Fig. 6.
Normalized alpha-EEG potentials under each experimental condition and
their correlation with adjusted rCBF equivalent values as measured by
positron emission tomography (PET) scanning. A: grand
average normalized alpha-EEG potentials with standard error for 11 subjects. The data of one subject were excluded because of excessive
electrical noise in the EEG. ANOVA followed by Fisher's PLSD post hoc
test showed a significant main effect of condition
(P < 0.05) and a significant increase during the
presentation of FRS compared with HCS (P < 0.05).
B: the brain areas in which the rCBF equivalent values
were significantly correlated with the alpha-EEG potentials are shown
in a standard format (the same as in Fig. 4A). Maps are
illustrated in a color scale, with the higher Z score
represented in brighter green. C: the same area as shown
in B (green) and the activated area in the comparisons
of FRS and HCS as shown in Fig. 4 (yellow) are superimposed. The same
area in the left thalamus that was activated by FRS was most
significantly correlated with the alpha-EEG potentials. The maximum
correlation in the brain was observed at [x, y,
z] = [
16, 16, 0] (Z score = 4.30)
in the stereotaxic space, which is the pixel immediately adjacent to
the maximally significant local point observed in the rCBF experiment
(FRS vs. HCS).