Participant is shown performing hearing test. The yellow indicator at the bottom of the screen indicates that they are doing the seventh of the fifteen rounds. The number shown (121) is their response to the sound segment they have just listened to.

This resource can be downloaded or viewed using the link: ts_hearingtest.jpg

If you have wget available (typically on linux systems), then you can also obtain a copy using the command

 wget  -nd  biobank.ndph.ox.ac.uk/ukb/ukb/images/ts_hearingtest.jpg