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Dj Vu Demystified: A Research Attempt to Provide a Concise Data about Dj vu
At some point in our lives, there comes an instance, be it a fleeting or a recurring one,
wherein we find ourselves saying Ive been here before, or thinking I feel like this isnt my
first time doing or experiencing this. And we are given a French term to call that unique feeling
we have - dj vu, which literally means "already seen." This dj vu experience is defined as
any subjectively inappropriate impression of familiarity of a present experience with an
undefinedpast (Neppe, 1983).
As popular as it may be in our popular culture through movies, books, songs and other
media, we often question the validity of our experience for the lack of proof or explanation we
can offer to other people. But the fact is, this concept of dj vu has a long history and is being
continually researched on to identify its scientific reasoning through surveys and laboratory
experiments.
A brief history of dj vu
There doesnt seem to be much awareness in the phenomenon, historically, until the early
part of the 1800s, except for St Augustines (354 - 430 AD) argument on his book On the
Trinity (Chapter XV, Book XII), which if analyzed, it could be considered as the earliest
reference to dj vu. The belief by St. Augustine that dj vu might be caused by outside
agencies will reappear in Frederic William Henry Myerss, one of the founding members of the
British Society for Psychical Research, two-part, book length article on what he called The
Subliminal Mind (1895) where he stated: I ascribe some precognitions to the reasoned
foresight of disembodied spirits, just as I ascribe some retrocognitions to their surviving
memory" (p. 340).
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A novel entitled Guy Mannering or the Astrologer (1815) by Sir Walter Scott will be
another earliest account that talks about dj vu experiences again, 1500 years since St.
Augustine. And though only published in 1840, the English poet Percy Bysshe Shelley seemed to
be among the firsts to see an obvious connection between his dj vu experiences and his prior
dreams as shown in his prose notes with the heading Catalogue of the Phenomena of Dreams, as
Connecting Sleeping and Waking.
Charles Dickens David Copperfield (1850) book passage: "We have all some
experience of a feeling, that comes over us occasionally, of what we are saying and doing having
been said and done before. in a remote time -- of our having been surrounded, dim ages ago, by
the same faces, objects, and circumstances -- of our knowing perfectly what will be said next, as
if we suddenly remembered it" (chap 39), is perhaps the most often cited in the dj vu literature
before it turned to a more scientific topic, among many other literature works.
The one who served as the bridge of dj vu to a more scientific thinking was Oliver
Wendell Holmes, an eminent Bostonian and Harvard Professor of Anatomy, when he published
his collection of thoughts entitled The Autocrat of the Breakfast Table (1858). But the earliest
published medical-scientific thinking on dj vu was Sir Arthur Wigans The Duality of the
Mind (1844)wherein he mentioned how he experienced dj vu when he attended the wake of
Princess Charlotte of Windsor in 1817.
From Sir Wigans experience, he concluded that dj vu only happens when someone isexhausted, making one hemisphere of the brain more or less inattentive or even asleep. Then
when it is awaken by something, the active hemisphere has already acknowledged the situation
while the other only digests its information after it. And since we dont have anything to base
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how much time has passed, that time interval may seem to have been many years (p. 85). His
book is actually surprising as to how he has predicted some of the most recent areas of
neurological studies.
Terminology
The term dj vu was first used in the scientific literature by mile Boirac, in his letter
published in Revue Philosophique (1876) wherein he mentioned le sentiment du dj vu,
describing his experiences and categorized them as a type of illusionary memory though his used
of the term was forgotten.
During the meeting of Societe Medico-Psychologique in 1895, Dr. M. Arnaud, a French
psychiatrist, officially proposed the term dj vu and objected that false recognition, false
memory, paramnesia and reminiscence were very extensive terminologies. Dr. Arnaud believed
that as dj vu means already seen it fitted more the phenomenon as it was experienced and is
more neutral in theory. A number of authors took this suggestion and the term was taken over in
popular jargon since it was short and straight to the point unlike dj vcu (already lived), as a
number of writers have wanted and would perhaps have been more precise, but it never became
famous.
