first off: theyre spelled "amyglada" and "hippocampus," and if im remembering high school lessons correctly, the amyglada controls your ability to feel emotions, and the hippocampus controls long term/short term memory. gambling addiction is caused by a chemical imbalanced caused by the increased exposure to dopamine which is released from gambling. eventually this imbalance will cause the individual to feel less and less pleasure from the ]basic needs, sex, food, social interactions, sleep, etc, and the reliance on gambling will increase.

correct me if im wrong I learned this several years ago.