Zeo Sleep Data and the Ur-Patterns of Dream Content

Zeo Sleep Data and the Ur-Patterns of Dream Content by Kelly BulkeleySo far I’ve done word search analyses on 20 series of dreams from individuals and 9 sets of dreams from large groups of people, a total of more than 18,000 dream reports. It’s too early to say anything definite about the patterns that have emerged from this data. More reports need to be gathered from a wider variety of people, and more improvements need to be made in the SDDb word search template.

Still, a few basic patterns have appeared in nearly all the collections I’ve studied. I’m calling them ur-patterns because they seem to represent deep structural elements of dream content (ur- as in “original” or “primal”). That’s my general hypothesis, anyway, and each new set of dreams is another chance to test and refine it.

Here are the ur-patterns I’ve identified so far:

  1. Of the five senses, sight words are used most often, smell and taste the least.
  2. Of the five major emotions (fear, anger, sadness, confusion, happiness), fear words are used most often.
  3. Of all the categories of cognitive activity, speech words are used most often.
  4. Of the four natural elements, water words are used most often.
  5. Falling words are used more often than flying words.
  6. There are more references to family characters than animal characters, and more to animals than to fantastic beings.
  7. There are more references to friendliness than physical aggression.

Looking at the KB DJ 2009-2010 series with Zeo sleep data (available at google docs), a scan for these patterns finds good but not perfect evidence for each one.

Vision-related words are used more frequently across all the Zeo measurements, with smell and taste words almost entirely absent. Fear words are used more frequently than other emotion words. Speech words are the most used among the cognition categories, and water is the highest among the natural elements, though earth is a consistently high second. The usage of falling words is always higher than, or equal to, flying words.

The family > animals pattern > fantastic beings was not as clear-cut. Fantastic beings always had the lowest word usage, but animals were not always lower than family. When the names of the dreamer’s immediate family were added to the search for characters, the total frequency of family-related words rose higher than the usage of animal words in 15 of the 17 subgroups.

The friendliness > physical aggression pattern was not perfectly evident either. In part this is due to a “false positive” problem in the SDDb template. The word search category for physical aggression includes the word “bit,” which the dreamer used in almost 10% of all the reports as a term meaning “small amount,” not a physical bite. I’ll provide revised numbers once I’ve fixed this. For now, looking at how often the word “bit” is used in each Zeo subgroup, it appears the physical aggression frequencies will drop below the friendliness frequencies in most, but not all, subgroups.

In sum, the ur-patterns appear across virtually all the subgroups of Zeo sleep measurement. No matter what aspect of sleep was measured, the dream reports used the same basic frequencies of words in several major categories. High or low proportions of sleep did not correlate with any major change of dream content, at least at this level of analysis.

In future posts I’ll look at the few variations from these patterns (high physical aggression, animal, flying, and earth references) in relation to the dreamer’s waking life concerns, taking the possibility of metaphorical meaning into account.

I will also look at each of the five types of Zeo data and see if I can identify any particular variations that rise to the level of statistically significant correlation. If any such correlations emerge, they may guide us toward specific areas where a measurable aspect of sleep does interact with basic patterns of dream content.

 

Comparing Dream Content and Zeo Sleep Data

Comparing Dream Content and Zeo Sleep Data by Kelly BulkeleyAn advanced feature of the Sleep and Dream Database is the ability to analyze dream content using sleep stage measurements from the Zeo Sleep Manager as search constraints. So far, the SDDb has only one series with both dream reports and Zeo sleep data from the same nights (KB DJ 2009-2010). In coming months I will be pursuing new studies with other participants using a combination of dream journaling and the Zeo device. (If you’re interested in contributing to this research, please let me know!)

Using the word search template of the SDDb, I analyzed 135 dream reports with Zeo data in terms of total REM sleep, total light sleep, total deep sleep, total time awake during the night, and total ZQ (an aggregate number measuring overall sleep quality). For each of these five Zeo variables I divided the 135 reports into three or four subgroups of roughly equal number and average word length, then searched each subgroup to determine its frequency of using the seven word classes and forty word categories available in the SDDb.

