Before revision:  III) both artefact cleaning and GSR are essential steps in minimizing the within-group variability in control animals and identifying FC changes in a rat model of sporadic Alzheimer's disease, as compared to controls.
After revision:  III) both artefact cleaning and global signal regression are essential steps in minimizing the within-group variability in control animals and identifying FC changes in a rat model of sporadic Alzheimer's disease, as compared to controls.