Skip to main content
. 2021 Feb 1;12:625334. doi: 10.3389/fneur.2021.625334

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
a

Full width at half maximum.

b

Study employed a 5 min light pulse.

c

Study employed a 6.5 h light pulse.