Welcome to the Cerebrovascular Research Network (CARNet), formerly known as the Cerebral Autoregulation Research Network. We are a community of researchers from many different countries around the world. Our members benefit from attending our annual conference and participating in joint projects that enable us to answer research questions together. We welcome you to join us if you are also working in this area - instructions can be found under the Join link at the top of the page.

Stephen Payne (CARNet Chair)



The brain, more than any other organ in the body, requires a constant supply of oxygen and nutrients, as well as the removal of waste products. In healthy humans, this blood flow should stay approximately constant when blood pressure varies, and adapt to changes in energy consumption and carbon dioxide and oxygen levels in the blood, pressure inside the skull and other factors. This regulation of blood flow is achieved primarily by arterioles (small arteries) dilating and contracting, under the influence of multiple complex physiological control systems. Impairment of these systems may occur e.g. following stroke, trauma or anaesthesia, in premature babies or the elderly, and has been implicated in the development of subsequent brain injury. The non-invasive measurement of relevant physiological signals (blood flow, intracranial and blood pressure, CO2 levels, cerebral oxygen consumption etc.) is challenging and the subsequent assessment of the control systems even more so. Much also remains unknown about the physiology of blood flow control and the best clinical interventions to optimize patient outcome.

Cerebrovascular Research


Understanding and measuring the cerebrovascular system is a big challenge, and despite great clinical interest and much research effort, benefit to patients has so far been limited. CARNet therefore aims to bring the multidisciplinary research community working in this area together in order to promote and accelerate high quality research by:

  • Sharing data
  • Sharing methods, including experimental arrangements and data analysis
  • Share results, experiences and ideas

CARNet aims to create an environment of trust, openness and confidentiality in which free discussion of scientific ideas, data and results can flourish.




Date: 12/07/2022

The abstract deadline for CARNet 2022 has been extended to August 1. Please feel free to share this message with all of your colleagues. You do not have to be a member of CARNet to submit an abstract and present your work at the meeting. We look forward to seeing you all in Leicester in October! More Details can be found at our meeting pages.

Special Issue - Physiological Measurement

Date: 23/06/2022

Stephen Payne, Patrice Brassard, and Jia Liu are guest editors of a special issue of Physiological Measurement: Focus on Cerebrovascular Control. The description of this focus collection can be found here. The deadline for submissions is 31 December 2022.

The Eleventh International Conference on Cerebral Haemodynamic Regulation (CARNet meeting) - update

Date: 22/04/2022

We are pleased to announce the 11th meeting will be held in Leicester, United Kingdom, from 27 to 29 October 2022. Abstracts will be due on July 18. More Details can be found at our meeting pages.

CARNet Logo Competition!

Date: 20/03/2022

CARNet is now the Cerebrovascular Research Network, and a new logo is in order, so CARNet has launched a Logo Competition for the new design! which should include the name or abbreviation of the network, and imagery that relates to some aspect/s of cerebrovascular research. Please send your submissions by April 30 to CARNet's email address:

The winner of the logo competition will receive free registration to our next CARNet conference, a gift card valued at £100 and published credit as the creator of the new logo. We look forward to receiving your logo ideas!

New contact channels

Date: 10/02/2022

For some time now, you might get CARNet's updates on Twitter. Check it out: @_CARNet__ (with one underscore before and two underscores after CARNet).

Our email address has also been updated, and you might write to us to us at:

CARNet's Name Change

Date: 08/02/2022

In the recent vote, a clear majority (84:2) was in favour of the name change for CARNet, which as become the Cerebrovascular Research Network from now on. Thank you very much to all those of you who participated.