How’d U sleep?

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    • #485
      2810712
      Participant

      I have a bad habit to sleep keeping lights on alover the night , this is bad from the electricity-wastage pt. of view; but is it bad from biological point of view also ? I know that optical nerves stimulate piniel gland which secretes serotonin . Lack of stimulation may cause less serotonin to be secreted , isn’t it? This may have some bad effects on us.
      And extra stimulation may also cause some problems , but I don’t think they are that severe . Hey, but keeping light on alover the night doesn’t lead to extra stimulation as eyes are closed . So , being on or off of the light doesn’t seem to matter , still I feel that as it is unnatural for wild organmisms to sleep under light , it maycause some harm .
      There is another reasone why i think that way-in the ayurveda it is told that there are two secretions in the brain – teja and oja [ both mean ‘btightness’] These keep our spirits high , this is what serotonin does. Also, it is told that if some body sleeps in the daytime , due to sunlight , his teja and oja are reduced . So , if we are asleep , then how sunlight can cause any harm as eyes are closed???

      hrushikesh

    • #20210
      Chris4
      Participant

      umm. but when you close your eyes with the lights on, light still gets through. Your eyelids do not block all the light (try it, close your eyes and look up at the light, it hurts ). I would therefore find it harder to get to sleep as it is not completely dark. I think you need to look at melatonin also. It is released by the pineal gland when it gets dark (its inactive during the day) so you feel more tired and more likely to fall asleep. Bright light directly inhibits the release of melatonin. I therefore think it would be harder to sleep with the lights on, as these hormones are not produced as much. That is why its bad to sleep with the lights on, as a lack of sleep is not good for you.
      It may also be good to give your eyes a break.

    • #20219
      pedro21101
      Participant

      I think that what nature (evolution) has once done it has its own purpose. And we cannot speculate if it is useless or not. Cause it is result of milion years evolution.

    • #20251
      2810712
      Participant

      Thanks, I coudn’t remember the name melatonin.. hm.
      I have experienced that light enters through eyelids, but is it in the enough ammount to affect us? probably yes, so I have to sleep in dark and follow the guidelines of evolution ! This also means the theory put in ayurveda is quite correct , isn’t it???

      hrushikesh

    • #20261
      biostudent84
      Participant

      The thing most people call a “biological clock” is scientifically known as the circadian rythm. This highly accurate rythm keeps our bodies in balance. However, the “clock” needs to be periodically adjusted. If not, the rythm becomes “free running” and will run on a slightly longer time period…about 24.25 to 24.5 hours. Zeitgebers, German for Time Givers, are cues to reset the Circadian Rythm to it’s proper state.

      The zeitgebers in most organisms are sunrise and sunset (not light and dark as is the common error). When we see the sun set, we go to sleep. When we see the sun rise, we wake up.

      P.S. Even with your eyes closed, your Pineal Gland (sometimes called the “third eye”) will detect the light and will continue to function as it would during the day…including production of melatonin.

    • #20269
      James
      Participant
      quote :

      P.S. Even with your eyes closed, your Pineal Gland (sometimes called the “third eye”) will detect the light and will continue to function as it would during the day…including production of melatonin.

      How does this work? Does it measure the light coming through the closed eye?

    • #20273
      biostudent84
      Participant

      The pineal gland is located just at the base of the brain. Exactly how it detects light is unknown (unless someone else has more information I haven’t seen yet…which I’m hoping is true because I am interested myself ), but it is known to be highly functional during the day.

      This is why you hear that natural light is better for you than a lamp…the pineal gland is stimulated better by the sun.

    • #20306
      2810712
      Participant

      I didn’t know that pineal works althogh the eyes are closed, it’s surprising!!!Its also clear that its better to follow natural rhythm and to study in daytime under fusionlamp and sleep at nights.

