Tag

Lights
06
Nov

We’re all sensitive to light at night, but some are much, much more sensitive than others

November 6, 2019
by Elise McGlashan, PhD & Parisa Vidafar, PhD on November 5th 2019 in Clocks in the Spotlight Humans evolved in an environment with only very bright (sun) or very dim (moon or fire) sources of light. Today, artificial lighting enables us to spend hours per day at intermediate light levels. Our recent study shows that the response of the...
Read More
06
Nov

High sensitivity and interindividual variability in the response of the human circadian system to evening light

November 6, 2019
PNAS June 11, 2019 116 (24) 12019-12024; first published May 28, 2019 https://doi.org/10.1073/pnas.1901824116 Significance: Electric lighting has fundamentally altered how the human circadian clock synchronizes to the day/night cycle. Exposure to light after dusk is pervasive in the modern world. We examined group-level sensitivity of the circadian system to evening light and the degree to which sensitivity varies between individuals. We...
Read More