1. New Zealand Brain Research Institute, Christchurch, New Zealand
2. Medical Physics & Bioengineering, Christchurch Hospital, Christchurch, New Zealand
3. Electrical and Computer Engineering, University of Canterbury, Christchurch, New Zealand
4. Sleep Unit, Christchurch Hospital, Christchurch, New Zealand
5. Department of Medicine, University of Otago, Christchurch, New Zealand
6. Department of Psychology, University of Canterbury, Christchurch, New Zealand