When participants were dealing with intense thoughts of food or cravings, researchers found a part of their brains, called the nucleus accumbens, produced stronger delta-theta signals. Brain activity was measured in all three participants using electrodes that had been inserted into their nucleus accumbens. For the next four months, not counting the first, the patient experienced a "profoundly" low number of 'severe food preoccupation' episodes. During this time, when she did have food cravings, the delta–theta activity in her nucleus accumbens was indistinguishable from times when 'food noise' wasn't experienced. It was during this time that the delta-theta waves in her nucleus accumbens picked up steam again.