      3$ thanks for the info. biostudent84
      U said, The zeitgebers in most organisms are sunrise and sunset (not light and dark as is the common error). When we see the sun set, we go to sleep. When we see the sun rise, we wake up

      I admit that light and sunrise and dark and sunset are different , but what exactly is the
      point of diff. relevant here??? Probably, as we don’t know how pineal is activated we can’t tell .

      hrushikesh

    • #20307
      2810712
      Participant

      Oh I now understood why i was feeling uneasy in dark, I have some days before I
      suffered from some deficiency or imbalance bet. the ammounts of serotonin and a chemical named some what 1,5,- dihydroxy- something or soming like that[ sorry, I will confirm it from my doc. soon] I think,. the serotonin was not being produced
      adequately inorder to keep me normal
      , so one day I suffered from ants in my body.{ I don’t know the exact word in english, sorry; ants come in body in case of high B.P., so U may now understand]
      That was really thrilling! But, when I closed the light , serotonin prroduction was no longer favoured , so I felt uneasy , so I couldn’t sleep for hours. I am being treated for this , so what should I do then, sleep in dark or in light???

      I think, as I would recover to some extent , I would start sleeping in dark because today I can’t do that, till that time I would sleep in light; what do U think???

      hrushikesh

    • #20360
      Chris4
      Participant

      Ants? Is that like pins and needles? (You won’t understand that term if your not english 😛 )
      Like lots of little things crawling inside you and on your skin.
      Are you taking 5-HTP? It increases serotonin levels. And is often taken by people who suffer from insomia (not able to sleep). In UK ive seen it avaliable in shops. So its easy to buy. But expensive 😈
      Be careful tho. Too much serotonin is very bad for you. 5HTP is actually used to treat obesity aswell as its reduces hunger or appetite. But thats another topic. 😀
      5-HTP increases melotonin aswell. Helping you sleep.
      Also Serotonin and melatonin use the same building blocks: tryptophan (amino acid).
      Milk contains a lot of tryptophan. Explains why the old remedy for insomia is to drink milk before you sleep.
      I would recommend you switch slowly to sleeping in the dark. I saw these amazing lights which you can plug in and put near your bed. They simulate sunset and sunrise so its light when you start to sleep but they gradually get dark and you set the time you want your room to gradually get light in the morning. That may help??

    • #20370
      biostudent84
      Participant
      quote 2810713:

      I didn’t know that pineal works althogh the eyes are closed, it’s surprising!!!Its also clear that its better to follow natural rhythm and to study in daytime under fusionlamp and sleep at nights.

      3$ thanks for the info. biostudent84
      U said, The zeitgebers in most organisms are sunrise and sunset (not light and dark as is the common error). When we see the sun set, we go to sleep. When we see the sun rise, we wake up

      I admit that light and sunrise and dark and sunset are different , but what exactly is the
      point of diff. relevant here??? Probably, as we don’t know how pineal is activated we can’t tell .

      hrushikesh

      It’s because a zeitgeber is an event, not a quality of the enviornment. When the atmosphere goes from light to dark, that is an event you can witness. Simply being dark is a quality, not an event.

    • #20371
      biostudent84
      Participant
      quote 2810713:

      Oh I now understood why i was feeling uneasy in dark, I have some days before I
      suffered from some deficiency or imbalance bet. the ammounts of serotonin and a chemical named some what 1,5,- dihydroxy- something or soming like that[ sorry, I will confirm it from my doc. soon] I think,. the serotonin was not being produced
      adequately inorder to keep me normal
      , so one day I suffered from ants in my body.{ I don’t know the exact word in english, sorry; ants come in body in case of high B.P., so U may now understand]
      That was really thrilling! But, when I closed the light , serotonin prroduction was no longer favoured , so I felt uneasy , so I couldn’t sleep for hours. I am being treated for this , so what should I do then, sleep in dark or in light???

      I think, as I would recover to some extent , I would start sleeping in dark because today I can’t do that, till that time I would sleep in light; what do U think???

      hrushikesh

      Um, what does it mean to “close the light”? I want to say that it means to turn it off, but would prefer someone to confirm it (in electronics, closing a circut means turning it on, so I’m a little confused, lol).

