Brain areas revealed by the factorial model.

<p>(STS = superior temporal sulcus, IFG = inferior frontal gyrus, M1 = primary motor area, SMA = supplementary motor area).</p>*<p>Since the “Chew > NoChew” contrast revealed very strong activations covering large parts of the brain, and since this contrast is probably most susceptible to motion artifact, we used a more stringent threshold, i.e., <i>p</i><0.05 (FWE) at peak voxel containing more than 30 contiguous voxels.