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Table 4. 

A Comparison between Conditions for P1 and N1 Informed Analysis of Responses to Target Stimuli

Region (Harvard-Oxford, Maximum Probability)
MNI Coordinates of Local Maxima
Maximum Z Value
Overall Cluster Size (# Voxels)
x
y
z
Passive > Count P1 
Postcentral gyrus (L) −34 −26 70 3.5 459 
Precentral gyrus (L) −26 −18 54 3.1  
Superior frontal gyrus −8 −12 76 2.1  
 
Passive > Respond P1 
Postcentral gyrus (L) −34 −28 68 3.2 391 
Precentral gyrus (L) −28 −22 54 3.5  
 
Count > Respond P1 
Angular gyrus (L) −46 −58 54 3.4 526 
Supramarginal gyrus (L) −54 −50 54 3.3  
Lateral occipital cortex (L) −32 −70 54 3.2  
Superior frontal gyrus (L) −20 26 60 3.6 433 
Middle frontal gyrus (L) −28 18 56 3.3  
 
Respond > Count N1 
Lateral occipital cortex (R) 12 −66 54 3.3 480 
Precuneus (R) −62 54 3.1  
Occipital pole (R) −96 2.9 384 
Intracalcarine (R) −86 −4 2.8  
Region (Harvard-Oxford, Maximum Probability)
MNI Coordinates of Local Maxima
Maximum Z Value
Overall Cluster Size (# Voxels)
x
y
z
Passive > Count P1 
Postcentral gyrus (L) −34 −26 70 3.5 459 
Precentral gyrus (L) −26 −18 54 3.1  
Superior frontal gyrus −8 −12 76 2.1  
 
Passive > Respond P1 
Postcentral gyrus (L) −34 −28 68 3.2 391 
Precentral gyrus (L) −28 −22 54 3.5  
 
Count > Respond P1 
Angular gyrus (L) −46 −58 54 3.4 526 
Supramarginal gyrus (L) −54 −50 54 3.3  
Lateral occipital cortex (L) −32 −70 54 3.2  
Superior frontal gyrus (L) −20 26 60 3.6 433 
Middle frontal gyrus (L) −28 18 56 3.3  
 
Respond > Count N1 
Lateral occipital cortex (R) 12 −66 54 3.3 480 
Precuneus (R) −62 54 3.1  
Occipital pole (R) −96 2.9 384 
Intracalcarine (R) −86 −4 2.8  

Cluster-corrected, z = 2.0, p = .05, n = 13. L = left, R = right.

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