Satiety
The mechanism of hunger and satiety are not necessarily the same. There are two mechanisms for satiety. One is at the brain level, the other is at the gastrointestinal tract level. There are two places in the hypothalamus, part of the brain, that controls hunger and eating. The Ventromedial Nuclei gives a signal when to stop eating, and the Lateral hypothalamus gives a signal to start eating (e.g.,Coon 1995). We feel satiety at the brain level because of the function of the Ventromedial Nuclei. On the other hand, at the level of the gastrointestinal tract, Koopmans (1985) states that satiety signals come from the stomach, which controls short-term eating.