Tracking the internal clock

Why does light help us wake up in the morning? Why does phone light bother us in the evening? And what about blue light?
Humans have an internal clock that is synchronized with our environment every day anew. This happens via a neural pathway that connects our eye with the internal clock in the brain, thus creating an interface between internal and external time. Neuroscientist Prof. Dr. Manuel Spitschan presents the latest research in this field – and helps you determine whether you are a lark (morning person) or an owl (night person).

Max-Planck-Förderstiftung