Sechenov School
Home › Physiology › Feeding Center

Feeding Center

For medical students2 min readUpdated 2026-10-10

The feeding center is a complex of neural structures at various levels of the central nervous system (from the spinal cord to the cerebral cortex) responsible for regulating feeding behavior. A key role is played by the hypothalamus, which houses the centers controlling appetite, hunger, and the feeling of satiety.

Concept OriginThe term "feeding center" was proposed by Ivan Pavlov.
Hunger CenterLocated in the lateral hypothalamus (LH).
Satiety CenterLocated in the ventromedial hypothalamus (VMH).
Center InteractionThe relationship between the LH and VMH is reciprocal (mutually antagonistic).

Role of the Lateral Hypothalamus (Hunger Center)

The lateral hypothalamus is responsible for perceiving the need for food and triggering the corresponding behavior. Its neurons receive signals from an empty stomach as well as humoral factors circulating in "hungry blood".

Experiments by B.K. Anand and J. Brobeck clearly demonstrated the function of this area:

Excitation of the lateral hypothalamus also triggers ascending activating influences on the limbic-reticular complex and the cerebral cortex, forming the feeling of hunger and food motivation.

Ventromedial Hypothalamus (Satiety Center)

The ventromedial nuclei of the hypothalamus are located near the lateral nuclei and act as their functional antagonists.

Studies have revealed the following effects:

Reciprocity of Feeding Centers

The operation of the feeding center is based on the principle of reciprocity (mutual inhibition):

  1. Excitation of the "hunger center" causes inhibition of the "satiety center".
  2. Excitation of the "satiety center" suppresses the activity of the "hunger center".

However, this reciprocity is not absolute. During excitation of the lateral hypothalamus, a certain fraction of neurons in the ventromedial hypothalamus are activated in an anticipatory manner. This is a unique state of "anticipation" that prepares the system to receive signals from ingested food.

Mnemonic

LH = Love Having (food) / Lateral = Hunger. VMH = Vastly More Full / Ventromedial = Satiety.

Frequently asked questions

Which specific CNS structures make up the feeding center at various levels?

The feeding center includes neural elements located at various levels of the CNS from the spinal cord to the cerebral cortex. Key regions are located in the hypothalamus: the lateral hypothalamus ("hunger center") and the ventromedial hypothalamus ("satiety center"). In addition, limbic-reticular structures, the cerebral cortex, and centers of the medulla oblongata (e.g., the vagus nerve nucleus, the salivary center) are involved in the functional feeding system.

What two phases is the process of physiological satiety divided into?

The process of physiological satiety is divided into two phases:

  • Sensory satiety (primary) — a rapid process implemented on a neural basis upon irritation of the receptors of the oral cavity, esophagus, and stomach.
  • Metabolic satiety (secondary, metabolic) — the final stage, occurring after food processing, its absorption into the blood, and the replenishment of metabolic needs and depots.
Through which neural pathways are afferent signals transmitted from an empty stomach to the hypothalamus?

Afferent signals constantly flow from an empty stomach to the vagus nerve nuclei located in the medulla oblongata during hunger. The cause of this afferentation is the tonic contraction of the stomach walls and irritation of its receptors. Afferent signaling from the empty stomach is also directed to the neurons of the lateral hypothalamus, although the specific subsequent pathway from the vagus nerve nuclei to the hypothalamus is not detailed.

Where are the main regions regulating hunger and satiety localized?

They are located in the hypothalamus: the lateral region is responsible for hunger, and the ventromedial region is responsible for satiety.

What happens when the lateral hypothalamus is destroyed?

A complete refusal to eat (aphagia) occurs, leading to emaciation and death of the organism.

How is food motivation formed?

Excitation of the lateral hypothalamus is transmitted via ascending pathways to the cerebral cortex and limbic-reticular structures, creating a conscious feeling of hunger and prompting the search for food.

Go deeper

More topics in Physiology

Cardiac Excitation ConductionHormone ReceptorsLoop of HenleGastric Digestion: Processes, Secretion, and EnzymesOxygen Transport in BloodPhysiology of the CerebellumRegulation of Fluid Balance and Blood VolumeConducting and Central Parts of Sensory SystemsCholesterol and Lipoprotein MetabolismThermoregulation CentersPhotoreceptorsDynamic StereotypePhysiology →