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Table 3. 

Cortical Areas Showing the Effects of PPIs

Location
Hemisphere
Coordinates
t
PPI Effect for Motor Timing 
PMd (6) −42 −12 56 4.38 
SMG (40) −42 −35 57 4.22 
SMA (6) −6 −6 61 4.17 
 
PPI Effect for Sensory Timing 
SMA (6) −3 47 4.59 
PMd (6) −27 55 4.34 
DLPFC (9) 48 16 24 4.31 
SMG (40) 45 −56 50 4.25 
SMA (6) 61 4.20 
IFG (44) −53 3.99 
Location
Hemisphere
Coordinates
t
PPI Effect for Motor Timing 
PMd (6) −42 −12 56 4.38 
SMG (40) −42 −35 57 4.22 
SMA (6) −6 −6 61 4.17 
 
PPI Effect for Sensory Timing 
SMA (6) −3 47 4.59 
PMd (6) −27 55 4.34 
DLPFC (9) 48 16 24 4.31 
SMG (40) 45 −56 50 4.25 
SMA (6) 61 4.20 
IFG (44) −53 3.99 

Significant at a threshold of p < .001, uncorrected. PMd = dorsal premotor area; SMG = supramarginal gyrus; DLPFC = dorsolateral prefrontal cortex; IFG = inferior frontal gyrus; L = left; R = right.

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