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How are circidian rhythms controlled in a blind person?
I was just reading about a new study that says that jet lag might have harmful effects to us. But I was wondering, if someone is blind, their body is incapable of knowing whether it is day or night. So what is it that controls them. Are they barely affected by jet lag, since they have adapted to having little trouble adjusting their rhythms?
thanks 2 cents. That clarifies. But do blind people have a better ability to change their rhythm?
marita, how in the world does noise affect circidian rhythms? or were u just giving an example of a enviormental cues that dont neccesarily apply to the question being asked?
3 Answers
- 1 decade agoFavorite Answer
There is quite a bit of evidence that the totally blind do have circadian rhythm issues, which is a bit like having permanent jet lag:
http://www.jcircadianrhythms.com/content/3/1/13
http://www.bvihealthsurvey.bwh.harvard.edu/registe...
- 1 decade ago
Circadian rhythms are not controlled only by light, but by other environmental cues eg noise.
- Anonymous1 decade ago
being blind does not imply that thier body can not react to light.
melanin for example reacts to light, which can be found all over the body. even in near albino blond hair people they are not completely without melanin.
