Recent research has shed light on how different levels of illuminance—the measure of the amount of light—can enhance alertness and cognitive performance in humans. The study found that higher light levels affect specific areas of the brain region known as the hypothalamus, enhancing certain cognitive functions during tasks that involve executive and emotional processing. The findings were published in the journal eLife. The primary motivation behind the study was to understand how varying intensities of light impact the human brain, particularly the hypothalamus, which plays a crucial role in …