Sleep and bipolar disorder

This research looks into the relationship between sleep and mood.


Purpose of research

The purpose of this research is to explore the complexity of the relationship between sleep and mood and how it affects our mental health. Insomnia is common in people who experience problems such as anxiety, depression and bipolar disorder and research has shown that people with persistent trouble sleeping are more likely to develop problems such as depression.

Who can take part?

Initially, we are looking for individuals with bipolar disorder only. However, individuals who do not have bipolar disorder will be encouraged to apply at a later date.

What it involves

  • A phone call from a member of our research team. We will discuss the details of the study and you will be able to ask any questions you may have.
  • You will be asked to sign a consent form, stating that you wish to take part. The researcher will then ask you some questions about your sleep and mental health. This interview will take around 30-60 minutes. You may also be given some questionnaires to complete.
  • You will be asked to monitor your sleep for up to 60 days. This involves wearing a wristwatch that measures movement and filling out a sleep diary, monitoring how you feel each day.
  • After the sleep and mood monitoring period is over, the researcher will conduct a follow up interview. This will take around 20-30 minutes.

You will have the right to withdraw at any time. The data collected during the monitoring period will produce a chart. If requested, we will be able to send you a copy of your sleep patterns once the watch is returned.

How to take part

If you have a diagnosis of bipolar disorder and would like to take part, contact the study team at or on 029 2068 8401

Principal Investigator

Professor Ian Jones, Director of NCMH.
National Centre for Mental Health, Cardiff University, Hadyn Ellis Building, Maindy Road, Cardiff, CF24 4HQ
+44 (0)29 2068 8401
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