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Table 1. 

Brain Regions Showing Significant Change in Activity between the Three Motor Tasks

RegionsHBAMNI CoordinatesFContrast Estimates
Overt ModeCovert Mode
xyzSO-1SO-2AO-1AO-2SY-1SY-2SO-1SO-2AO-1AO-2SY-1SY-2
Cluster 1 (797 Voxels) 
Primary sensorimotor cortex −56 −24 44 40.54 0.19 0.19 0.15 0.15 0.06 0.01 0.05 0.04 0.03 0.03 0.00 0.00 
Inferior parietal cortex 40 −58 −22 38 39.14 0.20 0.19 0.17 0.17 0.09 0.04 0.07 0.04 0.06 0.05 0.01 0.00 
 
Cluster 2 (529 Voxels) 
Primary sensorimotor cortex 58 −16 34 32.18 0.19 0.23 0.16 0.17 0.08 0.05 0.02 0.02 0.01 0.01 −0.04 −0.02 
Inferior parietal cortex 40 62 −16 22 20.74 0.17 0.20 0.20 0.22 0.13 0.09 0.04 0.04 0.02 0.02 −0.04 −0.01 
 
Cluster 3 (167 Voxels) 
Middle temporal gyrus 21 −60 −16 −6 26.14 −0.02 −0.03 0.00 −0.01 0.09 0.05 −0.03 −0.02 −0.03 −0.03 −0.03 −0.01 
Superior temporal gyrus 22 −62 −22 23.32 0.00 0.00 0.03 0.02 0.11 0.08 −0.01 0.00 −0.02 −0.01 −0.01 −0.01 
 
Cluster 4 (42 Voxels) 
Premotor cortex 36 −10 56 22.01 0.09 0.09 0.06 0.06 0.03 0.00 0.01 0.03 0.00 0.02 0.00 0.01 
 
Cluster 5 (41 Voxels) 
Premotor cortex −56 34 20.21 0.25 0.26 0.23 0.24 0.18 0.15 0.09 0.08 0.09 0.07 0.04 0.05 
RegionsHBAMNI CoordinatesFContrast Estimates
Overt ModeCovert Mode
xyzSO-1SO-2AO-1AO-2SY-1SY-2SO-1SO-2AO-1AO-2SY-1SY-2
Cluster 1 (797 Voxels) 
Primary sensorimotor cortex −56 −24 44 40.54 0.19 0.19 0.15 0.15 0.06 0.01 0.05 0.04 0.03 0.03 0.00 0.00 
Inferior parietal cortex 40 −58 −22 38 39.14 0.20 0.19 0.17 0.17 0.09 0.04 0.07 0.04 0.06 0.05 0.01 0.00 
 
Cluster 2 (529 Voxels) 
Primary sensorimotor cortex 58 −16 34 32.18 0.19 0.23 0.16 0.17 0.08 0.05 0.02 0.02 0.01 0.01 −0.04 −0.02 
Inferior parietal cortex 40 62 −16 22 20.74 0.17 0.20 0.20 0.22 0.13 0.09 0.04 0.04 0.02 0.02 −0.04 −0.01 
 
Cluster 3 (167 Voxels) 
Middle temporal gyrus 21 −60 −16 −6 26.14 −0.02 −0.03 0.00 −0.01 0.09 0.05 −0.03 −0.02 −0.03 −0.03 −0.03 −0.01 
Superior temporal gyrus 22 −62 −22 23.32 0.00 0.00 0.03 0.02 0.11 0.08 −0.01 0.00 −0.02 −0.01 −0.01 −0.01 
 
Cluster 4 (42 Voxels) 
Premotor cortex 36 −10 56 22.01 0.09 0.09 0.06 0.06 0.03 0.00 0.01 0.03 0.00 0.02 0.00 0.01 
 
Cluster 5 (41 Voxels) 
Premotor cortex −56 34 20.21 0.25 0.26 0.23 0.24 0.18 0.15 0.09 0.08 0.09 0.07 0.04 0.05 

Maximum activation peak summary of brain regions showing significant change in activity between the three motor tasks and contrast estimates in all conditions (bidirectional F contrast; p < .0001 uncorrected at the voxel level, cluster extent threshold of 30 voxels). SO = silent orofacial movement; AO = audible orofacial movement; SY = syllable production.

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