“…[65]2017 | Blue (483 nm, 13 lx) Green (555 nm, 91 lx) White (158 lx) (OLED) Exposure time: 10 min + 5 min PVT under white fluorescent light (illuminance, 300 lx) | Psychomotor vigilance test (PVT) Time zone of experiment: 09:30–14:00 | ·Heart rate·HRV·Reaction time, minor lapse (PVT) | Dai Q, Uchiyama Y, Lee S, Shimomura Y, Katsuura T. [61] | 2017 | Blue (467 nm) Irradiance: 7.5, 15, 30 μW/cm 2 Pulse width: 50, 100, 200 μs White (color temperature 2878 K, 14.75 μW/cm 2 ) (LED) Exposure time: 12 min | | ·Pupillary constriction ·EEG ·Subjective evaluation (concentration, sleepiness, perception of blueness) |
Yuda E, Ogasawara H, Yoshida Y, Hayano J. [66] | 2017 | Blue (485 nm, 8.02 μW/cm 2 ) Orange (622 nm, 6.54 μW/cm 2 ) (OLED) Exposure time: 30 min during lunch break 5 min of PVT under white fluorescent light (color temperature 4010 K, illuminance 450 lx) | Psychomotor vigilance test (PVT) | ·Heart rate ·HRV ·Reaction time, minor lapse (PVT) |
Lee S, Muto N, Shimomura Y, Katsuura T. [62] | 2017 | Blue (466 nm) Green (527 nm) Irradiance: 20 μW/cm 2 Pulse width: 1 ms Inter-stimulus interval: 0, 250, 500, 750, 1000 ms | | ·Pupillary constriction |
Lee S, Uchiyama Y, Shimomura Y, Katsuura T. [63] | 2017 | Blue (464 nm) Green (526 nm) Pulse width: 2.5 ms Photon density: 15.2 log photons/cm 2 /s Blue, green, blue + green | | ·Electroretinogram (ERG) ·EEG ·Visual evoked potential ·Pupillary constriction ·Subjective evaluations (bluish, greenish) |
Kozaki T, Hidaka Y, Takakura JY, Kusano Y. [57] | 2018 | Blue (465 nm) Irradiance: 52 μW/cm 2 100-Hz flickering (10% duty tatio) non-flickering light (LED) Dim (< 3 lx) Exposure time: 01:00–02:30 | | ·Melatonin |
LED light-emitting diode, OLED organic light-emitting diode…”