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Light Spectrum Signaling

Meaning

Light Spectrum Signaling is the neurobiological process where specific wavelengths within the visible light spectrum are differentially detected by specialized photoreceptors in the eye, triggering distinct neural signals to the brain’s master clock and other non-visual centers. Blue-green light is the primary signal for circadian regulation, while other spectra may influence mood and cognitive function through separate pathways. This differential signaling allows light to act as a highly precise, multi-functional environmental cue. Understanding this specificity is vital for chronotherapy.