Studies on dj vu
Though this dj vu phenomenon has now more than fifty different interpretations
(Brown, 2003, 2004), a strong and reliable explanations has yet to be done. Over these past
years, many scientists disregarded dj vu due to its constant association with past life
experiences, ESP, alien abductions and religion beliefs which gave the study of dj vu a bit of a
stigma. So now the question is why has the scientific study of dj vu remained so vague?
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According to Alan Brown (2004), two things are required to make a clear scientific
statement on any psychological phenomenon: a likely cause, and an observable behavior. And
too bad dj vu experience lacks both. A person can tell when it begins and how long it lasts, but
hardly has an idea about what caused it, and when you look at other people, you dont know if
theyre having a dj vu like you. Even the person experiencing himself the phenomenon will
have a hard time describing it.
Other seemingly odd things associated with dj vu also make scientists avoid this, as
stated previously, people feel that the events happening during a dj vu felt like have been
dreamt. And some claims a sense of precognition during dj vu, they know what will happen or
what will be said next by someone.
The theoretical foundation of dj vu research is another obstacle to its scientific scrutiny
since the experience was considered as a sign of pathology, rather than a routine memory glitch.
This past century dj vu was taken as seizure activity in the brain, specifically associated with
temporal lobe epilepsy (Crichton-Browne, 1895; Jackson, 1888). It has also been viewed as a
recognition disturbance linked with schizophrenia and other types of severe mental instability
(e.g. Harriman, 1947).
Two decades ago, if asked Is it possible to have a scientific study on dj vu? the
answer would have been No.But thanks to technological and research frontiers in the areas of
brain science and cognition, understanding the possible mechanisms underlying this memoryglitch is being continuously made.
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Brain malfunctions
An extensive research effort has been directed at determining if the dj vuexperience is
symptomatic of epilepsy(Brown, 2004). These investigations were stimulated by the presence of
dj vu in the pre-seizure aura of some temporal lobe epileptics. Although precisely locating
where the dj vu experience originates in the brain is clearly difficult, much of the evidence
gathered from patients who experience dj vu associated with epilepsy and brain tumors
suggests that the experience probably originates in the hippocampus and parahippocampal area
in the right hemisphere (Brown, 2004).
Another brain dysfunction that could possibly lead to dj vu involves a brief disruption
in the normal course of neural information transmission. Information is usually transmitted from
our sense organsto the higher brain centres in a rapid and dependably regular manner. Suppose
that a very brief delay occurs along one of these neural chains a slight disruption at one
juncture (synapse) between neurons. Our brain is accustomed to a precise rhythm in its circuitry,
and any disturbance gets its attention. When we trip over a rock, we immediately refocus our
attention on the act of walking.
Similarly, a slight neural hiccup changes our level of awareness, and we misinterpret this
as familiarity. The brain usually merges these separate neural messages, but a small temporal gap
creates the illusion of two separate experiences leading to dj vu.
Perhaps this temporal gap interpretation also explains the sense of precognition that
occasionally accompanies dj vu (see above vignette). If one focuses on the lagging message,
there is the feeling that this has happened before (dj vu). But if one focus on the leading
message, it elicits a sense of I know what will happen next (precognition) . Switching between
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the two messages could cause dj vu and precognition to alternate with each other during the
few fleeting moments of the experience.
How can we test some of these ideas? Recent advances in brain imaging and electrical
brain recording techniques may soon allow us to track small changes in the electrochemical
activity of very specific parts of the brain. Technology also is available to present visual and
auditory perceptual information asynchronously to each hemisphere, which could enable an
experimental laboratory analogue of the neural delay theory of dj vu (cf. Brown, 2004).
Memory-based theories
A second hypothesis involves another brain error; this time, the problem is with ourmemory, says Anne Cleary, a cognitive psychology professor at Colorado State University.
Something about a new situation or setting activates a memory of a similar past experience, but
our brains fail to recall it. Cleary offers this scenario to help explain: Imagine youre visiting
Paris for the first time, and you have arrived at the Louvre. Your gaze lands on the giant glass
pyramidjutting out of the museums main courtyard, and you get that strange feeling.
At that moment, your brain is failing to retrieve a memory that could explain it away: A
few months ago, you watched The Da Vinci Code, a film that provides an up-close look at the
Louvre Pyramid. In the absence of recalling that specific experience, Cleary says. Youre left
only with this feeling of familiarity with the current situation.
