Table 1. Brain areas revealed by the factorial model.
Regions | BA | Hemisphere | MNI Coordinates | Max T-value | Voxel size | ||
x | y | z | |||||
Noise > NoNoise | |||||||
STS | 48 | L | −50 | −12 | 2 | 16.31 | 4703 |
48 | R | 54 | −12 | −4 | 15.14 | 4803 | |
Insula | 47 | L | −34 | 22 | −2 | 4.36 | 463 |
IFG | 45 | L | −36 | 40 | 14 | 4.47 | 323 |
Chew > NoChew* | |||||||
M1 and thalamus | L | −52 | −8 | 28 | 15.43 | 4481 | |
L | −12 | −18 | 2 | 10.48 | |||
R | 50 | −10 | 34 | 15.69 | 5510 | ||
R | 14 | −18 | 2 | 10.64 | |||
SMA | L | −4 | −2 | 60 | 7.35 | 302 | |
Cerebellum | L | −14 | −64 | −24 | 16.24 | 1979 | |
R | 18 | 64 | 22 | 15.26 | |||
Chew × Noise | |||||||
STS | 48 | L | −38 | −30 | 10 | 4.75 | 296 |
48 | R | 48 | −28 | 8 | 4.61 | 335 |
(STS = superior temporal sulcus, IFG = inferior frontal gyrus, M1 = primary motor area, SMA = supplementary motor area).
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., p<0.05 (FWE) at peak voxel containing more than 30 contiguous voxels.