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Help us understand the mechanisms of chronic pain

We're looking for people with chronic pain (like CRPS) and pain-free volunteers to study changes in the way they that notice sensations in their affected limb.

We are running a study to understand the mechanisms of chronic pain, in particular Complex Regional Pain Syndrome (CRPS). Chronic pain is pain that has been experienced most days for at least three months. Some chronic pain conditions are associated with changes in the way that people notice or tend to sensations and other information about their affected limb. We would like to investigate these changes and hope that the knowledge we gain could eventually improve treatment.


We are looking for people who meet one of the following three criteria:

  • have suffered from CRPS for at least three months that primarily affects one upper or lower limb
  • have suffered from other chronic pain for at least three months that primarily affects one upper or lower limb
  • are healthy and pain-free


  • are over 18 years of age
  • are fluent in written and spoken English
  • don't have a history of neurological disorders (for example stroke, brain injury, or Multiple Sclerosis) or epilepsy
  • don’t have severe visual impairments (glasses or contact lenses are not a problem)

What you'll get

  • All participants will earn £10 per hour.
  • Participants with CRPS/chronic pain will receive reimbursement for travelling expenses.
  • Your participation will help contribute to the understanding of chronic pain.

We are accepting participants until 1 March 2020.

What's involved

You will take part in a series of activities which will last two to four hours altogether including breaks.

You will complete several questionnaires and undergo some tests of vision and of the sensations in your hands and/or feet (in which case we will ask you to take off your shoes and socks). You will also take part in a series of computer tasks. During the computer tasks, we will measure your eye movements and responses you make using the keyboard or computer mouse.

The research will take place at the University of Bath in the research facilities of the Department of Psychology. Participating is possible whenever it fits best with your schedule.

Take part in this study

To sign up for this research study or if you have any questions, please get in touch and mention whether you want to participate as someone with CRPS or other chronic pain, or as a pain-free control.

All information and data provided will remain strictly confidential and all reports will be anonymised. This research has been approved by the UK Health Research Authority (REC reference: 18/LO/1430) and the University of Bath Psychology Ethics Committee (REC reference: 18-251).