More recent research has enabled the dream to be studied 'from within'
and has come up with some remarkable findings. The work centres on the
'lucid dream' - a somewhat rare type in most people - which is where you
become fully aware (while asleep and dreaming) that you are in fact in
a dream. It is like suddenly becoming conscious, but realising that you
are in a completely 'fake' dream world.
An early allusion to lucid dreaming was perhaps
made by Aristotle, in his work On Dreams :
'Often when one is asleep, there is something
in consciousness which declares that what then presents itself is but a
dream'.
However, up to only few decades ago there
was very little literature indeed regarding the topic. One interesting
publication (Les reves et les moyens de les diriger) from France in 1867,
was that by the Marquis Hervey de St Denys - a French aristocrat and oriental
scholar. He was a prolific dreamer of 'dreams in which I was conscious
of my true situation'. At one time he had such a dream each night.
St Denys kept meticulous notes and made numerous
coloured illustrations of his dreams. He found that dreams represent underlying
thoughts and that images are based on previous perceptions.
He also believed that ideas flow along associative
pathways. He gave an example of a dream concerning a bull-fight where a
fighter was mortally wounded. He next found himself in Normandy, where
he once saw an angry bull. Among the now peaceful scenery, though, lay
the body of the toreador.
St Denys conducted many experiments where
a servant introduced external stimulation into his dreams - a perfume,
a noise, and so on. He reported that certain illnesses seemed to be preceded
by specific dreams e.g. headaches followed dreams of climbing mountains.
He also noted that some drugs, such as morphine, produced stereotyped images.
One of St Denys' more elaborate experiments
further tested his theory of association in dreams. For two weeks, while
holidaying in Vivarais, he used a specific scent and discontinued its use
on his return. Some months later, a servant - who habitually entered his
bedroom at an early hour - sprinkled some of the same scent on his pillow.
The morning was randomly chosen by the servant. St Denys had a vivid dream
of being at Vivarais.
We can't be sure now of the scientific rigour
of the enterprising experiences of St Denys, but his detailed findings
need to be taken into account in any assessment of our knowledge of dreams.
The term 'lucid' dream was introduced by Dr
Frederik van Eeden, at a meeting of the Society for Psychical Research
in London, in 1913. He had kept records of some 250 lucid dreams and presented
his observations and ideas on the topic. To illustrate the high level of
consciousness in the lucid dream, and some of the strange features, van
Eeden related the following case :
'I dreamt that I stood at a table before a
window. On the table were different objects. I was perfectly well aware
that I was dreaming and I considered what sorts of experiments I could
make. I began by trying to break glass, by beating it with a stone. Yet
it would not break. Then I took a fine claret glass from the table and
struck it with my fist, with all my might, at the same time reflecting
how dangerous it would be to do this in waking life ; yet the glass remained
whole. But lo ! when I looked at it again after some time, it was broken.
It broke all right, but a little too late, like an actor who misses his
cue. This gave me as very curious impression of being in a fake world cleverly
imitated, but with small failures.'
In addition to possessing the astounding knowledge
that you are conscious yet in a dream environment, another amazing factor
is that you can actually control what happens - by mere thought. Essentially,
what you think then happens - so the dream can be steered to particular
situations, or specific people can be encountered (See part 4).
Lucidity is normally initiated when you observe
something that is blatantly incongruous within the dream scenery - perhaps
seeing someone you know to be dead.
Sleep laboratory research into lucid dreams
was pioneered by Dr Keith Hearne at Hull university in England. Hearne,
after having learned about lucid dreams from Celia Green's seminal book
Lucid Dreams, reasoned that it should be possible to communicate to the
world of wakefulness in some way. A great problem, though, was that the
body is paralysed during REM sleep so that no physical movements are possible.
However, Hearne one day remembered that the
eye musculature is not inhibited - after all, the state is called rapid-eye-movement
sleep. On a hunch, he wired up a volunteer subject, who reported having
fairly frequent lucid dreams, in the sleep laboratory with the instructions
that on becoming 'lucid' immediately to make a sequence of 8 extreme left-right
eye signals.
