Sit cross legged. Place left hand on left knee, in gyan mudra. With right hand, place thumb on the mound of Mercury (on palm just below the pinkie finger), palm facing your face. “Sniff” each finger in succession as you silently recite the mantra “Sa Ta Na Ma”, starting with the Jupiter (index) finger. After the fourth “sniff”, exhale the breath and begin again.
This meditation will stimulate and intensify your perceptive field.