Cleary suspected that this sense of familiarity results from our ability to remember the
spatial configuration of surroundings. To test this hypothesis, she set out to induce dj vu in a
laboratory setting (PDF). Using the life simulation game The Sims, Cleary and her team built
two scenes, different in their features but identical in their layout. The first was a courtyard
setting featuring a potted tree in the center, encircled by various plants, and hanging plant
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baskets on the walls. The second was a museum setting that swapped the tree for a large statue,
the floor plants with rugs and the hanging baskets with sconces.
When participants explored the second room, they reported experiencing a feeling of dj
vu, but they couldnt connect that to their time spent navigating the first room. People do have
an increased sense of dj vu when the scene has a similar layout, but theyre failing to recall the
source of that familiarity, Cleary says.
Yet another possible explanation for dj vu, says Cleary, dates back to 1928, when
psychology Edward Titchener described the sensation using the example of crossing a street. As
we begin to cross a street, we instinctively look to the left, but if something catches our attentionon our right, we turn in that direction. By the time we look to our left again, our brains may have
forgotten the first glance. This second glance triggers a feeling of familiarity, because, in this
case, we really have seen something before.
In many cases, people who experience dj vu cant pinpoint why its happening. But for
what its worth, our brains are trying to tell us, Cleary says. Tip-of-the-tongue experiences work
in much the same way: for instance, we know that we know the name of that actor in that one
movie, but we cant pull it to the front of our minds. When retrieval does fail, our memories still
have a way of alerting us to the fact that theres something relevant in there, she says. Theres
something there that maybe we want to keep searching for.
Dj vu and psychological disorders
Early researchers tried to establish a link between dj vu and serious mental disorders
such as schizophrenia, anxiety, and dissociative identity disorder, but failed to find the
experience of some diagnostic value. There does not seem to be a special association between
dj vu and schizophrenia or other psychiatric conditions. The strongest pathological association
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of dj vu is with temporal lobe epilepsy. This correlation has led some researchers to speculate
that the experience of dj vu is possibly a neurological anomaly related to improper electrical
discharge in the brain. As most people suffer a mild (i.e. non-pathological) epileptic episode
regularly (e.g. a hypnagogic jerk, the sudden "jolt" that frequently, but not always, occurs just
prior to falling asleep), it is conjectured that a similar (mild) neurological aberration occurs in the
experience of dj vu, resulting in an erroneous sensation of memory. Scientists have even
looked into genetics when considering dj vu. Although there is not currently a gene associated
with dj vu, the LGII gene on chromosome 10 is being studied for a possible link. Certain forms
of the gene are associated with a mild form of epilepsy and, though by no means a certainty, djvu occurs often enough during seizures that researchers have reason to suspect a link.
Drugs and deja vu
Certain drugs increase the chances of dj vu occurring in the user. Some pharmaceutical
drugs, when taken together, have also been implicated in the cause of dj vu. Taiminen and
Jskelinen (2001) reported the case of an otherwise healthy male who started experiencing
intense and recurrent sensations of dj vu upon taking the drugs amantadine and
phenylpropanolamine together to relieve flu symptoms. He found the experience so interesting
that he completed the full course of his treatment and reported it to the psychologists to write up
as a case study. Due to the dopaminergic action of the drugs and previous findings from
electrode stimulation of the brain (e.g. Bancaud, Brunet-Bourgin, Chauvel, & Halgren, 1994),
Taiminen and Jskelinen speculate that dj vu occurs as a result of hyperdopaminergic action
in the mesial temporal areas of the brain.
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Divided attention (the cell phone theory)
Dr. Alan Brown has attempted to recreate a process that he thinks is similar to dj vu. In
studies at Duke University and SMU, he and colleague Elizabeth Marsh put the idea of
subliminal suggestion to the test. They showed photographs of various locations to a group of
students, with the plan to ask them which locations were familiar. Prior to showing them some of
the photographs, however, they flashed the photos onto the screen at subliminal speeds -- around
10 to 20 milliseconds -- which is long enough for the brain to register the photo but not long
enough for the student to be consciously aware of it. In these experiments, the images that had
been shown subliminally were familiar at a much higher rate than those that were not -- eventhough those students who had actually been to those locations had been pulled from the study.
