Photic memory for executive brain responses

摘要: Light is a powerful stimulant for human alertness and cognition, presumably acting through photoreception system that heavily relies on the photopigment melanopsin. In humans, evidence melanopsin involvement in light-driven cognitive stimulation remains indirect, due to difficulty selectively isolate its contribution. Therefore, role regulation be established. Here, sixteen participants underwent consecutive identical functional MRI recordings, during which they performed simple auditory detection task more difficult working memory task, while continuously exposed same test light (515 nm). We show impact of executive brain responses depends wavelength individuals were prior each recording. Test-light widespread prefrontal areas pulvinar increased when had been longer (589 nm), but not shorter (461 light, than 1 h before. This wavelength-dependent exposure consistent with recent theories dual states. Our results emphasize critical are, date, strongest favor melanopsin, may confer form “photic memory” function.