Impact of Global Normalization in fMRI Acupuncture Studies

Figure 3

Histogram and activation/deactivation of the group results for NO PSGS and PSGS. The left part of (a) and (b) indicates the histogram of the group results based on the random effects model (REM) in acupuncture and tactile runs respectively. The dark grey line shows the histogram for NO PSGS and the light grey line shows the one for PSGS. Three thresholds were marked on the histogram, 𝑃<0.00001, uncorrected, 𝑃<0.001, uncorrected, and 𝑃<0.01, uncorrected. The number of activations and deactivations of the group results at the three thresholds for NO PSGS and PSGS is shown in the right part of (a) and (b).

(a)

(b)