Showing posts with label Dreams. Show all posts
Showing posts with label Dreams. Show all posts

Sunday, November 01, 2009

New Look at Dream Interpretation

I had a waking up dream that involved an assemblage of musical notations: black quarter notes, in three dimensions. They were intertwined as the twigs in a bird’s nest to make structures such as a straight-backed wooden chair.

I realized I had seen these things before including the chair-like structure. It had been the previous night during a falling asleep dream, while listening to quiet jazz on the radio. I did not hear music, but in the dream I examined the note structures as if they were perfectly reasonable objects that one might study scientifically.

This sequence of two dreams reveals some interesting points about the nature of dreams and their interpretation:

1. Usually when you recall a dream, the things you dreamed about are bizarre, and you realize your thought processes were bizarre because you accepted the bizarre goings-on of the dream as a real reality.

In a lucid dream (in which you are aware that you are dreaming), you might think, “How odd, horses normally cannot fly,” but you accept that this dream horse can. So your consciousness, though more lucid, is still delusional.

If you recalled a dream that was completely reasonable, you would not call it a dream, you would call it a thought. You would just be remembering a thought that you had.

2. Dreams cannot be turned on and off like imagination. Once you are “awake” in reality mode, that is the grounding for other variations in mental state. But if you return to dreaming, you must give up your wakeful reality testing. You can’t voluntarily suspend all reality-testing and remain awake. Dreams and wakefulness are thus as incompatible as oil and water.

3. Dreams are identified in retrospect, from the point of view of awake consciousness, and from which all conversation and communication flow. In a dream, the dream is the reality. There is no other point of view from which to critique that reality.

I am not worried that I might actually be a butterfly dreaming I am a person because wakeful consciousness is known to itself. Dream consciousness is not. (In lucid dreaming, only the lucid consciousness is known to itself.)

Within a dream, there is no question about the reality status of the experience, because literally that question does not come up. Reality testing is only a question that can be raised from the point of view of lucid consciousness. So if you dream you are a butterfly, you are a butterfly within the context of that dream, because there is no other context from which to question that reality. Only later, when awake and lucid, can you say, “Man, that was crazy!”

I had a dream of a straight-backed chair made out of giant, three-dimensional quarter notes. Within the dream, that was real, by definition. But in what way was it real?

4. What if dream images corresponded to activation of certain brain structures? A quarter note has a shape not entirely dissimilar from that of a neuron. A networked cluster of quarter notes would not be too different from a cluster of neurons. If the dream images were in some way shadows of actual brain structures, that could be one sense in which the dream structures were real.

But what kind of a “shadow” of the brain could the dream structures be? There is no known or even imagined causal linkage between brain physiology and mentality. We know there is a correlation, but we have no idea what kind of relationship it is. From the Penfield and Roberts (1959) studies we learned that electrical stimulation of the cerebral cortex in a live, conscious human was followed by spontaneous reports of episodic memories of extraordinary vividness, but we cannot explain that association.

There is no way, according to the laws of physics, for a change in a brain neuron to cause a mental experience. If that were to happen, it would violate the law of conservation of energy because memory is non-physical. Memory cannot be measured in space and time. It has no no width, no mass, no volume; it conducts no electricity and absorbs no light. Memory does not meet criteria for physicality.

To insist that memory is actually a physical circuit in the brain, is to say that electrical stimulation of one part of the brain causes neurological activity in another part of the brain. We would then have no use for the term “memory” since it would not refer to anything. So if we are going to use the term “memory”, it refers to the nonphysical mental phenomenon. How a brain circuit is related to a memory, exactly, is an unsolved mystery.

5. What are we aware of when we have a toothache? We experience a mental state we have learned to call “pain.” I hypothesize that the mental state is correlated to activation of a network of brain cells that include some neurons in the somatosensory cortex, which is what enables us to locate the pain in the mouth and not the toes, for example. If true, we can say that the mental experience of toothache is a “reading” of a certain brain state, in the same way that the mental experience of having a full bladder is a “reading” of a different neurological condition of the body.

In a similar way then, the dream of the quarter-note chair was a mental reading of a certain brain condition, albeit not one that is readily interpreted as some condition of the body.

Under this interpretation, one can speculate that the quarter note chair might have been a mental conceptualization of activity in the right temporal cortex, which is active when we hear music. Since I was listening to music before the first dream, that is a plausible assumption. The dream could have been my mental “reading” of residual brain activity.

6. In a typical dream, in which horses fly and rivers flow with melted cheese, it is difficult to speculate how the mental images might be readings of brain activity. However, if one wakes up from a dream with a full bladder, it is often the case that the dream images involved water, swimming, and the like, so there is a plausible relationship between the dream image and the “reading” of the bodily state.

Physicians and brain physiologists should have dream images that are more easily associated with bodily conditions than would be true for other people, because they have more detailed, ready-made social-linguistic conceptualizations of those bodily conditions to draw upon.

