Dreaming as Play and as Mind-Wandering

The neuroscience of dreams has shifted in recent years toward the idea that dreaming can be conceived as a kind of mind-wandering in sleep. According to current evidence, mind-wandering (also known as day-dreaming, or drifting thought) is a product of the “default mode network,” a system of neural regions that remains active in the absence of external stimulus or focused thought. During sleep this same system of neural regions becomes active, helping to generate the experience of dreaming.

Two recent books by esteemed researchers make this argument about the connection between dreams and mind-wandering: When Brains Dream: Exploring the Science and Mystery of Sleep, by Antonio Zadra & Robert Stickgold, and The Emergence of Dreaming: Mind-Wandering, Embodied Simulation, and the Default Network, by G. William Domhoff. When scientists of the stature of Domhoff, Stickgold, and Zadra reach a common conclusion, it’s worth taking the idea very seriously.

Mind-Wandering and Play

However, the valuable implications of this idea remain obscure when expressed in research terminology. I suggest a more helpful framework is provided by the concept of play. Mind-wandering is, in this view, the mind at play. And dreaming is the play of the mind while asleep. Released from external demands and left to its own devices, whether awake or asleep, the mind becomes active in a more spontaneous, imaginative, emotionally variable, and freely associative mode. If this is not identical to mind-wandering, it at least shares so many core features with play that we should consider the benefits that come from further studying this connection.

The Play of Animals

There is a rich scientific literature on play behaviors in many animal species, all of which can provide dream researchers with valuable evidence, surprising insights, and a stronger grounding in the evolution of our own species. According to comparative zoologists, play in animals is centrally involved in learning and practicing survival-related skills, especially at the younger stages of life and especially for species who live in complex social groups. These features of play correlate very closely with prominent features of dreaming, not excluding the widespread occurrence of terrifying dreams of fear and vulnerability, which seem at first sight to be entirely unplayful. However, the most common form of play in the animal kingdom is play-fighting, which helps to account for the prevalence, and even value, of nightmares in healthy human development. Our fundamentally playful dreams include a great deal of the fighting kinds of play. Although distressing in the short-term, such dreams have the beneficial long-term effect of priming our waking awareness to be vigilant toward similar threats in the waking world.

The Science of Creativity

How does the mind generate novel ideas in art, science, technology, and daily life? Research on mind-wandering is clearly relevant to this important question, insofar as the creative process seems to depend on a moment of unforced openness to serendipity, to a flow of spontaneous images, feelings, and ideas emerging from the unconscious mind. These moments of openness to the unconscious regularly occur in dreaming while asleep, which is why dreams have always been considered a source of creative inspiration.  These moments also occur in playful activities while we are awake, alone or with others, when our focused attention is temporarily suspended and the curious explorations of the wandering mind can yield unexpected insights and discoveries.

Psychotherapeutic Dialogue

The connection between play, dreaming, and mind-wandering has practical relevance for clinicians and caregivers who work in play therapy, art therapy, or any therapeutic approach in which an open dialogue is part of the healing process. Sigmund Freud was one of the first to recognize the therapeutic value of “free association” as a technique of encouraging clients to say whatever spontaneously comes into their minds, as a way of eluding the critical judgment of consciousness and honestly expressing their unconscious feelings. Psychotherapy in this sense has the quality of shared mind-wandering. It creates a safe, playful space in which the clients can, with their therapist as a companion, freely explore questions and conflicts relating to important concerns in their life.

Philosophy

This might sound like more of a stretch, but research on mind-wandering, if slightly reconceived, can also help shift the philosophy of dreaming toward a deeper appreciation for what we experience during dreams. The concept of play is central to Friedrich Schiller’s On the Aesthetic Education of Man (1795), a key text for the early German Romantics which suggested that play enables us to achieve a higher union of the mutually opposing needs of our mind and body, intellect and desire, reason and sensation. “Man plays only when he is a man in the full sense of the word,” Schiller stated, “and he is only a complete man when he plays.” If dreaming is indeed a legitimate form of play, we can draw on the reflections of Schiller and his colleagues to affirm the philosophical significance of both dreaming at night and mind-wandering during the day as paths toward a more fully integrated and actualized sense of self.

 

Note: this post originally appeared in Psychology Today on July 30, 2024

The Ethical Challenges of Dream Video Technologies

New technologies are making it possible to use brain data to create video reconstructions of people’s dreams while they sleep. Is this thrilling, terrifying, or both?

