GLOSSARY

Paraventricular Nucleus (PVN)
The paraventricular nucleus is a hypothalamic region containing distinct neuronal populations involved in endocrine and autonomic regulation. It should not be treated as one uniform group producing a single hormone.

Different cellular roles

Magnocellular populations contribute vasopressin and oxytocin. Parvocellular populations include CRH-producing neurons and neurons projecting toward autonomic regulatory centers. Other endocrine-related populations also contribute.

Integrated information

• Stress-related, metabolic and neural inputs influence these circuits.
• Hormonal feedback can alter their activity, connecting central regulation with peripheral physiological state.

An applied distinction

A signal attributed to the PVN may involve stress-axis regulation, water balance or autonomic output depending on the cells studied. Experimental interpretation therefore needs the neuronal population, projection route and measured response.