the pooled data (CTRL+MEDT), thresholded at p<0.001 and k>27 voxels (α<0.05).
Figure 3.
Estimates of the BOLD response associated with semantic processing in the ROI set, obtained by fitting a spline basis set model for the hemodynamic function and subtracting the average response to nonwords (“nw”) from the average response to words (“wo”) in meditators and controls.
The Gamma function model for a standard hemodynamic response is plotted as a black dotted line for reference.
Figure 4.
Difference between controls and meditators (CTRL-MEDT) in the estimated profile of the BOLD response related to conceptual activity.
Error bars represent standard errors and a reference Gamma function model for the BOLD response to a single brief stimulus is plotted as a black line for reference.
Table 3.
Tests of group differences in the cumulative measure of the BOLD signal related to semantic processing in the 6–14 s post-stimulus period within each ROI.