Brain health in atrial fibrillation

Atrial fibrillation is one of the most common forms of an abnormal heart rhythm. We are seeking participants for our research on the effect of atrial fibrillation on the brain's blood vessels.

What's involved?

Participation involves one screening visit (~45 min) at the University of Auckland, Park Road, Grafton and one MRI scan visit (~1 ½ hours) at the Centre for Advanced MRI (CAMRI).

  • Screening visit: Height, weight and blood pressure measurements will be collected. Additionally there will be some cognitive testing performed on an iPad.
  • MRI scan visit: Various images of your brain will be taken, including anatomical and functional blood flow images whilst you perform two different tasks (a visual task where you will watch a flickering checkerboard, and a breathing task where you will breathe air enriched with a small amount of carbon dioxide (5%) for a short period of time). Images of your heart will also be taken. 
You will receive a $50 Countdown voucher for your participation.

Eligibility Criteria

  • People aged 55 years and over.
  • People with a normal heart rhythm.
  • People who are healthy with no significant medical conditions.
  • People not taking any prescription or over-the-counter medications (other than the oral contraceptive pill).

Contact details

Harvey Walsh

Doctoral Candidate

Further information

This study has been reviewed and approved by the Health and Disability Ethics Committee [2023 AM 9210] and expires 03/06/2024.