How Light Affects Biological Systems

Changes in lighting conditions have broad effects on diverse physiological and behavioral functions, including circadian rhythm, mood, and cognition (LeGates et al., 2014).

The stability of the solar cycle serves as a crucial cue for regulating mammalian behavior, mainly through its significant impact on mood and cognitive function. These influences have been extensively studied in laboratory animals (Bedrosian et al., 2011; LeGates et al., 2012) and humans (Vandewalle et al., 2010).

Disruptions in light exposure, whether due to natural environmental factors or human activities such as crossing time zones and experiencing jet lag, as well as engaging in shift work, have been associated with depressive symptoms and cognitive impairments (Roh et al., 2016).