Larry Jacoby and Kevin Whitehouse of Washington University did similar studies using lists of
words with similar results using lists of words.
Based on this idea, Alan Brown proposed what he calls the cell phone theory (or divided
attention). This means that when we are distracted with something else, we subliminally take in
what's around us but may not truly register it consciously. Then, when we are able to focus on
what we are doing, those surroundings appear to already be familiar to us even when they
shouldn't be.
With this in mind, it is reasonable to see how we might walk into a house for the first
time, perhaps while talking to our host, and experience dj vu. It would work like this: before
we've actually looked at the room, our brains have processed it visually and/or by smell or
sound, so that when we actually look at it we get a feeling that we've been there before.
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Other theories on dj vu
Some researchers also report that the more tired or stressed you are, the more likely you
are to experience dj vu. Other researchers, however, have seen just the opposite. They report
that the more refreshed and relaxed you are, the more likely you are to experience dj vu.
Obviously, the jury is still out about a lot of things related to dj vu.
One reported finding is that the more open-minded or politically liberal a person is, the
more likely they are to experience dj vu. However, this may also mean that the more open-
minded you are, the more likely you are to talk about something potentially seen as "weird," like
dj vu.
The hologram theory
Dutch psychiatrist Hermon Sno proposed the idea that memories are like holograms,
meaning that you can recreate the entire three-dimensional image from any fragment of the
whole. The smaller the fragment, however, the fuzzier the ultimate picture. Dj vu, he says,
happens when some detail in the environment we are currently in (a sight, sound, smell, et
cetera) is similar to some remnant of a memory of our past and our brain recreates an entire
scene from that fragment.
Other researchers also agree that some small piece of familiarity may be the seed that
creates the dj vu feeling. For example, you might go for a ride with a friend in an old 1964
Plymouth and have a strong dj vu experience without actually remembering (or even being
aware of the fact) that your grandfather had the same type of car and you're actually
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remembering riding in that car as a small child. Things like the smell and the look and feel of the
seat or dashboard can bring back memories you didn't even know you had.
Dual processing (or delayed vision)
Another theory is based on the way our brain processes new information and how it
stores long- and short-term memories. Robert Efron tested an idea at the Veterans Hospital in
Boston in 1963 that stands as a valid theory today. He proposed that a delayed neurological
response causes dj vu. Because information enters the processing centers of the brain via more
than one path, it is possible that occasionally that blending of information might not synchronize
correctly.
Efron found that the temporal lobe of the brain's left hemisphere is responsible for sorting
incoming information. He also found that the temporal lobe receives this incoming information
twice with a slight (milliseconds-long) delay between transmissions -- once directly and once
again after its detour through the right hemisphere of the brain. If that second transmission is
delayed slightly longer, then the brain might put the wrong timestamp on that bit of information
and register it as a previous memory because it had already been processed. That could explain
the sudden sense of familiarity.
"Memories" from other sources
This theory proposes that we have many stored memories that come from many aspects
of our lives, including not only our own experiences but also movies, pictures we've seen and
books we've read. We can have very strong memories of things we've read about or seen without
actually experiencing, and over time, these memories may be pushed back in our minds. When in
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we see or experience something that is very similar to one of those memories, we might
experience a feeling of dj vu.
For example, as a child we may have seen a movie that had a scene in a famous
restaurant or at a famous landmark. Then, as an adult, we visit the same location without
remembering the movie, and the location appears to be very familiar to us.
Types of dj vu
Defining types of dj vu is a very slippery area. Those who have studied it have applied
their own categories and differentiations -- each usually tied to a specific theory about what
causes dj vu. Alan Brown, a professor of psychology at South Methodist University and author
of "The Dj Vu Experience: Essays in Cognitive Psychology," has three categories for dj vu.
He believes there is dj vu caused by biological dysfunction (e.g., epilepsy), implicit familiarity
and divided perception. In 1983, Dr. Vernon Neppe, Director of the Pacific Neuropsychiatric
Institute in Seattle, proposed four subcategories of dj vu, including epileptic, subjective
paranormal, schizophrenic and associative.