Here’s how it works. Researchers are learning how to observe an individual’s brain while viewing a specific image (let’s say a cat) and how to identify neural patterns correlated with that image. Then the researchers observe the individual’s brain while sleeping, and watch for a recurrence of the “cat” neural pattern. If it appears, a signal can be sent to a video monitor to show an image of a cat—presumably what the sleeping person is dreaming about at that very moment.

Does this mean we will soon be able to sit in front of a “dream-viewer” (an iDreamer?) to watch videos of our own dreams, along with the dreams of other people?

Soon, probably no. But someday, possibly yes. Many technical challenges have to be overcome first. Lots of time and effort are required to train the computer algorithms to recognize the patterns of an individual’s brain. The patterns for “cat” from one person’s brain do not necessarily match the “cat” patterns from another person’s brain, so the system has to be trained and calibrated anew for each individual.  The nearly infinite variety of dream content magnifies the learning challenge for this kind of technology (how many images of different kinds/colors/sizes of cats need to be incorporated into the system?). Efforts to model the contents and experiential qualities of dreams have to find some way to reckon with a boundless, unpredictably varied set of data.

Advocates will emphasize the potential benefits if these methodological challenges can be overcome. Researchers would, for the first time, have “objective” dream data, unfiltered by the subjective biases and limited memories of the dreamer. For anyone who looks to dreams for personal insight and guidance, this technology offers a quantum leap in the depth and range of access to one’s dreaming experience. For example, psychotherapists would have a powerful new resource for understanding the unconscious conflicts, fears, and concerns of their clients.

All of these potentially positive applications sound appealing, of course. But no less time should be given to considering the potentially negative applications, too. Between now and the invention of a true “dream-viewer,” we should consider several ethical questions raised by this technology.

Does the process of training and calibrating the system disrupt the natural rhythms of people’s sleep and dreams? If yes, what are the long-term health risks and psychological dangers of that disruption? This basic question is too rarely asked in discussions of new dream technologies, perhaps because of an unspoken assumption that dreams themselves aren’t really “real,” so nothing that harms dreaming does any real harm to a person.

What is the source of the images used to reconstruct people’s dreams? Who chooses those images? Is there transparency in the algorithms that correlate specific images to specific neural patterns? Are measures taken to prevent biases from excluding the appearance of certain kinds of images and favoring others?

Does the technology distort and flatten the contents of people’s dreams? It seems likely a dream-viewer will be incapable of representing bizarre or anomalous experiences for which there are no images. It will struggle to represent essential elements of dreaming like feelings, thoughts, and bodily sensations. It won’t be able to convey non-imagistic qualities of intensity, atmosphere, or awareness. Jorge Luis Borges noted these qualities when he described a nightmare of an ancient King standing by his bed: “Retold, my dream is nothing; dreamt, it was terrible.” (Seven Nights, 1980) Will a dream-viewer ever be able to convey the ineffable terror in a nightmare like the one Borges experienced? It seems unlikely. Videos will show what videos show, not what dreams are in any full or objective sense.

Who gets access to the dream-viewers? What is done with this incredibly personal source of information? It takes little imagination to envision potential abuses of this technology for commercial, political, governmental, and/or criminal purposes. The prospect of bad actors gaining access to private details so secret even the individual does not consciously know them should be a red-flag concern for any technology that is openly offering an unfiltered view into people’s dreams.

Can this technology be re-engineered to manipulate the process and contents of dreaming itself? What if a tool designed to identify neural patterns associated with dreaming could be re-purposed to selectively target specific patterns either for suppression or stimulation? This seems to lead into Inception territory, making people vulnerable to an unprecedented depth of external control and manipulation.

How much dream awareness can people handle? An earlier and even more direct film reference to this kind of technology appears in Wim Wenders’ futuristic film Until the End of the World (1991), in which the equivalent of a dream-viewer has been invented. The CIA is determined to steal the device, which of course is not a fantastical idea at all. If and when a dream-viewer is created, CIA interrogators would surely be at the front of the line to get one. More unexpectedly, the characters in the movie who use the device become lost in the narcissistic labyrinths of their own fantasies. They detach from the rest of the world, retreating into a video womb of reconstructed dreaming. Here, the technology’s danger is not from abuse by others, but from our own abuse of it. We assume that more insight into our dreams is a good thing, but is that true for everyone? Do each of us have a healthy limit of dream awareness, beyond which we become lost in ourselves?

