This is the instructional image shown to participants immediately prior to the task fMRI investigation at the imaging centres. The participant has been given a small device with 2 buttons on it, and they are being asked to press the appropriate button in each of a series of images they are about to be shown.

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

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

 wget  -nd  biobank.ctsu.ox.ac.uk/ukb/ukb/images/fmri_task_instruct.jpg