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(A) An eye-mask is illustrated for a representative subject with noticeable eye movement artifact. (B) Each axial slice of the eye-mask was collapsed into a (C) noise-vector. The noise-vector is equal to the median, non-zero voxel of each column of voxels of the eye-mask, as in Equation (8). The feature ASF1 was computed as the max of the sum of the noise-vector as in Equation (9). This procedure is illustrated for a representative axial slice, z = 150.
