A Portable Light Source for Bright Light Treatment

Compact ultra-bright supercontinuum light source

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A multi-source portable light emitting diode spectrofluorometer.

A portable luminescence spectrofluorometer weighing only 1.5 kg that uses multiple light emitting diodes (LEDs) as excitation sources was developed and evaluated. Excitation using a sequence of seven individual broad-band LED emission sources enabled the generation of excitation-emission spectra using a light weight (<1.5 kg) spectrometer. Limits of detection for rhodamine 6G, rhodamine B, and ...

Bright light for nonseasonal depression?

A 58-year-old man’s condition was stable on a selective serotonin reuptake inhibitor (SSRI) after 3 major depressive episodes in 10 years. He disliked the idea of taking a drug for a long time and at one point took himself off the SSRI and started taking St. John’s wort. However, the reappearance of symptoms of depression soon led him to go back on the SSRI. As discussed in previous columns, on...

Bright green light treatment of depression for older adults [ISRCTN69400161]

BACKGROUND Bright white light has been successfully used for the treatment of depression. There is interest in identifying which spectral colors of light are the most efficient in the treatment of depression. It is theorized that green light could decrease the intensity duration of exposure needed. Late Wake Treatment (LWT), sleep deprivation for the last half of one night, is associated with r...

Bright Storage of Light