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Functional brain MRI activations results. Panel A: functional brain responses to blue and red light stimulations for transient and sustained stimuli. Panel B: brain responses to the cognitive sustained attention task. Panel C: functional brain activations for the comparison between PVT task performed under blue light stimulation compared to PVT performed under red light stimulation (PVTblue > PVTred). Panel D: PVT reaction time under the different light conditions.
