Table 2.
ED50 for melatonin suppression and phase shifting in humans and hamsters.
| Wavelength (nm) | FWHMa (nm) | Photon flux (Photons/cm2/sec) | Photopic lux | Melanopic lux | |
|---|---|---|---|---|---|
| Melatonin suppression | |||||
| Syrian hamsterb (41) | 503 | 20 | 1010.11 | 0.01 | 0.04 |
| Humanc (42) | 555 | 10–14 | 1012.94 | 21.14 | 4.39 |
| Phase shifting | |||||
| Syrian hamsterb (41) | 503 | 20 | 1011.49 | 0.33 | 0.93 |
| Humanc (42) | 555 | 10–14 | 1013.07 | 28.57 | 5.85 |
Full width at half maximum.
Study employed a 5 min light pulse.
Study employed a 6.5 h light pulse.