Taking a very broad look at the research and resources available, we can put dj vu
experiences into two categories and then see the more subtle distinctions that researchers have
placed on it:
Associative dj vu. The most common type of dj vu experienced by normal, healthy
people is associative in nature. You see, hear, smell or otherwise experience something that stirs
a feeling that you associate with something you've seen, heard, smelled or experienced before.
Many researchers think that this type of dj vu is a memory-based experience and assume that
the memory centers of the brain are responsible for it.
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Biological dj vu. There are also high occurrences of dj vu among people with
temporal lobe epilepsy. Just before having a seizure they often experience a strong feeling of
dj vu. This has given researchers a slightly more reliable way of studying dj vu, and they've
been able to identify the areas of the brain where these types of dj vu signals originate.
However, some researchers say that this type of dj vu is distinctly different from typical dj
vu. The person experiencing it may truly believe they've been through the exact situation before,
rather than getting a feeling that quickly passes.
Below are names for some of the many ways in which the dj experience may manifest:
dj entendu - already heard
dj prouv - already experienced
dj fait - already done
dj pens - already thought
dj racont - already recounted
dj senti - already felt, smelt
dj su - already known (intellectually)
dj trouv - already found (met)
dj vcu - already lived
dj voulu - already desired
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Neppe (in conjunction with Prof. B. G. Rogers, Professor of French, University of the
Witwatersrand) in 1981 suggested the following additional terms:
dj arriv - already happened
dj connu - already known (personal knowing)
dj dit - already said/spoken (content of speech)
dj gout - already tasted
dj lu - already read
dj parl - already spoken (act of speech)
dj pressenti - already sensed
dj rencontr - already met
dj rv - already dreamt
dj visit - already visited
Dj rencontr appears preferable to dj trouv for the already met experience because it
specifically relates to interpersonal situations
Methodology
With that knowledge on dj vu in mind, the researcher conducted a small and limited
interview and survey of peoples understanding and experience of dj vu which will later on be
analyzed in terms of the existing researchers regarding dj vu.
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The interview was done on the researchers selected family and friends asking them their
basic understanding of dj vu, and their beliefs of the causes behind it. While the survey was
designed after the online survey provided by Dr. Art Funkhouser, was modified and was
conducted online to ten participants only.
Results and discussion
The following were the questions asked during the interview, with the participants
answers:
Question #1 Are youfamiliar withdj vu?
Have youexperiencedit?
What are your general experiences with it?
Participant 1 Yes. Yes. Napanaginipan ko na bago pa man mangyari to. . .Parang narinig o nakita ko na ito.
Participant 2 Yes. Yes. Pamilyar sa kin ang isang lugar kahit hindi ko panapuntahanAlam ko na kung anong susunod namangyayari. Tipong kilala ko na yung isang taongbaong kilala pa lang . . .
Participant 3 No. No. Wala talaga akong maalala eh.
Participant 4 Not sure. Maybe. Baka gusto akong kausapin ng isang multo, o alien,o ng Diyos. Parang premonisyon, ang galing. Saprobinsya kasi kapag ganyan baka babala rin yan.
Participant 5 Yes. Yes. Parang nangyari na kahit hindi pa, parangnapuntahan ko na, narinig, nabasa, nakilala kahit firsttime ko lang talaga na-encounter.
Question 1 in the interview lets the participants tackle their own familiarity with dj vu
by letting them discuss their different experiences they consider as dj vu. The things they
mentioned are surprisingly under the different types of dj vu as stated earlier.
Question #2 What do you think are the causes/reasons behind dj vu?Participant 1 Yun nga. Kasi napanaginipan ko na.
Participant 2 Coincidence lang siguro.
Participant 3 Baka maling akala lang yan nung mga taong sabi naka-experience na ng dj vu.
Participant 4 Milagro. Diyos lang angmay-alam. Kailangang manalig na lang tayo at magdasal.
Participant 5 Baka nakalimutan ko lang yung iba. Baka sabog lang utak ko nun. Sobrang pagod.Nagkataon lang.