7. It also follows from this line of thinking that Freud’s method of dream interpretation by free-association has nothing to do with the meaning of dreams. Of course it is possible to free-associate to the ideas and images in a dream report, just as it is possible to free-associate to something that happened yesterday. The dream report is just a kind of short story, no different in principle from one plucked from a published anthology.

Free-associating to its elements may be a fruitful way to start a conversation about previously unconceptualized feelings and ideas, but it is no way an “interpretation” of that dream. The correct interpretation of any dream is that it is a mental conceptualization of brain events occurring during Phase I REM sleep.

8. In the future there will be a downloadable iPod application that will allow real-time fMRI monitoring of brain activity so you can see what your brain is doing while you type, eat, walk, fantasize, and listen to music.

Over time people will learn to conceptualize and control the brain’s activity as well as athletes do their muscular activity today. Most dreams then would cease to be bizarre and would be more like descriptions because the correlation between brain activity and socio-linguistic conceptualization would be stronger.

People will inevitably communicate by reference to commonly identified brain images, the way we now maintain the social fabric by reference to commonly understood activities, as in, “How ‘bout them Yankees?”

In the future people will refer to numbered and idealized fMRI sequences correlated to common experience. They will talk about a fMRI 42a followed by a 197-3 then ask, “What do you think of that?”

Too bad I’ll miss it.

Friday, April 24, 2009

Dogs Don't Know What Dreams Are

What do dogs dream about? Chasing rabbits, or something similar, we assume. Dog brainwaves during sleep show rhythms similar to ours, including REM periods during which dreams occur. So it is a reasonable guess that dogs have dreams.

I saw a video clip of a dog having a dream. It is embedded in this inane “news” report (as of 4/21/09):
http://ac360.blogs.cnn.com/2009/03/03/the-shot-dreaming-dog/

The dog is asleep, lying on its side, when its feet start twitching. The feet and legs move faster, and become increasingly energetic until the dog looks like it is running full stride about as fast as it can. The forepaws reach out and the back legs push off powerfully. This is a dog in full pursuit!

Then the dog gets up on all fours, and still asleep, or mostly asleep, barks, and bounds headlong into a wall. The dog falls down, gets up again and looks around dazed and confused. It’s a humorous video.

But the interesting part is that dogs don’t know what dreams are. They have limited conceptual capacity, certainly nothing that would enable them to understand the difference between dreaming and wakefulness. Children may have the same problem until caregivers instruct them on the difference. “Don’t be afraid, it was only a dream; It wasn’t real.” Nobody tells the dog that.

From the dog’s point of view it was, for all psychological purposes, actually in pursuit of some prey when suddenly a solid wall intervened. What kind of world is that to live in? That’s a world that makes no sense. Yet what can the dog do but accept it? That is just the reality of the dog’s experience.

Normally, during REM sleep (dream sleep), the musculature of the body is paralyzed (REM atonia). Signals from the somatosensory cortex are damped so we do not act out our dreams. In abnormal cases, a person might partially act out a dream, such as by sleepwalking or sleep talking. But normally, the brain inhibits the action signals so that doesn’t happen.

This video showed what looked like an older dog, and it is likely that his brain was not functioning properly, not inhibiting his bodily action during REM sleep. A few twitches might be normal, but such vigorous acting out of a dream is an abnormal occurrence.

Even for us, from inside the dream, the activity of the somatosensory cortex is the same as it would be in waking experience, so the dream seems “real.” It IS real, as far as it goes, because the same brain circuits are being used as would be used in waking life. But without feedback from the body, those action signals don’t have normal consequences, so you might find yourself flying through the air or walking through walls. As far as the brain is concerned, it is just another experience.

Why dream? There are theories that say the dreamer needs to work through psychic conflicts, express subliminal id impulses, and so on. The dream therefore serves a psychic need. But it seems implausible that a dog has repressed sexual urges or familial tensions. It is more likely that the dog’s dreams (and our own) are simply attempts to interpret the brain’s REM-phase activity as waking experience.



The dog does not think, “Aha! Rabbit! Must catch!” The meaning is automatic. Dogs chase rabbits; that's it.

For the dog, there is no difference between chasing a dream rabbit and chasing a real rabbit. In the dream, joyfully chasing the rabbit over hills and vales, that is just as valid and real as any other experience in the dog’s life.

After waking, the dog does not think, “I wonder why I feel tired and sore, when just a few minutes ago I was chasing that rabbit all over creation.” The dog cannot think like that and is oblivious to the question. The dog does not think, “Hey, what happened to that beautiful field I was just in? How did I get into this dingy, stuffy room?” Again, ignorance is bliss . Dream and reality are not even alternate kinds of experience for the dog. They are just two experiences that happened. Nothing is reasonable or unreasonable for a dog.

Why isn’t it that way for us? We are extremely keen on making a distinction between what is real and what is only a dream. It doesn’t matter to the dog. Why does it matter for us?

Friday, October 03, 2008

Sensorimotor Dreams FAQ

These questions and answers concern "sensorimotor dreams" the most common type, which are also the foundation of social dreams.

What Causes Dreams?

