Figure 5.

Control experiments. A, Activity profiles of left aSMG in the first control experiment: actions presented in left visual field instead of right visual field (6 subjects); both paired t tests for the interaction and direct comparison of actions (see Materials and Methods) reached p < 0.05. B, Activity profiles of left aSMG in the second control experiment: actions and static controls in right visual field with gliding (translation of static frame) controls and tool action with no object added (7 subjects). In both cases the profiles are those of the 5 voxels of the aSMG ROI (used as an a priori prediction) in which the interaction with the screwdriver reached p < 0.01 in those particular subjects. In B, the interaction of the tool action with the gliding (translation) and static conditions was significant (paired t test, p < 0.01), as was the direct comparison of actions (p < 0.001).