The human retina will perceive flicker above 200 Hz even if you won't consciously be aware of it.
There are a lot of anecdotal stories out there where people get a reduced sleep quality after switching to LED lighting in the bedroom. Is there something deeper to the story? Quite likely. The question now would be whether this affects everyone or if those people are outliers.
There are a lot of anecdotal stories out there where people get a reduced sleep quality after switching to LED lighting in the bedroom. Is there something deeper to the story? Quite likely. The question now would be whether this affects everyone or if those people are outliers.