fMRI imaging of the ocular dominance column of the human primary visual cortex. Results of functional imaging are shown by colors on the grey anatomical images. The regions with greater signals during visual stimulation to the left eye than the right-eye stimulation are colored in yellow, and those with greater signals during right-eye stimulation in blue. The results of the first measurement are shown in the upper half, and those of the second measurement in the lower half. The two patterns well overlapped with each other, which proved the reliability of the imaged pattern.