The Current Status of Non-visual Light Stimuli and Research on Circadian Rhythm Stability
LI Caifeng
LE Gang
LI Nuoyi
LIN Yandan
Abstract：Light can affect the circadian rhythm through non-visual channels.Previous studies have mainly used experimental methods to explore the non-visual biological effects of light,with a lack of research on the current status of non-visual stimulus values.This study measured the non-visual stimulus values of light in five typical environments:classrooms,offices,small monitoring rooms,home environments and shopping malls.A total of 28 locations and 363 sets of light non-visual stimulus values were collected.The DCLA-CPS(circadian phase shift based on the daily cumulative light exposure for biological effects)was calculated for different sleep types of individuals in these five environments.The results show that:(1)The non-visual stimulus values are highest in shopping mall stores;offices and study spaces generally meet the recommended daytime non-visual stimulus value.(2)The non-visual stimulus values are influenced by the distance from the window.(3)The circadian phase shift varies for different sleep type populations,depending on the non-visual stimulus values of the lighting in the environment.
Keywords：non-visual stimulus valuescircadian rhythmsDCLAparadigm
Publication Date：2025-04-30
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 31-38 )