Cavefish have an unusual body clock that does not respond to light.
In fact, these new understandings should lead us to the point where we die when the body clock stops—and not of disease.
If the official clock time disagrees too greatly with our body clock we are increasingly inclined to ignore the official clocks and heed our body clocks.
In more simple words, chronobiotic is defined as the agent causes phase adjustment of the body clock.
Non-24 is rare among visually impaired patients who retain at least some light perception; even minimal light exposure can synchronize the body clock.
The suprachiasmatic nuclei receive and interpret information on environmental light, dark and day length, important in the entrainment of the body clock.
