Search:

Home | Science

Why We Dream

By: Dennis E. Coates, Ph.D.

Last night I had this dream: I was in Mexico working with a local official to organize a high school basketball tournament. He was charging ahead enthusiastically, but I couldn’t get him to focus on the details of planning. I asked him how many teams would be playing and how many gymnasiums were available, and he brushed me off. I asked him how many referees he had arranged and how many days the tournament would run, and he didn’t see why these things were important. “Everything is good. Everything is arranged.” But when I did the math for him, it was clear that he hadn’t made adequate arrangements. It was frustrating to have to work with someone who refused to focus on practical reality.

What does it mean? I’ve never been able to make sense of my own dreams. On the other hand, I’ve had pretty good success interpreting other people’s dreams. A few days ago, a friend shared this dream with me: "I was being attacked by a large man with a knife. He seemed intent on killing me. He chased me relentlessly. I was terrified, but I couldn’t run away fast enough. I tried as hard as I could to move my feet, but I didn't seem to be going anywhere. Eventually, he caught me and stabbed at my face, cutting my lip. I didn’t feel any pain, but I was afraid he would kill me. That’s when I woke up."

I offered this explanation: “While asleep, your mind is probably picking up on fresh emotions related to your being laid off recently. As a result, you see the world out there as huge and impersonal and perilous. You feel threatened right now and vulnerable. Since you lost your source of income, the practical threats to your life seem very real to you. You’d like to do something about it, but there’s nothing promising out there right now, and you can’t seem to escape being hurt financially.” My friend thought the interpretation was on target.

People are often disturbed by their dreams. They worry about what they might mean. To understand dreams, I think it helps to know why we dream in the first place.

Yesterday I checked what current research has to say on this issue. As I’ve mentioned several times before, I’ve done a lot of reading about the brain and personality as a part of my research for MindFrames, and over the years I've revisited the scientific literature on dreaming a number of times. The bottom line: scientists still don't know why we dream. There have been a lot of theories, some of them over 100 years old, but none of them have been validated by research.

I have my preferred theory about why we dream, based on some of the new findings in sleep research, a separate area of inquiry. When asked why we sleep, researchers have much to say, but it’s mostly descriptive. They’ve identified three stages of sleep, in which EEGs show low-frequency brain waves, accompanied by reduced muscle tone, heart rate and breathing. These three stages are believed to be preparatory stages, after which the brain switches into a fourth, much deeper stage of sleep, which is marked by high-frequency brain waves, and practically no muscle tone. This is known as REM (rapid-eye-movement) sleep, which lasts 30-45 minutes and begins again in cycles of 90-120 minutes. Subjects report dreams five times as often in this fourth stage.

The most plausible explanation for why we sleep is that when the brain is active during waking hours, brain cell metabolism produces chemical byproducts. These need to be cleared out and replaced on a regular basis or they accumulate and get in the way of normal neurotransmitter activity, causing the sensation of being "mentally tired." Without mental rest (sleep), the brain would have difficulty functioning. This process is similar to what happens during "muscle fatigue." Prolonged use of a muscle area creates the waste byproducts of exercise metabolism, causing the sensation of need for physical rest, which gives the body time to remove these byproducts.

Moreover, the whole body requires rest in order to regenerate. The autonomic nervous system consists of two subsystems: sympathetic and parasympathetic. Both cannot be active at the same time; when one predominates, the other is switched off. When we’re active and coping with challenges and stressful situations, we're using our sympathetic nervous system. In this state, the human organism uses up energy. When we're calm and passive, the parasympathetic nervous system kicks in, so that the body can repair and restore itself. During rest, the immune system builds itself back up again. Without rest, we heal more slowly and are more vulnerable to disease. The importance of sleep, then, is that it forces this mental and physical inactivity upon us.

The above describes what happens, but it doesn’t explain why people dream. Freud believed that dreams were the experience of “the unconscious,” a repository for sexual and violent urges too raw to be dealt with consciously. Another long-standing theory is that dreams are how people sort through and integrate daily experience. I've also heard some say that dreams occur because the creative part of ourselves needs to be free to express itself, which it can't do adequately while we're awake. But these are all unproven speculations.

I side with the more recent notion that we dream because that’s all the brain can do without continuous input from the senses, which are turned off during sleep (see The Dreaming Brain, by J. Allan Hobson, Basic Books, 1988). In this view, dreams are nothing more than the experience we have when the brain can no longer organize itself based on external reality. In REM sleep, intense emotions associate with remembered images or create new ones in no orderly structure or sequence or time sense. That's why dreams are strange; they're organized by internal association, not by the familiar, continuous input of the real world. And that's why dreams are hard to remember. They're stored in short-term memory; but because they don't have a clear relation to the real world, it's hard to integrate them into long-term memory upon waking, and short-term memory is wiped clean in only a few seconds.

What do our dreams mean? Well, I don’t think they have any intrinsic meaning. But they often contain images and feelings that have been recently active in consciousness and so are more easily associated in unconsciousness. Consequently, dreams often parallel issues that have been going on in our daily life.

While talking on the phone with one of my colleagues, I mentioned that I was writing a piece on dreams, and he shared his most recent dream: "I had a training job with one of my former clients, a small government agency in Washington, DC. They were in a new building, so I got there about 6:00 am and a lot of people were already there. My wife and another couple were there, and we drove in their car to another town to get breakfast. I needed to get back, but the couple didn’t have time to drive me. I had trouble getting a cab, and I was late getting back. I hadn't talked with the director yet, so I was unprepared. The four of us never did get our breakfast because the wait was too long, so I was hungry on top of everything else."

I told him: "The dream reflects your perception of work. You have so many challenges that you have to work long days. You start early and stay late. Your tasks are complicated by the needs of other people, which you also try to satisfy, but it all seems too much to get done. You do your best, but unforeseen problems happen, and you can’t get everything done, including your personal needs. You feel ineffective."

He agreed, but he said there was another part to the dream: "I was in a hotel room that was adjacent to a clothing store. Two guys broke into my room while I was in the bathroom. I could see them but they couldn't see me. I watched them go into the store, take clothing and other items and carry it out of the store through my room without paying for it. I went to the front desk to report them and then I realized that if they could steal, they might also be capable of hurting me. I thought about trying to identify the two guys but there were no pictures to review. Also, I was afraid they might come after me."

I gave him my interpretation: "The hotel represents the world of business, which you see as a threatening place where bad things happen. You're a participant there, and you’d like to do the right things, but there are huge risks. It seems almost impossible, and you’re afraid you could be harmed."

"Yes, my firm is small," he said, "and we're in a tough time right now and I feel a lot of pressure to make it work. It's a jungle out there."

Until research proves me wrong, I’m sticking with my theory. It works for me, and it allows me to impress my friends.

Article Source: http://www.articledestination.com

Dennis E. Coates is CEO of Performance Support Systems, author of MindFrames, a brain-based personality assessment system (www.initforlife.com) and co-founder of the Train-to-Ingrain alliance (www.train-to-ingrain.com, info@train-to-ingrain.com, 800-488-6463), which delivers a reinforcement-centered approach to learning and development that achieves permanent, measurable improvements in workplace behavior and positive impacts on business results.


Please Rate this Article   

Not yet Rated

Click the XML Icon Above to Receive Science Articles Via RSS!

Additional Articles From - Home | Science

Top Authors  Most Popular Articles  Submission Guidelines  Ezine Notifications  Article RSS Feeds  About Us  Contact Us  Privacy Policy  Terms of Service

Copyright © 2005-2012  ArticleDestination.com  All Rights Reserved.

hit counter html code

Powered by Article Dashboard