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In question 2, their own theories on the reasons they think why dj vu happens were
discussed. References to dreams, fate, false memory, brain fatigue and even religion belief were
mentioned. Though not all of these are considered scientific, these are still included under the
theories linked with dj vu, as stated earlier in the paper.
For the survey, here are the results of the different set of questions asked to the
participants, but this time their identity was not asked:
Have you ever experienced dj vu?
Yes No Not Sure
7 2 1
Table 1. Familiarity with deja vu
Out of the ten participants, two have not experienced it, which means that they did not
have to answer the next questions.
You've mainly experienced ...
Dj visit (already been to a place - "been
there")
6
Dj vcu (already lived through or experienced) 4
Dj entendu (already heard) 4
Dj gut (already tasted) 4
Dj connu (already known personally) 3
Dj dit (already said) 3
Dj prsenti (had a presentiment)
Dj rv (already dreamt) 6
Some other form of dj experience 1
Table 2. Types of deja vu
Here they were asked to check all that apply with the results showing that dj visit
(been there) and dj rv (already dreamt) were the most common types of dj vu
garnering six occurrences over the eight participants.
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Frequency Have you ever had an experience in whichyou recognized that something which wasjust happening had also happened beforebut, at the same time, you also knew thatthis was not possible (dj vcu)?
Have you ever gone to a newplace but were able to recognizeit like you had been there beforebut, at the same time, you knewthat this was not possible (djvisite)?
Never 3 3
Just Once 1 1
More than Once 4 4
Table 3. Two initial questions leading to the questionnaire
The researcher decided to include asking the two most common types of deje vu
experience. As the results showed, half of the participants have at least experienced it more than
once. Though three out of eight answered they have never experienced both, which may implythat they have experienced other types of dj vu (as checked with their answers in table 2).
These two questions are important aspect for the subsequent set of questions.
How frequently did you have theseexperiences?
daily 0
a few times aweek
0
weekly 1monthly 1
rarely in a year 6
Table 4. Frequency of dj vu experience
How often the participants experience dj vu showed that majority have it rarely in a
year, implying that this phenomenon is indeed an elusive one, supported by their next answers.
What was the
shortest span oftime thisoccurred?
What would you
estimate was atypical span oftime?
What was the
longest span oftime thisoccurred?
a fleeting instant 2 3 2
a few seconds 4 0 0
several seconds 1 3 1
a minute to fewminutes
02 4
more than a few 1 0 0
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more minutes butless than an hour
an hour or more 0 0 0
Table 5. Length of dj vu experience
Table 5 shows the length the participants experience dj vu which the shortest is a few
seconds, longest is a minute to few minutes with a typical time span of a fleeting instant to
several seconds. This supports the studies that aside from being elusive, dj vu is short-lived
making it hard for memory retention or recall and validity whether its really happened or not.
How old were you when you hadthe first such experience?(estimate)
before attendingprimary school
0
duringelementary
2
during highschool 2
during college 1
can't remember 3
Table 6. Age of first dj vu experience
The first experience of dj vu of the participants is hard to determine as shown in the
table since they cant really remember it or may not be aware that what they have experienced is
considered as dj vu.
Table 7. Retained memory of dj vu experience
Though as shown in table 5 (length of dj vu experience happens so fast and within a
short period of time only), the participants claimed that they can remember very clearly to
somewhat clear their dj vu experiences rather than vaguely.
How well can you remember whathappened during the experience?
very clearly 4
somewhat clear 4
vaguely 0
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How do suchexperiences typicallybegin?
How do suchexperiences typicallyend?
suddenly 3 1
gradually 4 5
I don't remember 1 2
Table 8. Occurrence speed of dj vu
How fast or slow the phenomenon occurs and ends to the participants are majorly
gradual. This may be due to the processing that takes place within the brain, whether it accepts or
rejects the phenomena, weighing and eliminating what is acceptable and what is not.
How would you describe your typical state ofalertness during such experiences?
hyperalert 2normal consciousness 6
my mind was dull 0
Table 9. Mental state during dj vu
Table 9 shows that the participants have normal consciousness when they are undergoing
the dj vu experience with 6 of them claiming this, while only 2 claimed to be hyperalert and
none was having a passive mental state.
