Illuminating Circadian Rhythms

This chapter explores the intricate ways in which our eyes detect light and its critical influence on circadian rhythms. It emphasizes the role of various retinal cells, including intrinsically photosensitive retinal ganglion cells and serotonergic neurons, in adapting biological clocks to changing light conditions. The findings challenge traditional notions of neurotransmitter functions and highlight the importance of understanding these mechanisms for both animal behavior and human health.