 Ethical consideration Modern neuro-imaging using MRI is highly sensitive and can detect incidental findings. Our novel EEG analyses also have the potential to detect incidental findings. It is well known that spikes during an inter-ictal EEG have limited clinical significance. However they are seen more frequently in people who have a liability, or lowered threshold, for epilepsy. If any concern is raised about the EEG findings the participant will be reviewed by Dr Blackburn and if appropriate referred onto another neurological colleague. Any incidental findings detected by MRI will be referred to an NHS neurologist through the VPH-DAREIT project researchers. The Patient Information Sheet and consent will make participants aware of these risks before they take part in the study. 