Has there been any change in the frequency of these experiences?
they have just started happening to me 1
they now occur more often 0
there has been no change in how often they occur 3
they happen less often now 3
they seem to have stopped happening 1
Table 10. Changes in frequency of dj vu experience
This can be correlated to table 4 (Frequency of dj vu experience) which has a result of
the participants experiencing it rarely within a year and here it is a tie between that frequency
being the same and it becoming more rarely as of the moment.
How much of the situation you were in wasincluded in your experience?
all of it 0
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most of it 5
only a few details 2
I don't remember 1
Table 11. Similarity of dj vu experience with prior memory
This part tries to determine the accuracy of their dj vu experience with their
preconceived memory of it and it shows that the participants consider that most of it are the
same with each other. This implies their sureness with their experience to be labeled under
dj vu.
How well did your "memory" of the situation tallywith what actually took place?
precisely (inevery detail)
0
to a large extent 2
to some extent 4
only a few details 1
i don't remember 1
Table 12. Retained memory of dj vu experience version 2
This retelling of the question presented in table 11 to somewhat achieve a sense of
validity in the participants answers and this creates a conflict with the previous generalization
since here they claimed that their preconceived memory of the dj vu experience is only up to
some extent.
Did you ever have the impression that you knew in advance what was goingto happen before it took place in such an experience?
yes 8
no 0
I don't remember 0
Table 13. Dj vcu (already lived through or experienced)
Table 13 tries to test again the validity of the participants answers by rephrasing the
question asked in table 1 (familiarity with dj vu) and the expected result was 7 answering
yes and 1 in I dont remember since in table 1 7 answered yes and 1 answered not sure.
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But this is still considered valid since the series of questions asked after the first question in the
survey might have helped the participant reconfirm his statement of whether having experienced
dj vu or not.
How were the experiences for you?
Pleasant Unpleasant Frightening Reassuring Stunning
all 2 0 1 0 2
some 6 5 5 7 6
none 0 3 2 1 0
Table 14. Emotional feelings during dj vu experience
This part maybe considered as an extra scope, but not the main focus of the study, since
this tackles the different emotions the participants have felt during their dj vu experience.
Though it is still nice to know what kind of feelings dj vu makes when being experienced.
Do you have an explanation of howthis can occur?
no explanation ortheory
1
some glitch inbrain functioning
3
due to tirednessor fatigue
4
for somethingsimilar (seen orread about)
3
reincarnation 3
dreams 7
Table 15. Theory on dj vu experience
Table 15 gives a very good association of the survey to what the participants think the
reason/s behind their dj vu experience to the established (though still bound to be changed
academically speaking) theories on dj vu discussed at the earlier part of the paper. Though they
dont really have a prior knowledge of these theories, its a point to be taken that this part
supports the idea that psychology somewhat just needs common sense to explain things (this is
the researchers opinion only, no offense to all the psychologists and other people) . The table
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shows that dreams is the most popular theory believed by the participants. This supports the
results in table 2 (types of dj vu) which shows that dj rv (already dreamt) is the most
common type experienced by the participants. And since that is the most common type, they
linked the dreams as the mechanisms behind.
If you have an explanation or theory, how certain are you that it is true?
very certain 1
somewhat certain 5
not certain at all 2
Table 16. Certainty on dj vu experience
This part tests the conviction of the participants on the theory they believed is the reason
behind dj vu. It shows a positive result of them being somewhat certain in it.
Conclusion
The researcher thinks that what matters in this research is not the quantity of participants
or the validity of the results of the interview and survey as a contribution to the academic study
of dj vu, but the exposure and knowledge gained during the process. As discussed, even today
dj vu has no hard-rock scientific explanations to either debunk or support existing theories
on why it happens or is being experienced. The difficulty to operational this phenomenon
makes it hard for the professional scientists, what more for a mere student of a general course
in Psychology. The whole essence of things goes back to the reason why this whole study was
done, and that is for learning and unlocking a Psych mystery. The researcher would like to end
thisby saying this research has given a feel like a boss confidence after this was successfully
ended.
