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Central Regulation of Autonomic Functions$
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Ida J. Llewellyn-Smith and Anthony J. M. Verberne

Print publication date: 2011

Print ISBN-13: 9780195306637

Published to Oxford Scholarship Online: May 2011

DOI: 10.1093/acprof:oso/9780195306637.001.0001

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The Hypothalamus and Autonomic Regulation: An Overview

The Hypothalamus and Autonomic Regulation: An Overview

Chapter:
(p.47) 3 The Hypothalamus and Autonomic Regulation: An Overview
Source:
Central Regulation of Autonomic Functions
Author(s):

Roger A. L. Dampney

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780195306637.003.0003

The hypothalamus plays a key role in regulating autonomic function, usually as part of more generalized, often quite stereotyped, behavioural responses triggered by internal challenges (e.g., a change in body temperature or blood glucose levels) or external threats (e.g., the sight, sound or odour of a predator). Neurons within hypothalamic nuclei (especially the paraventricular nucleus, dorsomedial hypothalamus and perifornical area) make direct and indirect connections with sympathetic and parasympathetic preganglionic neurons and, in turn, receive inputs from a wide variety of sources, including (1) visceral and pain receptors, (2) receptors in circumventricular organs signalling changes in blood levels of circulating substances, and (3) inputs from the external environment, such as inputs signalling changes in temperature, light, and odour. Hypothalamic nuclei, especially the paraventricular nucleus and dorsomedial hypothalamus, are believed to generate the marked increases in sympathetic activity associated with disorders, such as neurogenic hypertension, severe heart failure and panic disorder.

Keywords:   stereotyped autonomic responses, paraventricular nucleus, dorsomedial hypothalamus, perifornical area, circumventricular organs, body temperature, defensive behaviour, neurogenic hypertension, heart failure

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