What happens to the body clocks of blind people?

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alena roberts

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What happens to the body clocks of blind people?
« on: 03/02/2009 22:30:02 »
alena roberts  asked the Naked Scientists:
   
Chris,

You mentioned on this week's ask the naked scientist's podcast that much of the body's internal clock is regulated by our eyes and what they perceive. If that is the case, how is the internal clock of someone who is completely blind different? myself have a degenerative eye disease and it is possible that I may lose all of my vision. If I do, will my internal clock be effected and how?

Sincerely,
Alena Roberts Corvallis Oregon

What do you think?
« Last Edit: 05/02/2009 17:30:42 by chris »

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Offline Chemistry4me

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Re: What happens to the body clocks of blind people?
« Reply #1 on: 05/02/2009 04:42:47 »
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People who are profoundly blind may still be able to 'see' light and subconsciously use it to regulate their body clocks, research funded by the Wellcome Trust and National Institutes for Health has shown.

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An international team of researchers including scientists from the UK and US found that even if a person's rods and cones - the cells of the eye responsible for vision - have been completely destroyed, the patient may still be able to detect light, even if they are unaware of it.

http://www.wellcome.ac.uk/News/Media-office/Press-releases/2008/WTX042851.htm

There was also an interview here on TNS:

Setting the Time on your Body Clock

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lyner

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Re: What happens to the body clocks of blind people?
« Reply #2 on: 05/02/2009 16:39:13 »
Isn't the pineal gland also light sensitive?

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Offline Chemistry4me

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What happens to the body clocks of blind people?
« Reply #3 on: 05/02/2009 21:50:42 »
In some animals, the pineal gland serves as a light-influenced biological clock.