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References
Association for Psychological Science (2008, November 19). The Psychology Of Deja
Vu. ScienceDaily.Retrieved from http://www.sciencedaily.com
/releases/2008/11/081118122146.htm
Bancaud, J.; Brunet-Bourgin, F.; Chauvel, P.; Halgren, E. (1994). "Anatomical origin of
dj vu and vivid 'memories' in human temporal lobe epilepsy".Brain: a journal of
neurology 117 (1): 7190. doi:10.1093/brain/117.1.71.
Britt, R. R. (2006). Patients Suffer Dj Vu...Over and Over. Retrieved from
http://www.livescience.com/humanbiology/060130_deja_vu.html.
Brown, A.S. (2003). A review of the deja` vu experience. Psychological Bulletin, 129,
394413.
Brown, A. S. (2004). Getting to grips with dj vu. The Psychologist, 17(12), 694-6.
Brown, A. S. (2004). The dj vu illusion. Current Directions in Psychological
Science, 13(6), 256-259. Carey, B. (2010). Dj Vu: If It All Seems Familiar, There May Be a Reason.New
York Times.Retrieved from http://www.nytimes.com/2004/09/14/science/14deja.html.
Crichton-Browne, J. (1895).The Cavendish Lectureon dreamy mental states. The Lancet,
2, 15.
Cleary, A. M. (2008). Recognition memory, familiarity, and dj vu experiences. Current
Directions in Psychological Science, 17(5), 353-357.
Clearly, A.M., Ryals, A.J., & Nomi, J.S. (2009). Can dj vu result from similarity to a
prior experience? Support for the similarity hypothesis of dj vu. Psychonomic Bulletin
& Review, 16(6), 1082-108.
8/12/2019 Dj Vu Demystified
24/25
24
Cleary et al.; Brown, AS; Sawyer, BD; Nomi, JS; Ajoku, AC; Ryals, AJ (2012).
"Familiarity from the configuration of objects in 3-dimensional space and its relation to
dj vu: A virtual reality investigation". Consciousness and Cognition21(2): 969
975. doi:10.1016/j.concog.2011.12.010.
Funkhouser, A. (2004). Deja experience research. Retrieved from http://www.deja-
experience-research.org.
Funkhouser, A. (2004). Dj vu survey. Retrieved from http://silenroc.com/dejavu/.
Guedj, E., Aubert, S., McGonigal, A., Mundler, O., & Bartolomei, F. (2010). Dj-vu in
temporal lobe epilepsy: metabolic pattern of cortical involvement in patients with normal
brain MRI.Neuropsychologia, 48(7), 2174-2181.
Harriman, P.L. (1947). Dictionary of psychology. NewYork: Philosophical Library.
Jackson, J. (1888). On a particular variety of epilepsy (intellectual aura), one case with
symptoms of organic brain disease.Brain, 11,179207.
Kozovska, K. (2002). Does a split reality exist? Dj vu as a failure of the brain to put
'time stamps' on memories. Retrieved from
http://serendip.brynmawr.edu/bb/neuro/neuro02/web1/kkozovska.html.
Lewis, J.G. (2012) The neuroscience of dj vu. Retrieved from
http://www.psychologytoday.com/blog/brain-babble/201208/the-neuroscience-d-j-vu.
Neppe,V.M. (1983). The psychology of dj vu: Have I been here before? Johannesburg:
WitwatersrandUniversity Press.
Neppe Dj Vu Research and Theory. (2003).Pacific Neuropsychiatric Institute.
Retrieved from http://www.pni.org/books/deja_vu_info.html.
8/12/2019 Dj Vu Demystified
25/25
25
OConnor, A. R., & Moulin, C. J. (2010). Recognition without identification, erroneous
familiarity, and dj vu. Current psychiatry reports, 12(3), 165-173.
The Various Manifestations of Dj Vu Experience. (2003).Pacific Neuropsychiatric
Institue. Retrieved from http://www.pni.org/research/anomalous/deja/
deja_manifestations.html.
Titchener, E. B. (1928). A textbook of psychology. New York: Macmillan. Retrieved
from http://archive.org/details/textbookofpsycho00edwa.
Vignal, J. P., Maillard, L., McGonigal, A., & Chauvel, P. (2007). The dreamy state:
hallucinations of autobiographic memory evoked by temporal lobe stimulations and
seizures.Brain, 130(1), 88-99.