Final Thought

Dreaming is an innate function of the brain-mind during sleep. It is also an experience that humans from around the world and all through history have considered vitally important, meaningful, and useful in their waking lives. Any new technology that has the potential, whether intended or not, to disrupt the natural rhythms of people’s sleep and dreaming needs to be publicly evaluated in terms of its long-term risks and benefits.

Note: this post first appeared in Psychology Today, 6/8/21.

The Best Technology for Studying Dreams

It’s hard to beat the simple practice of keeping a dream journal.

Many exciting new tools are being developed to help us understand the nature and functions of our dreams. For example, researchers are developing technologies for generating a video “read-out” of a person’s dreams based on neural signals from the brain. They are devising methods to stimulate a sleeping person’s brain to instigate lucidity or consciousness during a dream, or even to prompt certain kinds of dream content.

However, none of these new technologies are as valuable for the study of dreams as one of the simplest tools available: the dream journal. A record of an individual’s dreams over time offers the most powerful tool we currently have for the study of dreams. Even compared to the most high-tech devices used by neuroscientists, the dream journal has big advantages in effectiveness, accessibility, and privacy.

Effectiveness

The new dream technologies mentioned above have very short track records. We still don’t know many details about their impact on brain functioning during sleep, nor do we know how the impact varies according to individual differences among people from across the demographic spectrum. And, all these tools rely on measurements of neural activity that have to be interpreted by the researchers and translated into meaningful mental content. That’s not an easy or purely objective process.

However, dream journals as a tool of studying and exploring dreams has a very long track record, going back many centuries (The Sacred Tales of Aelius Aristides in the 2nd century may be the oldest surviving example). We know from extensive psychological research that recording one’s dreams over time yields rich personal insights and self-knowledge. Psychologists have used dream journals starting with Freud’s own dreams in The Interpretation of Dreams, and continuing through Allan Hobson’s use of the “Engine Man’s” dreams in The Dreaming Brain, and now to the works of G. William Domhoff, Michael Schredl, and others who find that dream journals provide legitimate scientific insights into recurrent patterns of content. Only by tracking an individual’s dreams over time can these patterns be identified. Both for psychologists doing research and individuals seeking personal growth, the dream journal remains the most effective technology available.

Accessibility

The new dream technologies are generally used in hospitals or research laboratories. Some devices have been developed for home use, but they tend to be expensive and complicated to operate. Extensive training and preparation are required for the use of these tools, along with a sophisticated computer system and a reliable internet/electrical system. All of these factors have limited the accessibility of new dream technologies to a very small number of people.

The dream journal, by contrast, is available to virtually everyone. To keep a dream journal, you need no training or special preparation, and you don’t have to go to a laboratory or hospital. All that is required is a method of recording your dreams (e.g., by pen and paper, computer, voice-to-text), and a safe place to preserve them over time. This makes the dream journal by far the most accessible tool for studying dreams.

Privacy

Almost every type of new dream technology has connections to the internet that feed data from individual dreamer to the researchers and back again. Even if the researchers preserve the confidentiality of the individual’s data, which of course they should, the sheer presence of an outside observer peering into one’s dreaming experiences and reflections naturally heightens people’s concerns about personal privacy. Some of the new technologies, for example the dream-visualization tools and the dream-altering tools, clearly raise enormous ethical issues around protecting the privacy and integrity of one’s inner thoughts.

A dream journal has the advantage here of being a type of personal diary. Just as a diary provides a safe and private space for honest self-reflection, a dream journal offers the same kind of private space for exploring one’s dreams. A dream journal “works” as a tool without anyone else’s input. All you need is you, paying attention to your own dreams consistently over time. You can keep the results to yourself, and no one else needs to know anything about what you are doing.

None of this is to dismiss the exciting potentials of many new technologies to improve our understanding of dreams and perhaps even enhance our experience of dreaming in a meaningful way. But the enduring power and simplicity of the dream journal, and its advantages in effectiveness, accessibility, and privacy, suggests that a good strategy for new technologies is to build on the dream journal, amplifying what it can already do. Any new dream technology will be stronger if it is grafted onto a solid dream journal system as its roots.

 

Note: this post first appeared in Psychology Today on May 3, 2021.