      But the answer is, yes. We have sightly different body physioligies during the day that we have at night. I’ve been able to expiremt with this on the weekends too. I recently developed insomnia, and on days I don’t have class, I don’t take any sleeping pills. Although late at night, I am unable to sleep, I am still resting. I experience a deeper state of relaxation than I could during the day.[/quote]

    • #20378
      MrMistery
      Participant

      I am almost sure that closing the light means turning it off biostudent. In my language to we have the same word for “to close” and “to turn off”
      Regards,
      Andrew

    • #20396
      biostudent84
      Participant

      Thanks, Andrew…that’s what I thought, but you can never be sure.

    • #20397
      2810712
      Participant

      @ chris4
      I’m from Bharat, so I didn’t know that word, sorry. Thanks, now I know that.
      I also drink a cup of milk before I sleep. That’s useful ,I think.

      My doc. said that the level of serotonin and that 1,5- compound balance each other
      So, does 5-HTP fit here???

      I have not seen such type of lamp [ sunrise/ set simulator] . Although I get that I would probably not wish to close ,oh sorry, turn it off .

      @ biostudent84,
      LOL- What’s that???

      Ya, dark/light its quality . But, what’s the difference between sensory input affecting the
      desire to sleep bet. simply dark and sunset . Atmospheric sensory inputs may also be important. This means that light intensity isn’t the only affecting thing .

      I also, wonder if zeitgebers are same for all humans and the direction of their action is also the fixed [i.e. favour the sleep or not] then how can there be people active at night???

      Also, how does the ‘brainclock ‘ of scientists living in submerged labs under sea for months get maintained ???

      hrushikesh

    • #20399
      2810712
      Participant

      Probably I’ve got the ans. from the study time discussion.

      As MrMistry said , the interpretation of some of sensory inputs of zeitgebers may get
      adjusted. It will require atleast a month for us I think. But I don’t think that things like stimulation of pineal by optic nerve in light , can be changed. So, its not completely answered. Also, if this is the answer, it only tells that
      some people can be owls; but , I think, nobody can be born owl that people claim to be.

      hrushikesh

    • #20402
      biostudent84
      Participant
      quote 2810713:

      I also, wonder if zeitgebers are same for all humans and the direction of their action is also the fixed [i.e. favour the sleep or not] then how can there be people active at night???

      Also, how does the ‘brainclock ‘ of scientists living in submerged labs under sea for months get maintained ???
      hrushikesh

      You’re absolutely right. Some people are active at night, rather than during the day…myself included. However, these people, even though active, are operating at a reduced capacity. They are not able to think as straight or coordinate their movements as well as they would if they were active during the day. It’s one of those “possible but not recommneded” things.

      As for submerged labs, where there is no presence of zeitgebers, the Circadian Rythm (aka “brainclock”) is said to become “free running.” While their Rythms will roughly follow a one-day schedule, it would be slightly off…but only by a few minutes over or under.

      I’ll try to make a graph below:

      Time of day:
      —- is night time, ==== is daytime
      (night…)(day……………)(day…..)
      ———-============———-
      Active hours of subsequent days in a Rythm with zeitgebers:
      —-is inactive hours, ==== is active hours
      ———-============———-
      ———-============———-
      ———-============———-
      ———-============———-
      ———-============———-
      ———-============———-
      ———-============———-
      Active hours of subsequent days in a Free Running Rythm
      ———-============———-
      ———–============———
      ————============——–
      ————-============——-
      ————–============——
      —————============—–
      —————-============—-

      In the free running system, the time between active/inactive hours remains about the same, there is a slow but steady straying from the normal rythm.

    • #20473
      2810712
      Participant

      Thnk U V. much biostudent. It cleared my doubts , the graph was cool ! ! !

      hrushikesh

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