Table 1.
Response categories.
Figure 1.
Targeting the dorsolateral PFC, depicted at the cross, for rTMS with a volume view from a subject’s anatomical brain images.
The centre of the rTMS coil is vertically attached to the skull, in order to get the shortest distance to the target. The coordinates of the target are (37, 39, 40) in Talairach space.
Figure 2.
The number of confident and guessed responses in the rTMS experiment, grouped by stimulation site.
The total number of trials for each subject was 32. The number of guessed trials significantly increased only while rTMS was over BA9 and not for the sham TMS or Cz stimulation, compared with the no-TMS condition (the non-linear mixed effect model was adopted, t4 = 11.31, p = 0.0003). Cz is the top of the head, according to the 10–20 EEG system.
Figure 3.
The distribution of accuracy in the rTMS experiment, grouped both by the factor of confident or guessed responses and by stimulation site.
The error bar of each column indicates the standard error of the data. The accuracies of the guessed trials among the four stimulation sites were similar, all at the chance level (the non-linear mixed effect model was adopted, rTMS on BA9 versus no-TMS, t4 = 1.64, p = 0.1768; sham TMS on BA9 versus no-TMS, t4 = 0.57, p = 0.5980; rTMS on Cz versus no-TMS, t4 = 0.67, p = 0.5378).