Photons play a crucial role in regulating wakefulness by activating specific hormones in the body. The discussion centers on whether these photons need to directly hit the eyes or if they can affect the body in other ways. It is noted that light can penetrate closed eyelids, which raises questions about the importance of functional eyes versus the presence of eyes for circadian regulation. Research indicates that blind individuals may experience free-running circadian rhythms, suggesting that the mechanism of light perception is complex. The conversation references various scientific studies and literature, including the role of melanopsin in light detection and its implications for treating circadian rhythm disorders. The effectiveness of devices designed to simulate light exposure in areas like the knee pit is also questioned, highlighting the need for further investigation into how light influences wakefulness and circadian rhythms.