Neuro-Nonsense: The Perils, and Promise, of Cognitive Science for the Study of Religion

imgresThis is the text of a paper I presented at “The Psychology of Religion/Religion of Psychology” conference held at the University of Chicago Divinity School  on March 6, 2015.  My paper was the first in a panel devoted to “Disjunctions Between Contemporary Psychology and Religion.”

On July 17, 1990, President George H.W. Bush announced in Proclamation 6158 that the 1990’s were to be officially designated as the “Decade of the Brain.”  The Proclamation began with these lines:

“The human brain, a 3-pound mass of interwoven nerve cells that controls our activity, is one of the most magnificent—and mysterious—wonders of creation.  The seat of human intelligence, interpreter of senses, and controller of movement, this incredible organ continues to intrigue scientist and layman alike.”

President Bush’s Proclamation accelerated scientific efforts to learn more about how the brain works, with a special focus on finding new treatments for devastating neurological disorders like Alzheimer’s and Parkinson’s diseases.  To achieve that goal, powerful technologies were developed to analyze, measure, and influence the brain.  These tools are primarily aimed at addressing the growing medical needs of an aging population, but they have been applied in other areas of research as well, including the psychological dimensions of religion.

Other speakers may talk in more detail about the positive aspects of this turn towards the brain, and so will I.  But first, we should consider the casualties and costs of this historical shift, which has in many ways been disastrous for the psychology of religion.  Three particular losses—of historical awareness, therapeutic engagement, and interest in mysticism—will be the focus of my presentation, which Peter Homans, who taught here at the Divinity School for many years, might have considered a work of mourning, in the sense of responding to loss by the creation of new meanings.  If we can gain more clarity about what has been lost in this field since the “Decade of the Brain,” we can more fairly assess the potential benefits of neuroscientific research for religious studies.  We can also, at that point, consider the potential benefits of religious studies for brain research.

Let me briefly define some terms.

The psychology of religion, as we have already heard, comprises a multifaceted research tradition going back more than 100 years to the pioneering work of Sigmund Freud, William James, Carl Jung, and others.

Cognitive science is an alliance of six disciplines—neuroscience, psychology, computer science, linguistics, philosophy, and anthropology—that together, beginning in the 1970’s and accelerating in the 1990’s, have tried to improve on psychoanalytic and behaviorist models of the mind.

The cognitive science of religion, or CSR, is a 21st century development in the psychology of religion, drawing on contemporary scientific studies of brain-mind functioning.

CSR appeals to many researchers because it emphasizes experimental evidence and testable hypotheses, helping researchers escape the hazy hermeneutics and overly thick descriptions too often found in the contemporary study of religion.  CSR offers a bracing, forward-looking response to the tired and fruitless meanderings of post-modern scholarship.

Unfortunately, the cost of this approach has been a loss of interest in, or even awareness of, the findings of earlier researchers who carefully investigated many of the same topics as those found in CSR.  Anything that happened before the “Decade of the Brain” no longer seems relevant now that we have such powerful neuroimaging tools at our disposal.  This leads to CSR researchers claiming new explanations of phenomena that actually have a long history in the psychology of religion.  This is what Jeremy Carrette has called “disciplinary amnesia,” and our field has a bad case of it.

As a brief example, consider Pascal Boyer’s 2002 book Religion Explained: The Evolutionary Origins of Religious Thought.  This is an admirable work in many ways, and highly influential in CSR, but it takes strangely little account of earlier research in the psychology of religion.  In a passage late in the book Boyer comments on the similarities between religious rituals and obsessive-compulsive disorder (or OCD).  He describes several neuroscientific studies, all conducted in the 1990’s, on dysfunctions in the brain associated with OCD.   Although he does not insist that all religious rituals are pathological, Boyer uses this neurological evidence to support his book’s overall argument that religious beliefs and behaviors are “parasitic” on normal processes of the mind.

I don’t want to engage right now with Boyer’s “mental parasite” theory of religion.  Rather, I want to point out that in two detailed pages of text comparing religious rituals and OCD, Boyer never once mentions Freud, whose 1907 article “Obsessive Actions and Religious Practices” addressed exactly the same topic.  Indeed, Freud’s prescient article was crucial in defining the clinical syndrome of OCD itself, which Boyer now “explains” in CSR terms.

Why does this loss of history matter?  Maybe it doesn’t.  There is an argument to be made that a scientific field should not be overly concerned with or reverential towards its past.  After all, we don’t make people study alchemy before they can start learning chemistry.

