The research data includes:
•	MRI data – structural and functional (functional data is larger than the structural data) normally constituting 2 GB of data per person
•	EEG data – electrical activity – this constitutes a few GB of data per person
•	Actigraphy data (watch like instrument), measures movements, participants wear for 2 weeks and information about sleep patterns is collected.
•	eNotebooks with the last analysis preserved.
•	Non-digital data including consent forms, completed paper questionnaires and sleep diaries, these are kept in locked filing cabinets within BUIC in accordance with the Code of Practice for Research.
The data are stored in the University of Birmingham Research Data Archive.  Due to ethical constraints, supporting data cannot be made openly available.