I know a lot of people observe this. Including myself.
For some weeks now I sleep very few hours and when come back after school I go for a little sleep. The thing is tht tht I must leave for training @ 6 PM. And I have never overslept, meaning I wake up from a deep sleep exactly 10min before 6!? How can my body tell when it is time to wake up for me. I have did it sereral times when I had no alarm clock at the moment, before going to sleep I just say in my thoughts for several times tht I will wakr up in time to leave for school. I have done this when going to sleep @ 11PM and 3AM and results are the same! I wake up in time. Several times I have woken up at +- 15min the time I ordered for myself to wake up. How does our brain know the right time? During sleep! I know tht it is active during sleep, but not all times, it shuts down several times a night - what we call "deep" sleep. well not completely shuts down, but stops thinking.
I duno, just thought it to be interesting and maybe you know where the timer is stored;)
Cheers!

When I was in the navy, working shifts at all odd hours, I found myself waking up right on time to go to my next shift. No alarms or wake-up calls or anything, I'd just get up when it was the right time. I still do it a lot.

i get up at 5:45 for school each day. on weekends, i wake up at 5:45 without alarm clock and go back to sleep ;)

Internal Clock? Yes, there is. Mine works fine except the snooze button sticks sometimes.

I used to work Monday to Friday, 8 am to 4 pm.
With or without the alarm I'd wake up 7am on the button.

But now I work strange hours.

Four days working from 7 am to 6 pm, four days off, followed by four night shifts from 7pm to 5 am and four more days off.

My internal clock is Screwed.

On piece of advice: TAKE A NAP WHENEVER YOU CAN!!!

Even my biological clock's malfunctioning nowadays (due to odd sleeping hours).

Cheerio,
The Fox Lady;)

amfoxlady,

Thanx for the advice. I do :)

I hate days. I feel so tired all the time.

Sounds like someone needs to wrench themselves away from the drudgery of labour, eh? I suggest becoming a slacker and live off the pity of relatives.

I did mention this in my sleep posts i think.

Nope,Man has no track of time,(Only his clock has;)).
a detailed study on time keeping capabilities of man was conducted on various subjects(i dont remember the number,but it was quite a lot.)by MIT.an example of one subject is shown below:

Man was kept isolated from the outside world for 4 days and was given proper care under off course.at significant intervals he was asked time(approximations),only in just 3% of askings he was near,other wise he was way far from the actual time.

similiar studies were conducted from various people Randomly,that is while walking casually people who werent wearing watches were asked about time,only 15% percent of people were able to give correct time.

So scientists concluded that there's nothing as of Biological clock.man only can respond to time,by direct interaction with his surroundings.that is by sunrise,sunset etc...


bye!

There was an interesting point the MIT people noted,that i would like to point here.The test were first carried out in bigger cities like NYC,San etc and then they moved on to smaller ones like Dallas etc...
They noticed that people living in cities gave a higher amount of accuracy in terms of time than the slow city people.

( eg.Athens county in GA was far behind)
bye!

Just something called HABIT.

Common patterns programmed in your brain. It's created in your conscient, and as it repeats, it creates a pattern in your subconscient which awakes you in the habitual time. ;)

It differs to the term "Biological Orientation" (I think... I forgot the name in English... :() though, as it's related to magnetic vibrations from Earth, star patterns, and magnetic influeces of the moon and so on... ;)

Originally posted by TruthSeeker
Just something called HABIT.

Common patterns programmed in your brain. It's created in your conscient, and as it repeats, it creates a pattern in your subconscient which awakes you in the habitual time. ;)

Nelson, could you tell the difference between subconcious and unconscious???

habit is what creates the subconcious right? how about the unconcious? is that where the Inner Child is?

Thx! ;)

bubbl3,

Well... I don't like to call it "unconscious", I prefer the term supraconscient.

Subconscient is the part where patterns are created. It also translates a rational language into a more Essencial one to the Supraconscient.

Supraconscient is the bigger part. Yes, you said it very well: the Inner Child. :)
It's the part that manifestates your Heart desires and the patterns of your subconscient and what you create in your life.

I explained this more in the details in end of the thread "The Wiccan Rede" (http://www.sciforums.com/showthread.php?s=&threadid=6418&perpage=20&highlight=supraconscient&pagenumber=2)
The whole thread is good. You can see my post about it at the end. I'll post this and more explained versions later, with ALL the implications (if I can... it's possible to write a book about it...:bugeye: )

Love,
Nelson

thx for the thread, nelson! ;)
and don't forget to tell us if you ever write a book! :D

edited to ask: our rational/logical thinking is in the conscious right?

Yes :)

Nelson, could you tell the difference between subconcious and unconscious???

Well... I don't like to call it "unconscious", I prefer the term supraconscient.

When it comes to reality, using Truthseekers definition, I would have to agree that Truthseeker is completely "supraconscient."

Subconscient is the part where patterns are created. It also translates a rational language into a more Essencial one to the Supraconscient.

