Thank you. So this is the output that I get from the table. Does the "mean" represent the effect estimate (beta)? And then where can I find the t-stat and degrees of freedom?

#Cluster report for file /Applications/freesurfer/Paper1/Fixed3_ACS_PCC.nii
#[Connectivity radius = 1.01 mm Volume threshold = 162.00 ]
#[Single voxel volume = 27.0 (microliters) ]
#[Voxel datum type = float ]
#[Voxel dimensions = 3.000 mm X 3.000 mm X 3.000 mm ]
#[Coordinates Order = RAI ]
#[Fake voxel dimen = 1.000 mm X 1.000 mm X 1.000 mm ]
#Mean and SEM based on Absolute Value of voxel intensities:
#
#Volume CM RL CM AP CM IS minRL maxRL minAP maxAP minIS maxIS Mean SEM Max Int MI RL MI AP MI IS
#------ ----- ----- ----- ----- ----- ----- ----- ----- ----- ------- ------- ------- ----- ----- -----
474 1.2 56.3 26.3 -13.5 13.5 37.5 76.5 2.5 47.5 0.0064 2.2e-04 0.0253 7.5 55.5 23.5
365 1.0 -50.8 17.5 -10.5 13.5 -64.5 -34.5 -12.5 47.5 0.0072 2.7e-04 -0.0229 -7.5 -49.5 8.5
38 0.3 24.3 32.8 -4.5 4.5 10.5 34.5 26.5 35.5 0.0049 6.0e-04 -0.0132 1.5 25.5 32.5
22 56.5 9.4 -10.4 49.5 61.5 4.5 13.5 -18.5 -6.5 0.0043 6.8e-04 -0.0108 61.5 10.5 -9.5
17 -51.5 62.7 21.2 -55.5 -46.5 58.5 67.5 14.5 29.5 0.0052 8.5e-04 0.0145 -46.5 61.5 17.5
16 49.8 58.6 22.6 46.5 52.5 55.5 61.5 11.5 29.5 0.0087 0.0016 0.0188 49.5 58.5 26.5
13 18.0 -30.8 54.1 13.5 19.5 -34.5 -28.5 47.5 59.5 0.0041 9.4e-04 0.0101 19.5 -31.5 53.5
11 -20.2 -29.3 53.7 -25.5 -13.5 -34.5 -28.5 50.5 56.5 0.0059 0.0012 0.0121 -19.5 -28.5 56.5
10 41.4 62.1 20.0 40.5 43.5 58.5 67.5 14.5 23.5 0.0027 6.9e-04 -0.006 40.5 64.5 23.5
9 -61.9 12.8 -10.1 -64.5 -61.5 10.5 16.5 -15.5 -6.5 0.0079 0.0022 0.0192 -61.5 10.5 -9.5
7 44.9 -33.7 -6.1 43.5 46.5 -37.5 -31.5 -9.5 -3.5 0.0043 9.7e-04 -0.008 43.5 -34.5 -6.5
7 0.6 -34.5 13.6 -1.5 1.5 -37.5 -31.5 8.5 14.5 0.0049 0.0016 -0.0115 1.5 -34.5 14.5
7 47.6 67.2 26.0 46.5 49.5 64.5 67.5 20.5 29.5 0.0061 0.0016 0.0122 46.5 67.5 29.5
7 16.7 -24.9 56.6 13.5 19.5 -25.5 -22.5 53.5 59.5 0.004 0.0013 -0.0106 19.5 -25.5 56.5
6 -62.0 -0.5 -19.7 -64.5 -61.5 -4.5 1.5 -21.5 -15.5 0.0069 0.0021 -0.0151 -61.5 1.5 -18.5
6 13.0 -57.8 27.8 10.5 13.5 -58.5 -55.5 23.5 32.5 0.0078 0.0022 -0.0146 13.5 -58.5 26.5