Table 1

Pain-related activation sites within SI, SII, ACC, and IC. Coordinates are given in Talairach space (13); Lateral, anterior, and superior are relative to midline, anterior commisure, and commissural line, respectively (positive values are right, anterior, and superior). A t statistic of 2.55 is equivalent to P = 0.05 (15).

RegionStereotaxic coordinates (mm) t
Lateral AnteriorSuperior
Alert control
SI+42−18+40 3.01
SII +44−23 +20 4.18
ACC  +1  +5 +36 4.04
IC +42  −6 +12 3.61
Hypnosis control
SI +39 −21 +59 3.69
SII +40−18 +20 2.65
ACC  −8  −4 +34 3.86
 +7+18+322.52*
+16+18+363.34
IC +31 +10 +12 3.77
+35 +2 +14.16
Increased unpleasantness (↑UNP)
SI +31 −28+57 3.84
SII No peak witht > 2.50
ACC  +3 +20 +30 6.11
IC+34 +22 0 4.50
Decreased unpleasantness (↓UNP)
SI +34 −19+56 4.61
SIINo peak with t > 2.50
ACC  −1 +25 +29 4.42
+13+18+363.64
IC +38  +8  +34.66