Related Experiment Video
Updated: Jun 25, 2026

Continuous Venous-Arterial Doppler Ultrasound During a Preload Challenge
Published on: January 20, 2023
Carotid baroreflex testing using the neck collar device
Victoria L Cooper1, Roger Hainsworth
1Room C332, Clinical Sciences Building, Salford Royal Hospital, Stott Lane, Salford, M6 8HD, UK.
Abstract:
A neck chamber device for stimulation of carotid sinus baroreceptors by changing carotid transmural pressure was first described in 1957 by Ernsting and Parry and, with several modifications, has been extensively used in a number of physiological and clinical studies. This article outlines the evolution of neck chamber devices and describes some of the advantages and limitations of the technique. We also describe the responses in healthy subjects and the changes observed in patients with some disorders affecting the autonomic nervous system.
More Related Videos
Related Concept Videos
Assessment of blood pressure in brachial artery(one-step method)
Prepare for the Procedure:
Assessment of blood pressure in brachial artery(two-step method)
Neural Regulation of Blood Pressure
Baroreceptor Reflex
Baroreceptors, located in the carotid sinuses and aortic arch, detect changes in blood pressure. When blood pressure rises, these stretch-sensitive receptors...

