Fig. 4.

Regions with increased rCBF during 40 Hz auditory stimulation compared with stimulation at other frequencies. The activated areas, larger in the cerebellar hemisphere contralateral to the stimulated ear, are projected on a canonical image of the human brain obtained with T1-weighted MRI in the coronal, sagittal, and transverse planes. The chart depicts the effect size of the parameter estimates weighted for the amplitude of the EEG steady-state auditory response in the voxels of greatest activation (x, −30;y, −82; z, −42; and x, 28; y, −80; z, −48) at rest and during stimulation at each of the four frequencies. The left cerebellar hemisphere is on the left of the image.