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DREAMS

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However, some people suffer from sleep disorders where those activities are not prevented. ... This is not due to anything paranormal or supernatural, ... – PowerPoint PPT presentation

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Title: DREAMS


1
DREAMS
  • Their
  • Meaning
  • And Role
  • In Our Life

by Dimitra Bella-Velidi Teacher Zafi Mandali
2
What Is A Dream?
A mental activity (thoughts, images, emotions)
occurring during sleep.
  • Dream

During a typical lifespan, a human spends a total
of about six years dreaming
about 2 hours each night
The contents and purpose of dreams are not fully
understood and they have been a topic of
discussion for many years. There is no
universally agreed definition of dreaming. It is
unknown where in the brain dreams originate, if
there is a single origin for dreams or what the
purpose of dreaming is for the body or mind.
3
Function Of Dreams
  • There are many hypotheses about the function of
    dreams.
  • Freud suggested that bad dreams let the brain
    learn to gain control over emotions resulting
    from distressing experiences.
  • Dreams also let the mind express things that
    would normally be suppressed in the real world
    and keeping itself in harmony.
  • Dreams may also allow a person to see some future
    events or prepare for them, for example a work
    presentation, a job interview, or a first date.

4
Function Of Dreams
  • Dreams may also create new ideas which are not
    real. Some of these may be rejected by the mind
    as useless, while others may be seen as valuable
    and remain.
  • Dreams may also change the mood. Hartmann says
    dreams may function like psychotherapy, by
    "making connections in a safe place" and allowing
    the dreamer to connect thoughts that may be
    irrelevant while the person is awake.
  • Recent research suggest that dreaming
    metaphorically completes patterns of emotional
    expectation and lowers stress levels.

5
REM and NREM
REM-sleep Most dreams occur in connection with
rapid eye movements, and are said to happen
during REM-sleep, during which there is a lot
brain activity to be most like that of a
sleepless person. The REM period takes up 20-25
of sleep time. Babies and little children are
believed to dream during about 50 of their sleep
time.
NREM-sleep Dreams occurring during non-REM
periods are said to happen during NREM-sleep.
Dreams during non-REM sleep are usually more
colorless in comparison.
6
The Stages Of Sleep
  • Sleep researchers divide up sleep time into
    stages, usually by seeing the brain waves into
    an electroencephalograph (EEG). The EEG records
    electrical activity in the brain by connecting
    some electrodes to the scalp.
  • Typically, a person will have four or five REM
    periods a night, each one lasting from 5 to 45
    minutes. There is some evidence, however, that
    REM-sleep happens before dreaming and that these
    two are completely different from each other.

7
The REM-Dream State
An EEG showing brainwaves during REM sleep
When a person is in deep sleep there is no
dreaming and the waves (called delta waves) come
at a high vibration about 3 per second.
  • The REM-dream state is a neurologically and
    physiologically active state. In this state the
    waves come at a rate of about 60-70 per second
    and the brain generates about five times as much
    electricity as when awake. Blood pressure, heart
    rate, breathing rate, etc. can change
    dramatically during REM-sleep. Since there is
    generally no external physical cause of these
    states, the stimuli must be internal, i.e., in
    the brain, or external and non-physical.

8
The Brain Activity During A Dream
  • Brain stem mechanisms protect us during sleep
    from activities that could have as a result
    self-injury or injury to others. That is, most of
    us are paralyzed during sleep. However, some
    people suffer from sleep disorders where those
    activities are not prevented. People who suffer
    from this disorder flail, sleepwalk, etc., and
    can be a danger to themselves or others. Such
    people often leave their beds during sleep.
  • Another curious quality of brain activity during
    dreaming is that almost all dreams are forgotten.
    We call this dream amnesia. This is not due to
    anything paranormal or supernatural, but to weak
    encoding.
  • Perhaps the most curious quality of dreams is
    that we most of the time are not aware that we
    are dreaming while we are dreaming. This may
    account for time distortion, lack of reflection
    on one's plight, and the amnesia that often
    follows waking.

9
Parapsychology vs. Science
  • Nowadays, hardly anyone believes that dreams are
    messages from the gods. But some
    parapsychologists, believe that dreams offer an
    opening to another universe.
  • Others have studied the subject of whether the
    mind is open to telepathic input during sleep and
    have failed to find evidence of psychic ability
    while dreaming. They seem to think that brain
    waves represent states of consciousness and that
    sleep is an altered state of consciousness.
    However, sleep is not a state of consciousness,
    but unconsciousness.

10
Parapsychology vs. Science
  • A lucid dream, also known as a conscious dream,
    is a dream in which the person is aware that
    he/she is dreaming while the dream is in
    progress. During lucid dreams, it is possible to
    gain control of the dream characters and
    environment, as well as to other impossible
    feats.
  • Lucid dreaming has been researched
    scientifically, and its existence is well
    established. Allan Hobson, with his
    neurophysiological approach, has helped to
    understand the lucid dream into a less
    complicated way.

11
Parapsychology vs. Science
  • The prophetic or clairvoyant dream is perhaps the
    strongest reason for believing that dreaming is a
    gateway to another world. Some dreams seem
    bizarre. They seem to foretell events.
  • If a significant number of dreams of just a
    single person corresponded to future events, this
    would be a great benefit to humankind and we
    should try to find out how does it work. However,
    no such person has been found yet.
  • However, most parapsychologists are not
    interested in the physiology of dreaming. They
    focus instead on the content of dreams, which
    they believe reveals a passage to the paranormal
    or the supernatural.

12
Nightmare
  • A nightmare is a dream which causes fear or
    horror, or the feelings of pain, falling,
    drowning or dying. Such dreams can be related to
    physical causes such as a high fever, or
    psychological ones such as psychological trauma
    or stress in that persons life. If a person has
    experienced a psychologically traumatic situation
    in life, for example, a person who may have been
    captured and tortured, the experience may come
    back to haunt them in their nightmares. Sleepers
    may stay awake and be unable to get back to sleep
    for some time.

13
Dream Interpretation
  • Dream interpretation is the process of giving
    a meaning to dreams. In many of the ancient
    societies, including Egypt and Greece, dreaming
    was considered a supernatural communication,
    whose message could be made clear by those with
    certain powers. In modern times, various schools
    of psychology have offered theories about the
    meaning of dreams.

success, values
If you want to learn more about dream
interpretation and what each thing symbolizes,
simply go to www.dreammoods.com
obedience
love, romance
14
Conclusion
  • Most dream themes, such as being chased or
    falling are said to have a connection with our
    hunter-gatherer days. We have these dreams
    because our ancestors were chased by
    sharp-toothed tigers and slept in trees. The
    evidence for such beliefs is minimum. If the
    dream-state is a gateway to anything, it is
    probably a gateway to personal fears and desires,
    rather than to ancient ones of other people. We
    assume dreaming has a purpose, but that purpose
    is more likely to be rooted in this life than in
    some other one.
  • It is most likely that dreams are a result of
    electrical energy stimulating memories located in
    various regions of the brain. Why does the brain
    keeps memories, remains a mystery, though there
    are several explanations. Explanations in terms
    of the paranormal and supernatural are not as
    likely to have a connection with those that limit
    themselves to biological and emotional mechanisms
    linked to brain activity.
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