It governs the Sahasrara Chakra which governs clarity of mind, connection to God and spirit and your belief systems. Imbalance causes depression, obsession thinking, confusions and you may suffer from migraine or brain/nervous disorder. Once balanced you get divine connection and manifest health. It is said to be good for the heart and eyesight too. Ek Mukhi Rudraksha gives more focus, individuality, name and fame.