At this very early stage of working with dream and Zeo data, my goal is to learn enough to be able to ask more refined questions in future research. The small size of these subgroups (28 the smallest, 52 the largest) means that the statistics are not definitive and surely include a fair amount of noise. The variation in average word length of the reports in each subset (105.53 the shortest, 142.49 the longest) is another reason to view these results cautiously. Some of the reports provide only a brief mention of sexual activity, omitting additional details for privacy reasons.  The KB DJ 2009-2010 series has 182 total dreams, but 47 of the reports do not have corresponding Zeo data.

If patterns in the sleep data do correlate with patterns in dream content, I suspect the effects are likely to appear at the extremes, at the high and low ends of each measurement scale. Unusual frequencies may be nothing more than random noise, but they may also be genuine signals of interaction between sleep physiology and dream content. I’m hoping to identify where these signals might be appearing in data.

The spreadsheet with all the results can be found on Google docs.

Over the next few weeks I’ll post some comments about these data and what I think they mean. For anyone who repeats the SDDb word searches I did on the KB DJ 2009-2010 series and finds an error in my spreadsheet, I’ll send you a free book!

 

 

High Zeo Scores, Big Dreams

High Zeo Scores, Big Dreams by Kelly BulkeleyThe week before Thanksgiving I went on a family vacation to Mexico, just as I did last year.  My two all-time highest Z scores have come from these vacations–123 on the second night of the trip last year, and 125 on the first night of the trip this year.  Both times I was in a big sleep rebound mode, having slept poorly the previous few nights before traveling.  Both times I was in a very dark room and had absolutely nothing to do when I woke up.  In the 15 months I’ve used the Zeo, these were the most predictably opportune times for a maximal amount of sleep.  I’m glad to see the Zeo technology is capable of accurately representing the distinctive features of these kinds of unusual sleep experiences. 

My next highest Z scores came the two nights afterwards in both cases–116 and 116 following the 123 last year, and 116 and 115 following the 125 this year.  That third night this year, with the 115 Z score, I woke up from a very intense and elaborate dream.  I immediately looked at the Zeo clock–it was 3:33 am, which struck me as an odd bit of symmetry. 

I’ve transcribed the dream below.  It’s one of the longest I’ve had in quite a while.  Over the years I’ve had a few dreams similar to this, with an epic cinematic feel and lots of reality/perspective shifting.   My phobia about New York City is on full display here! 

Looking at my Zeo sleep graph for that night, I see that entered a REM phase at 2:25 am that lasted until 3:20 am.  Then I entered a brief period of deep sleep until 3:25 am.  After another bit of REM sleep at 3:30 am I was awake by 3:35 am.

I’m usually done with my deep sleep by midnight or 1 am, so it’s unusual to see the 3:25 am deep sleep.  Since dreaming is usually associated with REM sleep and stage 2 NREM sleep (part of light sleep for Zeo purposes), I wonder if  a) my dream came during the long REM phase ending at 3:20 am, or b) it was all condensed into the short REM phase at 3:30 am, or c) I started dreaming during the long REM phase and kept dreaming through the dip into deep sleep, back into REM and then awakening at 3:33. 

If it were true that the dream continued from REM through the deep sleep phase and back into REM, perhaps that might be related to some of the dramatic shifts and metamorphoses appearing at various points in the dream narrative.