But it’s not that simple in the psychology of religion.  Not only does the loss of historical self-awareness lead to unwarranted claims of novel discoveries, it also makes it harder to avoid going down paths that earlier researchers have found to be dead-ends.  Here again, the case of Freud is helpful.  Too few people know or appreciate the fact that Freud was originally trained as a neuroscientist, receiving his education from some of the best medical research institutions in the world at that time.  Freud knew as much about the brain as anyone, and in 1895 he began drafting “A Project for a Scientific Psychology,” in which he planned to use neuroscientific evidence to explain mental life in purely physical terms.  But then, a couple years later, he gave up on this plan, and turned to the study of dreams.  Why did Freud abandon his neuroscientific vision?  Not because he lacked hi-tech brain scanners.  Freud gave up on the 1895 Project because he realized that experimental neuroscience was not enough, and would never be enough, to understand the human mind.  Focusing on the material workings of the brain can only take us so far, before we have to include the analysis of emotion, desire, consciousness, family, culture, and many other dimensions of psychological experience that are difficult to measure or experimentally manipulate.

Paul Ricoeur, in his 1970 book Freud and Philosophy, gave Freud credit for developing a “mixed discourse” between force and desire, energetics and hermeneutics, the workings of the brain and the meanings of the mind.  Freud may have been limited in his view of those forces and desires, but he had the right idea: we need hybrid theories and concepts that can clarify, rather than obscure, the subtle, multidimensional complexities of the human psyche.

This kind of approach has been eclipsed in recent years by the emphasis on brain science as the ultimate source of explanatory truth.  We seem to be going back to a place that Freud abandoned at the end of the 19th century.  It’s worse than just reinventing the wheel, it’s forgetting why we ever needed a wheel in the first place.

The second loss, of therapeutic engagement, reflects another adverse consequence of the “Decade of the Brain.”  Throughout the 20th century the psychology of religion was stimulated by the clinical work of Freud, Jung, and many, many other skilled therapists who delved deeply into the mental worlds of their clients, and in the process gained remarkable insights into the religious and psychological dynamics of their lived experiences.  Both medical psychiatrists and pastoral counselors found useful information here, and their shared interest inspired many fruitful conversations about the role of religion in healthy human development.

In recent years, however, these interpersonal, humanistic practices of therapy have been swept aside and replaced by the increasingly widespread use of psychoactive drugs.  The mental health system, in the U.S. at least, has turned into an impersonal delivery service for prescription medications and short-term cognitive behavioral therapy.  This bears little resemblance to the rich, intimately detailed clinical practices that for so many years were integral to the psychology of religion.

To be clear, many psychoactive drugs save lives and help people stabilize enough to benefit from other treatments.  But the skyrocketing use of these medications has severely undermined the efforts of psychotherapists and pastoral counselors to practice their healing crafts.   Unfortunately I see few people in CSR who regard this as a problem for the field.

The third loss I want to mention regards an appreciation for the multiplicity of religious experiences, from mystical visions and dreams to possession, trance, and ecstasy.  These phenomena are difficult to measure using brain scanning technology, and in any case such “altered states of consciousness” obviously deviate from the mind’s functioning in a normal waking condition—the state to which most psychoactive drugs and cognitive therapies are trying to return a person.  Hence, CSR researchers have tended either to ignore mystical experiences or treat them as pathological failures of normal brain functioning, like bad pieces of neural code. The result is a shallow, homogenized view of human religiosity that excludes precisely those unusual, intensified experiences that William James said more than 100 years ago were key to a psychological understanding of religious life.

On this count we should be no less skeptical toward supposedly “pro-religion” researchers like Eugene D’Aquili and Andrew Newberg, whose brain imaging studies of people in meditation allegedly reveal a common neurological core of all mystical experiences (what they refer to as “absolute unitary being”).  Their claim does not stand up to either empirical or conceptual scrutiny, and yet many people have accepted it because it seems to give a neuroscientific “seal of approval” to the study of mysticism.  This to me is the worst of all worlds: taking poor practices from neuroscience and using them to dumb down the psychology of religion.

