Before revision:  In this study, we investigated whether simultaneous multimodal EEG-fMRI combined with eye-tracker measurements can be used to determine EEG signal feature associated with pupil sizechanges (e. g., vigilance measure) in healthy human subjects (n= 10 ) during brain rest with eyes open.
After revision:  Methods: Three 12-min resting scans (eyes open, fixating on the cross) were collected from 10 ) during brain rest with eyes open.