Perchance to Dream: How Dreams Contribute to Health

Introduction

  • Speaker: Doctor Adam Sorcher

  • Dual boarded in family medicine and sleep medicine

  • Practiced for over 20 years in Northern New England along the Connecticut River

  • Emphasis on the growing appreciation for overall health, specifically highlighting sleep

Importance of Sleep in Health

  • Recent recognition by the American Heart Association: Sleep as one of the eight essentials for cardiovascular health

  • Sessions at conference: Includes topics like dream disorders, restless leg syndrome, obstructive sleep apnea, narcolepsy, shift work disorder, and insomnia

  • Advocacy for increased focus on sleep medicine at FMX conferences

Learning Objectives

  • Overview of sleep medicine history

  • Discussion on three clinical syndromes of abnormal dreaming

  • Addressing common patient questions about sleep and dreaming

Understanding Sleep: The Sleep Hypnogram

  • Depiction of sleep cycles in adults: Non-REM (NREM) and REM sleep

  • Prioritization of NREM sleep over REM sleep

  • Key percentages: NREM constitutes about 80% of adult sleep, while REM constitutes about 20%

  • Sleep patterns change throughout adulthood, stabilizing at around age 18

  • Importance of deep NREM sleep early in the night:

    • Deepest sleep occurs in the first few hours

    • Consequences of disturbances during this phase (e.g., being on call)

  • Transition to REM sleep occurs approximately 90 minutes after falling asleep

  • Characteristics of REM sleep:

    • Increasingly longer cycles towards the end of the night

    • Critical for many functions

Historical Context of Sleep Medicine

  • Non-REM sleep: believed to be the foundational form of sleep across species

  • REM sleep: evolutionarily newer and discovered in the 1950s by Eugene Ascherinsky through a study involving his son

    • Landmark paper: "Regularly Occurring Periods of Eye Motility and Concurrent Phenomena during Sleep"

    • Coined by Ascherinsky and Kleitman, recognized as founders of modern sleep medicine

  • Ascherinsky’s discovery was based on suggestions from EEG wave speeds and eye movements during sleep

Characteristics of REM Sleep

  • Commonly associated with dreaming

  • **Unique Features of REM Sleep:

    • Muscle paralysis (REM atonia)

    • High brain activity akin to wakefulness

    • Fluctuations in physiological parameters (body temperature, heart rate, blood pressure)

    • Poikilothermic nature: body temperature reflects ambient temperatures during REM

    • Often described as paradoxical sleep due to these contrasting features

  • Significance of NREM and REM sleep for metabolism:

    • NREM sleep allows ATP stores to build up

    • Adenosine plays a key role in sleepiness and is affected by things like caffeine

Dreaming and Its Historical Perspectives

Historical Views on Dreaming:

  • Ancient concepts of dreams as messages from deities (e.g., Egyptian and biblical contexts)

  • Greek mythology: Morpheus as the god of dreams

  • Sigmund Freud’s contributions from "The Interpretation of Dreams" (1900):

    • Dreams as manifestations of repressed desires (latent content)

    • Lack of scientific reproducibility in dream interpretations

Historical Pioneers in Sleep Medicine

  • Bill Dement: An influential figure in sleep research at Stanford

    • Worked alongside solidifying dream reporting methodologies during sleep studies

  • Notable findings:

    • High incidence of reported dreams during REM sleep compared to NREM

    • Qualitative differences in REM versus non-REM dreams

REM Sleep Research Innovations

  • Utilization of functional MRI for studying the dreaming brain:

    • Active regions during REM include:

    • Motor strip: responsible for movement

    • Hippocampus: linked to autobiographical memory

    • Visual cortex and amygdala: associated with emotional intensity in dreams

    • Inactive region: prefrontal cortex during dreaming

  • Recent research exploring relationships between brain activity while awake and dream content

Questions and Common Myths about Dreaming

  • Some individuals are naturally better at recalling dreams, with methods like journaling aiding memory

  • Dreams occur in both REM and NREM sleep, albeit with different characteristics:

    • REM dreams: more vivid and bizarre

    • NREM dreams: simpler, often more mundane

  • Importance of obtaining sufficient sleep to access both REM and NREM phases

    • Sleep deprivation may selectively deprive REM sleep

Clinical Disorders Related to Sleep

1. REM Behavior Disorder (RBD)

  • Description: Neurodegenerative condition affecting muscle atonia during REM

  • Potential risks: Physical harm due to dream enactment behaviors

    • Often a precursor to Parkinson’s disease

  • Treatment options:

    • Clonazepam and melatonin as effective treatments

    • Consideration of SSRIs in younger patients leading to drug-induced RBD

2. Nightmare Disorder

  • Criteria:

    • Repeated occurrences of distressing dreams

    • Requirement of lucidity upon awakening

    • Distinction from PTSD-related nightmares

  • Treatment options:

    • Image rehearsal therapy for cognitive restructuring of nightmare endings

    • Minimal effectiveness of prazosin as a treatment in recent studies

3. Night Terrors

  • Characterization: Occurs during deep NREM sleep early in the night

  • Misconceptions: Often mistaken for nightmares; children don’t require interventions as they are not aware

  • New research suggests preemptively waking children before expected night terrors can decrease occurrences

Conclusion

  • Emphasis on the prioritization of both REM and NREM sleep for overall health

  • Encourage patients to ensure adequate sleep duration for optimal health benefits

  • Encourage discussions around sleep and dreaming with patients

  • Resources and recommendations for patients:

    • App: Dream Easy, Image rehearsal therapy