On the morning of 12th April 1975 at about
8am, while the subject was in indubitable stage REM (dreaming) sleep, a
series of left-right eye-movements was observed in the polygraphic record.
On waking, the subject described how, in the dream, he had been walking
about in the university when he suddenly became lucid, recalled the instructions
to signal, and signalled with his eyes.
Hearne has stated how "It was like getting
the first ever signals from another solar system. The very chart-record
showed that the subject was in a completely different state from wakefulness
(i.e. 'asleep', 'unconscious', and 'dreaming'), yet he was absolutely conscious
and aware of his situation. It was amazing, philosophically. Here was a
person in a total reality, which we call a dream, conveying information
to what to him was a dream world, which was my waking reality".
Hearne made the signalling discovery in the
sleep laboratory of Hull university and then established a sleep-laboratory
at Liverpool university. He informed American researchers at Chicago and
Stanford of his discovery. At Liverpool, he completed the world's first
PhD research into lucid dreams (submitted May, 1978).
Hearne found that although subjects dreamed
they were pressing a micro-switch at the same time as making eye signals,
because of the general bodily paralysis, no signals were produced on that
polygraphic trace.
In his extensive research, Hearne established
the basic characteristics of lucid dreams : they were genuine dreams occurring
in REM sleep (some had proposed that they were not dreams but a form of
hypnopompic imagery, experienced on waking in the night) ; their duration
was measurable ; signalled information showed that the dreams operated
in real time (i.e. they were not 'over in a flash').
He discovered the 'pre-lucid REM burst' -
a flurry of eye movement activity that invariably appears in the chart
record before lucidity happens. Its presence indicates that lucidity occurs
when cortical stimulation (parallelled by the REM bursts) reaches a critical
point.
Also, of course, the signalling technique
established, for the first time, a channel of communication from the dream
to the waking world. Even telepathy tests were conducted with subjects
in the lucid state.
Later work by Stephen La Berge, at Stanford university
in America confirmed Hearne's original findings.
Hearne also discovered an important consistent phenomenon
in dreams - the 'light switch effect. He asked a group of eight geographically
distanced lucid dreamers - who did not know each other, and had no communication
between one another - to report back on tasks given to them to perform
in the lucid dream state. None of the subjects could switch on a light
in the dram scenery.
The dream-producing process manoeuvred the
dream so that the light would not suddenly come on - the light-switches
had 'disappeared', or the bulbs only 'glowed dimly', or were 'fused'.
The effect is interesting because it
demonstrates that there are natural, physiologically determined limitations
within the dream producing process. Whatever the current level of 'brightness'
in a dream, if - using dream control techniques - the dreamer attempts
to increase that level rapidly, the system cannot cope and so has to deceive
the dreamer.
Hearne warns that there are probably many
other such limitations in the dream constructive system - so we must be
cautious about applying meanings to some dream elements which are fundamentally
not amenable to interpretation. Hearne's research is documented in detail
in his book The Dream Machine (1990).
A modern approach to dream interpretation
is that developed by the authors. Hearne & Melbourne have devised a
system that is pragmatic and an updated version of the Roman methodology,
which gets away from the simplistic and unsatisfactory 'dream dictionary'
method. The new technique is described in their book Dream interpretation
- the secret (Blandford Press, London, 1997).
Firstly, much necessary written background
information is collected by the dreamer filling in the MHQ or Melbourne
/ Hearne Questionnaire, about both the dream and the dreamer. The dream's
various elements are extracted and the dreamer lists any personal associations
to each of those elements.
From then on the procedure is best carried
out by someone else, who can look at the material objectively. The lists
of associations are cross referenced and, by a flow chart procedure, consistencies
are noted. The dream report is also inspected carefully for verbal puns,
anagrams, ambiguous words and phrases and so on. Eventually, the overall
metaphor of the message-bearing dream is revealed.