X. C. CHEN
2) Age;
3) The number of yawning between the starting time of last
primary sleep time to the starting time of next primary sleep
time;
4) The sleep time of this primary sleep;
5) The starting time of primary sleep this time;
6) The first natural awa kening time of this time;
7) The ending time of pri ma ry sleep this time;
8) The sleep time of this secondary sleep;
9) The starting time of secondary sleep this time;
10) The natural awakening time of secondary sleep this time.
Experimental Procedure
1) The total sleeping time of a subject a day is 8 hours. Pri-
mary sleep period accounts 7 hours and secondary sleep period
accounts 1 hour.
2) Transferring the primary sleep time 3 hours later. It is a
kind of protection that extends 3 hours of primary sleep every
week. After testing extending 5 hours of primary sleep, we can
discovered the subjects’ emotions are easy to become impatient
after changing the starting time of primary sleep beyond 5
hours many times in a month. It can be basically accepted when
reducing to 3 hours.
3) Sleep schedule is as follows:
Preparing period: The forecast period was in July 15th and
16th. The primary sleep was adjusted at 0 a.m. and get up at 7
a.m. Secondary sleep started at 13 p.m. to 14 p.m.
First week (July 17th - 23rd): The primary sleep was ad-
justed at 3 a.m. and get up at 10 a.m. Secondary sleep started at
16 p.m. to 17 p.m.
Second week (July 24th - 30th): The primary sleep was ad-
justed at 6 a.m. and get up at 13 p.m. Secondary sleep started at
19 p.m. to 20 p.m.
Third week (July 31st - August 6th): The primary sleep was
adjusted at 9 a.m. and get up at 16 p.m. Secondary sleep started
at 22 p.m. to 23 p.m.
Fourth week (August 7th - 13th): The primary sleep was ad-
justed at 12 a.m. and get up at 19 p.m. Secondary sleep started
at 1 a.m. to 2 a.m.
Experiment Approach
1) Experiment approach, observation approach and statistical
approach. The staff were divided into groups and took turns on
duty to organized experiment and collected data at experiment
field. Each subject’s single observation item should be recorded
each day.
2) Some of the data were written by subjects themselves.
3) Statistics aspect: using 18 people’s data to count in general.
In the observed certain span of magnitude larger items, remove
the two highest and two lowest data, and use the remaining 14
data for statistical analysis.
Result
The adjustment of two-day probationary period is very
smooth. All the 18 people can do as the requirement.
Observing the average yawning numbers between the next
two sleep times.
On the provisions of the next two sleep time refers to the
original sleep time and sleep time when provisions. Observing
the yawn numbers is actually observing the sleepy degree. The
more yawn number it has, the higher the sleepy degree it will
be. From the result we can see: 1) The yawning number showed
a decreasing trend in the same test weeks. 2) In the 3rd week,
the average number of yawn was the highest. 3) It is interesting
that yawn was infectious. Sometimes we just did not yawn a
long time. Once someone yawned, most of the time someone
would follow. Sometimes all the people would follow one after
another, as well as the stuff. 4) The yawn number was counted
by the subjects themselves.
Observation of the sleep initiation time of the primary sleep.
In the previous four days of each test week, we set a com-
pulsory sleep initiation time, but we took a flexible way in the
after three days. When view from the frequency of yawns, we
noticed that during the beginning few days, people were tend to
take naps to a much high degree. What’s more, they apt to feel
sleepy near the time they regularly fall asleep. After a few days’
adjustment, it appeared to come close to the time they are made
to sleep in the test, but in a scatter way. As the dispersal scope-
was relatively large, this study applied mode in the statistics
analysis. After a few days again adjustment, then formed a new
time of sleep habit. Observation found that after the fifth day,
although there was no regulation to sleep time, but, most of the
participants dozed near the new sleep time, at most in 26 min-
utes after this time point all fell asleep. Thus a migration from
the original sleep habit time to a new sleep habit time of the
main sleep is finished. Four weeks’ tests are so. Thus it can be
deduced that sleep habit time can migrate in 24 hours.
Observation of “habitual time point reaction”.
During the observation of sleep status, this study found that
the reaction of participants were strong when it was close to last
habitual time point to get up in the first day, almost in an am-
plitude of 30 minutes when it was close to the original get-up
time point. All participants appeared different degree of para-
doxical sleep, even awakening reaction. Some repeated keel
over, snoring stopped, and some woke up to drink water or go
to the toilet. Some even couldn’t sleep after waking for half an
hour. The phenomenon appeared after the adjustment of the
sleeping time, and people still get used to reacting at the origin-
nal period of time. In this study, we called this phenomenon the
habitual time point reaction. In fact, it is much more compli-
cated than the paradoxical sleep. After the second day, this kind
of phenomenon appeared directional dispersion, and was
gradually close to the new regulation time point of getting up.
The observation of primary sleep awake.
The subjects were woken after sleeping 7 hours from 1st -
4th day. The subjects were woken from the passive state. Sleep
was interrupted because of the effect of “habits time point reac-
tion” which appeared in early time. If going on sleep, the sub-
jects would soon fall into the slow wave sleep. When primary
sleep reached 7 hours, almost all of the subjects could not wake
up by themselves, they needed to be woken up forcibly. Sub-
jects generally felt tired and fatigue lethargy after waking up in
first two days and all day would feel dippy. Symptoms gradu-
ally reduced after the third day. Without waking up them after
5th day, and observe the naturally waking time of the subjects.
It could be observed that the majority of subjects naturally
woke up at magnitude of 40 minutes to the wake-up time of the
first four days.
The observation of secondary sleep.
Because of the short secondary sleep time, its corresponding
changes are less. It is mainly reflected in:
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