Segmentation and subdivision of the hypothalamus into four ROIs. For analysis of the hypothalamic BOLD response the hypothalamus was manually segmented using several anatomical landmarks. For further analysis the hypothalamus was divided in four spate subdivisions. LPH/UPH, lower/upper posterior hypothalamus; LAH/UAH, lower/upper anterior hypothalamus; mb, mammillary body; oc, optic chiasm; ac, anterior commissure.