Effect of quantity and intensity of pulsed light on human non-visual physiological responses.

ABSTRACT:

Background

Exposure to pulsed light results in non-visual physiological responses in humans. The present study aims to investigate whether such non-visual effects are influenced to a greater extent by the intensity of lighting or by the power (quantity) of lighting.

Methods

>Twelve healthy young male participants (23 ± 0.3 years, 21-24 age range) were recruited for the present study. Participants were exposed to light of varying levels of intensity and quantity whose frequency was held constant across the conditions, which consisted of exposure to blue (different intensity, constant quantity) and white (constant intensity, different quantity) LEDs. Pupillary constriction, electroencephalogram (EEG) alpha band ratio, subjective sleepiness, concentration and perception of blue

SUBMITTER: Dai Q 

PROVIDER: S-EPMC5405487 | biostudies-literature | 2017 Apr

REPOSITORIES: biostudies-literature