Cortisol effects on locus coeruleus activity (CELCA)

Cortisol effects on locus coeruleus activity (CELCA)

You can download the information sheet here. Or read on for a summary of the study.


What is the study about?

We are currently looking for both male and female participants to take part in a study investigating whether activity in a part of the brain called the locus coeruleus is associated with reward. Pupil size is a marker of activity in this brain region so we will be measuring pupil size in this experiment with a specialised camera called an eye tracker.

What does it involve?

This study consists of one ~40-minute session, involving listening and responding to certain auditory tones. During the session, you will be seated in front of a computer screen with your head placed on a headrest (this keeps your head still so that a camera can measure your pupil size). You will listen to a series of auditory tones and respond to certain tones by pressing a button as quickly as possible. Some of the auditory tones are associated with a monetary reward, and at the end of the task the computer will randomly select one of the auditory tones that you responded to.

If you responded to this auditory tone quickly enough you will win 20p or £20.

What are the benefits?

There are no direct benefits however we will reimburse you £100 for your time spent on the whole study period. This is to compensate you for the inconvenience of missing work or university.

You may also receive up to £80 reward if you perform well in the 4 auditory tasks.

Am I eligible?

To be eligible to take part in the study it is essential that you meet the following criteria:

  • You are aged 18 or over
  • You have English as a first language or have an equivalent level of fluency
  • You have normal or corrected-to-normal vision (no glasses but contact lenses are fine)
  • You do not have any problems with your hearing
  • You are fit and healthy with no medical problems
  • You will be not wearing eye make up

How can I participate?

If you would like any more information:


Tel: 07784763527