What?
We are running a two-session experiment where we will record brain responses to colour using EEG and a flickering stimulus. As this experiment involves flickering lights it is not appropriate for sufferers of photosensitive epilepsy.

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With who?

We are testing 10 individuals with mild colour vision deficiency, 2 individuals with severe colour vision deficiency, and 10 individuals with full colour vision.

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What happens exactly?

​​​​​If you decide to take part you will be invited to the lab, you will have a full colour vision test taking approximately 15 minutes. We will then fit you with an EEG cap which will involve getting gel in your hair (you will be offered hair washing facilities at the end of the experiment) and we will attach surface electrodes to your lower eyelids (like the image at the top of the screen). Once fitted into the cap we will get you to do a 15 minute computer task which will identify your own personal brightness sensitivity, which will be used in the experiment. We will then start the EEG recording while you passively observe flickering lights for about 1 hour including breaks. The first session will take roughly 2 hours. 

In the second session of the experiment you will only do the final task where you passively observe flickering colours and so will take roughly 1.5 hours.

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And I get money?

​Participants are reimbursed £12 for each hour spent in the lab, paid at the end of the second session.​

We expect participation in both sessions to take about 3.5 hours.