Fig. S7.

Examples of images rated for movement distortions. Images were rated for presence of movement. Ratings were performed in the Lifespan Changes in Brain and Cognition laboratory by three trained graduate-level operators with experience in MR processing. From left to right: coronal, sagittal, and axial views. Rows represent degrees of movement: 1: No sign of movement. 2: Adequate quality, minor movement; here we include two example images to show the possible quality included: 2A, example of best quality rated 2; 2B, example of worst quality rated 2. 3: Substantial movement artifacts, excluded. 4: Completely distorted image because of movement, excluded. Only scans deemed to be of adequate quality, and without substantial movement (i.e., rated 1 and 2) were included in analyses.