Hi Ci-long,

Sorry, I meant to give more complete details about the registration.

We performed a linear registration of the functional to structural images (with intermediate registration to a low-resolution t2-like image and b0 unwarping). For registration of structural to MNI152 template, the data included in the FLIRT directory was registered using a 12 degrees of freedom linear affine transformation. For the data included in the FNIRT directory, this linear registration was further refined wth nonlinear registration (FNIRT). The functional data were transformed to MNI152 space using a concatenation of the functional-to-structural and structural-to-MNI transforms.

Regarding the motion correction, we hadn't previously appreciated the effect of normalization on motion - we will rectify this situation soon, probably by uploading the motion parameters.

Finally, regarding the number of males and females, it appears that I made a mistake in the counts - there are indeed 3 females in the cocaine group. But, as I mentioned, the groups are group-matched on demographics, and, given that there are 4 females in the control group, this only means that the groups are better matched than we thought!

Cheers,
Clare