Abstract: The invention provides for exposing an extraocular (i.e., non-ocular) region of a human to light during sleep, which enhances REM sleep. Also provided are devices to carry out the methods. Key timing parameters ensure effective REM enhancement without adversely impacting a subject's circadian clock. The invention provides for improving cognitive function and performance in healthy individuals and in individuals suffering from a disease or disorder in which mental status is compromised.

Abstract: A method for resetting the phase of the human circadian clock and for enhancing alertness and performance in humans is disclosed. The method involves the application of non-solar photic stimulation, in the range of 15 to 150,000 lux, to any non-ocular region of the human body during wakefulness or during sleep. Preferably, the photic stimulation has a wavelength within the visible spectrum (˜400-750 nm). The method can be used to both delay and advance the circadian clock according to a phase response curve (PRC). The method may also be used for acute/immediate enhancement of alertness and performance. The method is applicable to alleviation of problems associated with “jet-lag”, shift work sleep disturbance, and other sleep disturbances involving misalignment of circadian rhythms. The method provides a novel technique for shifting the phase of the circadian clock, and enhancing alertness and performance, using existing, or newly-developed devices.

Abstract: The invention provides for exposing an extraocular (i.e., non-ocular) region of a human to light during sleep which enhances REM sleep. Also provided are devices to carry out the methods. Key timing parameters ensure effective REM enhancement without adversely impacting a subject's circadian clock. The invention provides for improving cognitive function and performance in healthy individuals, and in individuals suffering from a disease or disorder in which mental status is compromised. One embodiment of the invention (100) includes a fiber optics pad (160) attached to a power source, and lamp housing (120) by a fiber optics cable (140).

Abstract: A method for resetting the phase of the human circadian clock and for enhancing alertness and performance in humans. The method involves the application of non-solar photic stimulation, in the range of 15 to 150,000 lux, to any non-ocular region of the human body during wakefulness or during sleep. Preferably, the photic stimulation has a wavelength within the visible spectrum (.about.400-750 nm). The method can be used to both delay and advance the circadian clock according to a phase response curve (PRC). The method may also be used for acute/immediate enhancement of alertness and performance. The method is applicable to alleviation of problems associated with "jet-lag", shift work sleep disturbance, and other sleep disturbances involving misalignment of circadian rhythms. The method provides a novel technique for shifting the phase of the circadian clock, and enhancing alertness and performance, using existing, or newly-developed devices.