Trying to Escape in New York City

I’m in New York City, walking down a street crowded with people….I go into a weird alley area….fences and garbage and strange people….I see a guy hunched up behind a garbage can in the shadows….I try to get back to the regular street, but to do so I have to climb through a hole in the fence, then try climbing up and over another fence….it has barbed wire at the top, so I’m stuck….as I try to do all this, I get in worse trouble, the bad guys see me caught up….Then I go to an inside place where the top bad guy is sitting at a table….there’s no way for me to escape….they’re laughing and talking, and I join in, but there’s a sense of menace in the air, I’m very scared….at one point one of the guys grabs at my balls, I jump back in alarm….they have total control over me….then cops come after the bad guys, and we all flee….it becomes an endless chase, with me trying to get away….but I can’t….at one point I find myself watching the filming of a Clint Eastwood movie about World War II, with planes swooping over a big canyon area and shooting at soldiers below….it’s like this place belongs to Mayor Bloomberg, he’s letting them use it for the movie?….Then I see Japanese guards with pick axes attacking people….they’re coming after me, too?….I run….at some point there’s a parade through the NY city streets….My friend E. is in the parade, he goes forward with the rest, with a big truck behind him….I keep running….we go inside buildings, and now I’m trying to help the bad guys; the cops are worse, they’re our mutual enemy….I could get away, but I’m part of the group now….it’s like we’re in a big department store….at one point we swing on elastic straps hanging down from the ceiling lights….we fly through the air, swinging around to get away….there’s a flashback to when the main guy lost his son to the cops?….that explains why he hates them so much….a few of us run down an escalator and hold it steady for the rest to come quickly, while I go ahead and find an emergency exit….but it turns out to be a weird orange or red room with people in it, like a party place….not an exit….so I go back out….I run through the garage of a fire fighters station, and think about taking their uniforms to disguise us….but no….then outside, we seem to have a moment where the cops don’t know where we are….I sit down at the table of a sidewalk cafe, with the top bad guy….other people just left the table, so we sit there as if we’re normal….the cops ignore us here…but the waiter knows the top bad guy….they’re lovers?….now the table is like a pool of water, and the top guy and I are floating in it….the waiter guy turns into a weird creature or machine, and he goes hunting/searching through the building for information to help us….At one point I drop my wallet, I see it back by a garbage can….I quickly dash down to get it before someone else grabs it….at another point I’m hiding behind a garbage can, just like the guy at the beginning….toward the end my wife is there, she’s skeptical and disapproving of all the mayhem and property damage that’s being caused….then it’s like the end of a movie….I miss the final credits, and I ask my daughter what the last line said….she says, “thus ends the tale of Don Quixote”….oh, I realize the whole thing has been an adaptation of the Don Quixote story….the main guy is Don Quixote, and some little guy is Sancho?….the end, which I’m watching rather than being in, involves the final destruction and death of all the bad guys from the cops, who are robots or machines now….no way to stop them, their dominance is inevitable….now the movie is over, we walk back through the rubble of the city….My mother-in-law is with us?….she and my daughter are walking fast ahead of us….I’m worried that we need to get out of here quickly, we’re in a weird city place that’s dark and filled with rubble, I don’t want to have trouble for real….

Dreaming with the Zeo Personal Sleep Coach

Dreaming with the Zeo Personal Sleep Coach by Kelly BulkeleySince August of 2009 I have been using the Zeo Personal Sleep Coach, a new consumer electronics device that allows you to monitor your sleep cycles at home.  It involves wearing a headband with a wireless sensor on your forehead that transmits data to a bedside clock while you sleep.  The Zeo system then calculates the length of your sleep and the contours of your sleep cycle, divided into four stages: waking, light sleep, deep sleep, and REM sleep.  Zeo has a website where you can upload your data and track the patterns over time. 

The motto of Zeo is “The more you know, the better you sleep.”  I was skeptical at first, as I assumed the headband would be uncomfortable and distracting.  Now, after 350+ nights of using the Zeo, I’m convinced it’s true.  I already slept pretty well before using the Zeo, but the information I get from it has made me much more sensitive to factors affecting my sleep, for good and for ill.  Zeo calculates a single number, the “Z Score,” to summarize the overall quality of your night’s sleep.  100 is the baseline and represents a good night’s sleep (calibrated according to your answers in the introductory survey).  A Z score below 100 is a less-than-optimum night’s sleep, and a Z score of 100 or more indicates an excellent night’s sleep.