Supraconscient is the bigger part. Yes, you said it very well: the Inner Child
It's the part that manifestates your Heart desires and the patterns of your subconscient and what you create in your life.

Copied and pasted from the "Truthseeker Unabridged Dictionary of Wacky Nonsensical Definitions, Volume 20."

Look out Webster, Johnson, Jung and Freud !

This may offer some help:

Two papers published nearly back-to-back in 2000 pushed the study of mammalian chronobiology light years ahead. The first paper, from the lab of Joseph S. Takahashi, a Howard Hughes Medical Institute investigator, and the Walter and Mary E. Glass Professor, department of neurobiology and physiology at Northwestern University, was published April 21st. The second, from the lab of Steven Reppert , chairman of neurobiology and Higgins Family professor of Neuroscience at the University of Massachusetts Medical School, hit the scientific world May 12.

Reppert, at Massachusetts General Hospital at the time, and his team showed that the murine circadian clock is orchestrated by positive and negative transcription and post-translation feedback loops. Using mutant mice, they found that the Period2 protein positively regulates the Bmal1 gene loop, and that cryptochrome proteins negatively regulate the Period and Cryptochrome loops. The Takahashi lab paper showed that a mutation of a specific kinase that modifies circadian clock proteins has a clear effect on the mammalian circadian clock.

"When we went to humans a candidate gene popped out," says Takahashi. That prospect turned out to be casein kinase I epsilon, located on human chromosome 22. "It became interesting because of the earlier double-time casein kinase I mutation cloned in flies".

www.the-scientist.com/yr2002/apr/hot_020415.html

hello everyone,
When sleeping, we do follow a cyclic pattern on the alternance of rem sleep and 'light' sleep, alternance that occurs every 90 min (with slight variation between people).
And we do wake up every 90min (at the end of each cycle), so maybe we do have the capacity to wake up at determined hour by subconciously knowing how many cycle we made, and so knowing roughly how much we slept ?

A fun fact about this sleeping cycle: An experiment made on cat showed that when we gave two times more oxygen to breathe, the cycle of these cat were two times faster (falling from 60min to 30min).... It is nowadays the only proven way of modifying these cycles....

Our biological cycles:

Ultradian: Around 90 minutes.
Circadian: Around 24 hours.
Infradian: Around 28 days.

Yes, they are indeed built around the cycles of the world we developed on.

Thought this might help:

"Perception of time - It is vary curious in cases to notice what correct ideas of time are entertained during hypnosis. For instance, if a patient is told to waken in forty-five minutes, the hypnotist himself will be utterly at a loss to measure this period, without frequent reference to his watch or clock, but the subject will ver often waken to the minute." - The Practice of Hypnotic Suggestion by George C. Kingsbury, M.D.

i wake up at 10:30 everyday! ahhhh

i wake up 5 min before my alarm, regularily. that is after changing the alarm time too, so not a habit i would think. there are many things that science refuses to confront, things we note in our daily lives, such as this phenomena. another such is one women often remark on, that when they spend time with other women, their menstrual cycles become attuned and conform with each other.

tho the second may well be due to hormones emitted which coodinate the others cycle, why do scientists not ponder on such things. are they so irrelevant?

i have not read any(logical) reasons for the time clock. i suppose
the men of science would claim its just coincidence.

Perhaps this is what really happend:

You're actually wake several before your "real wake time", but some part of mind still in the "dream land". You open one of your eye, peep on your clock on the wall or table, and think "Oh, it's not the time to wake, yet". And you go back to the dream land.

Finally you peep on the right time you programmed to wake, and big trumpet roar in your head *doood*, and you think "Yep, it's the time!". Then you're completely wake and forgot that you've ever wake several times before.

Tada! Validate this hypothesis with recording camera. :D

this is not possible for me, because my alarm "clock" actually is a sterio 3 metres from my bed with no visable clock display (it can't be seen from my position). so it must be smth else;)

See I think if ou put it in your head what time you wake up you usualy can hit the mark. If I know I need to be awake around a certain time then 9.5/10 times I wake myself up.

The thing about waking up at the same time eveyday is simple, humans are good at keeping up routine. But I don't know how we know what time it is.

Reseachers have found that the Super Chiasmatic Nucleus (SCN) is what is genrally responsible for what we call "the biological clock". In rats, if this is lesioned, circadian rhythms are disrupted - the animal would still get enough sleep but would sleep at random times throughout the day/night. Things such as scheduled wheel running get disrupted, along with eating patterns, and hormonal secretion.

The individual neurons of the SCN have synchronized (the primary synchronizer is the rising/setting sun) firings, as if they were tickers on a clock. If these individual neurons are separated and kept alive, they will pulse at regular rates but won't be able to synchronize.

I then guess there is another structure in the brain (maybe in the SCN also) that counts these pulses. This all happens beneath consciousness.

Source: Carlson, Neil R. Physiology of behavior. Allyn and Bacon: Bostion. 297-303.

-Xenu