So, these three losses, of history, therapy, and mysticism—that’s the bad news of recent years.  But there is good news, too.  For instance, a new branch of research, known as social neuroscience, is taking more seriously the idea that we cannot just study brains, we have to study brains in bodies that live within families, who live within broader social and cultural contexts. It turns out that normal, healthy brain development depends fundamentally on a supportive social environment, on a lively stream of interpersonal relationships.  I know that in the last years of his life Don Browning, who taught religion and psychological studies here at the Divinity School, was having conversations with social neuroscientists in the University, and he engaged with them as Paul Ricoeur might have done, seeking new prospects for a mixed discourse.  Following Browning’s example, I encourage the psychology of religion and CSR to pursue more engagement with this area of brain research.

Still, even the good news has an asterisk attached.  I’ve begun wondering if the appearance of social neuroscience is actually a sign that the brain boom has peaked.  There seems to be a kind of self-deconstructing process at work here.  If we cannot understand the brain without looking beyond the brain, then neuroscience loses its status as an ultimate source of explanatory authority.

The future of the psychology of religion will not, I venture to say, center on brain research, or for that matter on genetics, or evolutionary biology, or the latest findings from any other scientific discipline.  Rather, the future will depend—and I’m sorry, this isn’t going to sound very exciting, but I think it’s true—on data management, meaning our ability to gather, sort, analyze, and creatively integrate information from many different sources.  The Decade of the Brain is over, but the Century of Big Data is just beginning.

I don’t know about each of your different areas of specialization, but in mine the “Moneyball” changes are happening very fast, with torrential volumes of new information and the emergence of amazingly powerful tools of analysis.  In 2009, motivated in large part by a fear of being left behind, I began developing the Sleep and Dream Database, an online digital archive and search engine for empirical dream research.  (With the help, I should say, of software engineer Kurt Bollacker, U.C. Santa Cruz psychologist Bill Domhoff, and his coding colleague Adam Schneider.)  At this point the database includes more than 15,000 dream reports from a variety of sources, including demographic surveys, personal journals, psychology experiments, and historical records.

There are many different analytic paths a psychologist of religion could follow using these materials.  [All of the following examples have links to sample data in the SDDb.]

For example, one could sort through all the dream reports in the SDDb with words relating to religion.

Or, one could look at just the dream reports of people who identify themselves as Born-Again Christians.

Or one could compare the dream recall frequencies of people (American adults) who do or do not consider themselves more “spiritual than religious.”

I mention the SDDb because it is a small but practical example of how to make adaptive use of big data technologies rather than becoming overwhelmed by them.  Of course, there are many limits to this kind of quantitative analysis of what Freud would call “manifest” dream content, along with many questions about personal privacy, interpretive authority, and data security.  But I would like to close my presentation by at least gesturing beyond the critique of neuro-nonsense, and offering the hint of a more constructive response to the question that has drawn all of us here, namely how to promote a more prosperous future in the psychological study of religion.

Thank you.

 

The Technology of Dreaming

For myself I never found need of more than four or five hours’ sleep in the twenty-four. I never dream.”

So said the famously hard-working inventor Thomas Edison in 1921 in his Diary and Sundry Observations.  Edison claimed the only truly restful sleep was totally unconscious, and he regarded dreaming as a waste of mental energy that could be put to more productive use in waking life.

Nearly a century later Larry Page, another iconic figure of technological progress, offered a very different approach to dreams.  In a 2009 commencement address at the University of Michigan he said, “You know what it’s like to wake up in the middle of the night with a vivid dream? And you know how, if you don’t have a pencil and pad by the bed to write it down, it will be completely gone the next morning? Well, I had one of those dreams when I was 23.”  Page awoke from his dream and immediately began writing notes about downloading the entire worldwide web with all links intact—the seed idea for what he later built into Google.  His advice to the graduates: “When a really great dream shows up, grab it!

Which of these two world-changing innovators had it right? Should we strictly limit our sleep and ignore our dreams as Edison did?  Or should we listen to our dreams and try to follow them as Page recommended?

Thomas Edison nappingLight bulbLarry Page 2009

The world is filled with people trying to be like Edison, working nonstop and vowing to “sleep when I’m dead,” but this behavior appears foolish and self-defeating in light of current research in sleep medicine. Numerous studies over the past several decades have shown that inadequate sleep has a negative impact on human health, with harmful effects on our emotional, cognitive, physical, and immunological well-being.  What counts as “adequate” differs for each individual, but only a tiny portion of the population can sleep four or five hours a night and function the next day in an optimally healthy way.

The basic message of this research: A sure way to make yourself less productive is to artificially limit your individual sleep needs.

We can’t do without sleep.  But can we do without dreams?