My worst Z score is 68, the night after hosting a big party at our house.  My best Z score is 125, which came just last week on the first night of a vacation in Mexico.  I seem to average in the high 80s and low 90s during a regular week. 

During this same time period I have, as usual, been keeping a dream journal.  My goal has been to gather at least a year’s worth of Zeo and dream material to work with before trying to correlate the two sources of data.  On a parallel track, I’ve been developing a digital archive and search engine (the Sleep and Dream Database) to provide new analytic tools for engaging in this kind of comparative study. 

So I’m just about ready to address my primary question about the Zeo: Do the patterns of your sleep match up in any way with the patterns of your dreaming?



Dreams in A Midsummer Night’s Dream

Dreams in A Midsummer Night's Dream by Kelly BulkeleyA dream researcher friend asked if knew anything about the role of dreams in Shakespeare’s romantic comedy “A Midsummer Night’s Dream,” since she could not find any good info on the web.  Here’s my response, which she suggested I post:

One way to think of this play is as a commentary on the glorious folly of love.  Shakespeare is saying that love is like a dream—it radically changes our perception of reality and other people, it compels us to behave in ways that are foolish and irrational, it’s wild and magical and unpredictable, and it ultimately must yield to the sovereignty of the waking social order (as the end of the play makes clear).

After Bottom has returned from donkey to human status he says some funny things about how crazy and unbelievable dreams are, which is extra amusing and paradoxical because we in the audience have just seen that his “dream” of being an ass was indeed real (IV.ii.203-222).

One of the young lovers, Hermia, has an alarming dream about her beloved Lysander smiling cruelly while a serpent bites her breast (II.ii.144-150).  Her dream turns out to be an accurate “threat simulation” reflecting Lysander’s sudden change of heart towards her.

When all the lovers awaken toward the end, they marvel at their strange nocturnal experiences, and say some nice things about sharing dreams with each other (IV.ii.189-202).

Add to this the fact that the play was originally intended to be performed on midsummer’s night, traditionally a “dreamy” celebration of the shortest night of the year, when people stay up and carouse about till dawn.

And in the final lines of the play, the mischievous Puck asks the audience to pretend they’ve been asleep the whole time, dreaming the spectacle before them (V.i.429-430).

All in all, it’s a play that emphasizes the powerful emotional truth of dreaming and the energizing tension between dream desire and waking structure.

Thanks to Justina Lasley of the Institute for Dream Studies!

 

Sleep, Dreaming, and Human Health

Sleep, Dreaming, and Human Health by Kelly BulkeleyDominican University’s Albertus Magnus Society will present a lecture titled “Sleep, Dreaming, and Human Health” by Dr. Kelly Bulkeley, visiting scholar at the Graduate Theological Union in Berkeley, California, on Thursday, February 11 at 7:00 p.m. The lecture will be held in Priory Campus Room 263, 7200 W. Division Street, River Forest. The event is free and open to the public.

     Bulkeley will explain how sleep and dreaming are natural processes hard-wired into the human brain, as well as universal portals into religious experience and spiritual insight. He will describe current scientific research on the health benefits of sleep and the evolutionary functions of dreaming. He will integrate these findings with philosophical and religious teachings about the healing power of dreams.

     Established in 2006 by the Siena Center of Dominican University, the Albertus Magnus Society pursues new information and insight in a setting that is both scholarly and congenial, and reflects the Dominican understanding of the compatibility of religion and science. The society was named for Albertus Magnus, patron saint of scientists, and thirteenth century Dominican famed for scientific discoveries and a theology reflective of the emerging science of his day. For more information on the Albertus Magnus Society, please call (708) 714-9105 or visit the website at http://www.dom.edu/ams.