The Stuff That Dreams are Made Of

No cognitive state has been more misunderstood over the course of human history than dreaming. Dream science is affected by medical, psychological, social, and sleep variables, and the methodologies used to study dreams are inconsistent, at best. Still, dreaming is an important component of the human experience and the more we learn about dreaming, the more we can unlock the mysteries of the mind.

Dreams truly became part of the medical vernacular in the early 20th century after Freud and his supporters developed techniques for psychoanalysis and dream analysis, believing that dreaming was a reconstruction of emotional events in a person’s past. Freud’s dream theories emphasized the psychopathological associations of unusual dreams and his definitions eventually led to the theory of dreams as wish fulfillment. Dreams were also used in the treatment of mental illness.

Fifty years after Freud’s work, science was able to analyze sleep through polysomnography and sleep was electrophysiologically staged. The initial theory of dreams occurring during rapid eye movement (REM) sleep has changed to an understanding that dreams occur in all stages of sleep. As medicine expanded its understanding of how the human body sleeps, the understanding of dreams diminished. Today, dreaming is considered mentation or cognition that occurs during sleep. As a culture, we have evolved away from the psychoanalytic definitions of dreams from a century ago.

Sleep is a subjective experience and its evidence-based study is limited by individual dream recall and associated pathophysiology. Dream recall varies with stage of sleep, and also varies with age, gender, and vocation. Recall is higher among women and young people, and is also higher among people with creative interests, indicating that dreaming may be a part of the creative process. Dream salience and intensity, as in nightmares, increases dream recall. A small percentage of individuals report no dream recall at all. Though rare, these individuals have no memory impairment and function completely normally in society.

Dreams are most often narratives that are nothing more than the mind organizing experiences into patterns. Dreams can be adaptive and problem-solving as the brain connects, compares, and integrates experiences and information. The content of dreams does not differ among ethnic groups, personality types, psychopathologic diagnoses, or socio-demographic categories. But, personal experiences and emotions – more often traumatic experiences — do influence dreams. Nightmares associated with posttraumatic stress disorder are frequent.

Chemicals also influence dreams. The primary neurotransmitter influencing sleep is acetylcholine; many pharmaceutical agents have anticholinergic activity, leading to the reported side effects of nightmares, hallucinations, and disordered dreaming. Stimulants and sedatives are the most commonly reported medications with such dream-altering side effects. Beta-blockers, selective serotonin reuptake inhibitors, and type-1 antihistamines can also induce disordered dreaming and nightmares.

Dreams can also bring unwanted associations including arousal, sleep terrors, confusion and disorientation, incoherent vocalization, and fragmentary dream recall. Dream-related movement or paralysis can occur and often lead to intense stress for the dreamer. Sleep talking, anxiety and panic attacks, and partial epileptic seizures can cause embarrassment, insomnia, and daytime anxiety.

Dreams are the things that our mind thinks while we are sleeping. They can be analyzed from behavioral, anatomical, chemical, physiological, and pathological perspectives. While dreams do not carry the influence in diagnosing and treating mental illness as they once did, dreams are still an imperative aspect of our emotional functioning, since they organize and expose our experiences and emotions. Dreams are a part of who we are – individually and collectively – and the science of sleep and dreaming deserves attention from clinicians and patients, alike.


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Image via agsandrew / Shutterstock.

  • Valerie Lewis

    Thanks for the sensible article about dreaming. What interests me is that few people have considered that dreams are not likely to be narratives that we remember, but that a narrative structure is created from the sleep-brain activity by a waking/wakened mind. If I recall correctly, studies from the 70’s showed that when wakened during a dream and asked to recall immediately what was experienced, the reports were not of coherent narratives, but of chaotic imagery and experiences. Martin Seligman wrote a wonderful theoretical paper back in 1987 about all this ( Seligman, M. E. P. (1987). A reinterpretation of dreams. The Sciences, 27, 46-53.) I hope that this amazing paper gets revived, because recent interest by cognitive scientists in a less reductionist approach to consciousness/mind (e.g. Alva Noe’s Out of Our Minds) has made a space for Seligman’s ideas to finally be looked at seriously.So while it is obvious to me that dreams are things the mind does, what you have left out is the possibility that what we call a dream is a narrative constructed after waking, from brain activities that occur while sleeping.

    Another equally interesting question, and one that has never really been answered, is why we sleep. Most animals do it, and yet no reason for it has ever really been ‘dreamed’ up.

    • This comment is for Valerie Lewis I love what you wrote in your comment.All your perspective’s of dreaming. It seems you have a very open mind.Which is something I love to see in people.

  • I really like this little article about dreaming.From my perspective I dream to let all my stress go.Make my own world out of my dream.I’m a famous singer what I always wanted to be,but sometimes I see that my dreams try to tell me things that happened in the past or will happen to me in the future I think I’m starting to understand them.little by little

  • Shawn Stacy

    Very good article. All that was mentioned in here relates to what I have dealt with over such a long period of time. Thankfully now I have been able to control it with the proper medications.

    • octavia watson

      I’am very glad to hear that.

  • Pingback: Dream Analysis | Repairing Shattered Pieces()

Jennifer Gibson, PharmD

Jennifer Gibson, PharmD, is a practicing clinical pharmacist and medical writer/editor with experience in researching and preparing scientific publications, developing public relations materials, creating educational resources and presentations, and editing technical manuscripts. She is the owner of Excalibur Scientific, LLC.

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