The scientific evidence is less clear on this point.  Some people insist they never remember their dreams, although closer investigation usually finds they can recall a few dreams, just very infrequently.  (Even Edison mentioned a couple of dreams in his diary.)  Demographic surveys indicate most people remember one or two dreams a week.  Women tend to remember more dreams than men, and younger people more than older people.

Intriguingly, researchers have found that dream recall can be dramatically increased with little more than simple encouragement and having a pad of paper and pen by one’s bedside, as Page did.  It’s fairly easy, in other words, to remember more dreams if that’s what you want.  Build it and they will come.

Neuroscientists have begun to fill in the picture of what happens in the brain while we’re dreaming.  During rapid eye movement (REM) sleep, when most dreams seem to occur, activity slows down in the prefrontal cortex, the part of the brain most responsible for focused rational thought.  Activity increases in the limbic system, an older part of the brain involved with emotions, memory formation, and instinctual responses (e.g., fight/flight, sexual arousal).  Neural activity also increases in regions of the brain devoted to visual processing.

These findings make perfect sense in relation to empirical studies of dream content showing it to be loosely structured, highly associative, emotionally varied, and filled with intense visual images. The neuroscience of REM sleep matches up well with people’s subjective experiences of dreams, giving us more confidence there’s a real connection here between brain and mind.

Dreaming now seems best understood as the psychological expression of a distinctive mode of brain functioning devoted to memory, emotion, and playful meaning-making. It is inherently and powerfully creative, not only in producing experiential worlds of astonishing depth and realism but also in stretching our minds to make surprising new connections between disparate ideas, feelings, and impressions.  Contrary to the stereotype of dreams as nothing but random nonsense, current research shows their content is meaningful at many levels, accurately reflecting our most important concerns and activities in waking life.

Edison was right to this extent: We can ignore our dreams, if we so choose.  But Page was right on the bigger point.  Dreaming is not wasteful; it has its own neurological integrity and psychological value.  It taps into a deep inner wellspring of creative thinking that leads us beyond what is to imagine what might be.

In this sense we can think of dreaming as a kind of innate technology of the mind, a natural tool of creative consciousness.

The question for dream researchers then becomes, how can we use that tool better?  How can we refine it, improve it, make it stronger?

This might sound like the start of a Dr. Frankenstein tale, with mad scientists rashly meddling in mysteries they don’t understand.  But we are not the first to ask these questions.  Throughout history, in cultures all over the world, people have used a variety of techniques to actively stimulate their inborn capacity for powerful dreaming.

For example, the Native American ritual of the vision quest involves several days and nights of solitary fasting in the wilderness as a means of inviting a revelatory dream.  The Muslim practice of istikhara uses special prayers, purifications, and sleep positions to elicit a dream that helps resolve an important question or decision.  The Indian sage Naropa taught his followers how to control their dreams through yogic methods of chanting, breathing, visualizations, and bodily postures.  Temples devoted to the Greek god Asclepius thrived for centuries as holy sites where people came to worship, diet, exercise, and sleep in hopes of receiving a healing dream.

Cultural practices like these represent time-honored, ethically sensitive techniques for intensifying dreams and deriving more insight from them.     

Eventually we will integrate our best models of dream content with highly advanced neuroscientific maps of brain activity during sleep, and this will set the stage for a new generation of technologies that directly stimulate the brain to produce more creative dream experiences.  By fine-tuning the neural parameters of sleep we’ll be able to filter out the noise and amplify the signals of the dreaming imagination.

George Lucas

Undoubtedly this will be good news for the movie business.  As George Lucas recently said at the USC School of Cinematic Arts when asked to predict the future of film, “The next step is to be able to control your dreams. You’ll just tap into a different part of your brain. You’re just going to put a hat on or plug into the computer and create your own world… We’ll be able to do the dream thing 10, 15 years from now. It’s not some pie-in-the-sky thing.”

That timeline seems about right to me, although I would envision devices that generate a more interactive and mutually respectful process between waking and dreaming, with a focus on awareness and growth rather than control for control’s sake.

Beyond their entertainment value, these dream technologies of the not-so-distant future will help us cultivate a more unified consciousness that takes advantage of our brain’s amazing creativity throughout all phases of the sleep-wake cycle.

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Note: This essay also appears on the Huffington Post: http://www.huffingtonpost.com/kelly-bulkeley-phd/the-technology-of-dreaming_b_4378041.html