During REM sleep, an area in the brainstem called the pons becomes active, causing the eyes to move about. Some researchers (e.g., Alan Hobson) believe that the pons activity is random and has no intrinsic meaning or purpose.

The pons is connected to the sensorimotor cortex at the top-center of the brain, and activates neural circuits there for basic sensorimotor behavior, such as reaching, walking, and moving the eyes.

The sensorimotor activation is not strong enough to cause actual bodily movement (other than in the eyes), or actual sensations, but it is strong enough to be experienced by the dreamer as reaching, walking, looking, and so on, and that is the dream: experience of random activity in the sensorimotor cortex.

Why do dreams seem meaningful?
Dreams seem meaningful because when you remember them you are awake, at least awake enough to say, "Wow, what a dream! I dreamed I was ..." When we are awake, we seek meaning and we find it. That's why there is a face on the moon -- we do not like random, meaningless patterns, and especially not random, meaningless experience.

As we recall the dream experience, we invest it with emotional and social significance. The process is like creative story telling. A list of the brain areas that were activated would be like a list of random paragraphs. But in recalling the dream events, we make them into a (more-or-less) meaningful story.

What is the meaning of this dream?
The source of the dream has no more meaning than a burp, because it originated from some brain circuits that became lightly activated as part of an automatic bodily process. But the dream report has all the personal meaning that any story you made up would have. As a creative product it reflects your interests, experiences and concerns, whether those are explicitly acknowledged by you or not.

Do most dreams have sexual or aggressive meaning?
There are basic brain circuits for sexual or aggressive acts, and these might have been activated during REM sleep, which you would have experienced as sexual or aggressive urges. In the same way, if you have an empty stomach or a full bladder, you might experience those in a dream as food scenes or as swimming in the ocean. You provide detail as you create the dream story at recall.

Do certain dream images have fixed symbolic meaning?
Certain images or thoughts have commonly recognized meaning because they are well-known cultural images. You don’t need an unconscious id or superego dreamwork for a sexual interpretation of a train plunging into a dark tunnel. It's a common image suitable to describe having experienced activation of a sexual arousal circuit. However there is no justification for most interpretations listed in books of dream symbols.

Does dreaming of spiders mean you fear being engulfed by your mother? There is no necessary connection. However, brain activation of tactile (touch) receptors on the skin could appear in a dream report in any number of expressive ways, including feeling enveloped, smothered, hugged, or covered in spiders.

Are dreams the royal road to the unconscious?
Analysis of dream reports can reveal hidden motives, attitudes and beliefs of the dreamer, but so can analysis and discussion of TAT stories (Thematic Apperception Test) and Rorschach (“inkblot”) responses, artistic products of all kinds, and even ordinary conversation. Dream reports may be fertile for this kind of exploration because they are typically recorded when the author is not fully awake, but they are not any more "royal" than any other creative product.

Why can I fly in my dreams but not in real life?
The dream story tries to accommodate the feelings of lightly activated brain circuits. If an activated sensorimotor pattern involves movement in space, then coordinated visual input would change accordingly. Sensorimotor patterns are interconnected in that way. But that particular complex of sensorimotor pathways might not involve any activation associated with walking or running, for example.

So how is the awake self, constrained by reality, supposed to interpret this vague dream experience? “I feel like I moved from Point A to Point B, and the perceptual scenery changed appropriately as I moved, but I didn’t walk or drive, or bicycle or swim. I don’t know how I did it. So I must have flown.” That is the most direct and “logical” explanation consistent with the “memory” (feeling) of the dream-activated sensorimotor circuit.

Why are dreams bizarre and irrational?
Dream reports are bizarre and irrational because they are waking fabrications constrained by the real world that attempt to articulate correlations between sensori and motor patterns felt in the brain. The dream story tries to flesh out a narrative from those minimal patterns and the result is like trying to construct a sonata from random groups of notes. The result is not likely to have much structural integrity, but might be creative and amusing.

Is it true that every dream is two dreams?
Yes. As psychoanalysts have said since Freud, every dream consists of the manifest dream report, and under that, the latent dream. The purpose of dream analysis is to use the manifest to understand the latent. But that process is no different in principle from how we analyze an utterance into its surface and deep structures or deconstruct an essay into its implicit meanings. Every human communication and social artifact has at least two levels: the manifest, realized product, and its latent, underlying intent. A dream report, as a creative product, is no exception.

Do we dream in color or black-and-white?
Neither. Dreams are attempts to explain certain bodily feelings, those of lightly activated brain circuits. Brain circuits have no color. It is completely dark inside the skull. However, the dream report might use either color or monochromatic imagery as appropriate in its construction.

Why can’t I remember my dreams?
What you have are feelings of lightly activated brain circuits at certain times of night. If you are not willing or able to conceptualize those into imaginative stories, then there are no dreams.

Is a dream a message from another dimension?
No, it is a complete fabrication of your own, formulated around dim experience of some lightly activated brain circuits.

Can I have a dream that does not belong to me?
Not unless you have circuits in your brain that don’t belong to you. However, you might construct a dream report using elements from public stories.