Dream Research Hub
The 20 most important scientific sources for evidence-based dream research.
Research Databases
- DREAM DatabaseDatabase
Open database with sleep EEG and dream reports for research.
- Sleep and Dream DatabaseDatabase
Key source of dream content and sleep data for research.
- OpenNeuroNeurodatabase
Open EEG/fMRI data for sleep and consciousness research.
- OSF. Open Science FrameworkOpen Science
Open datasets and preregistrations for transparent science.
Journals & Preprints
Peer-reviewed journal, indexed in PsycINFO and Scopus.
- PsyArXivPreprint
Early access to current dream and psychology research.
- Sleep Medicine ReviewsReview Journal
The leading review journal in sleep and dream science.
- Frontiers in PsychologyJournal
Relevant for dream consciousness and cognition research.
- Nature CommunicationsTop Journal
High-ranking publications on neuroscience and sleep studies.
Bibliographic Databases
- PubMedBibliographic Database
Central search for neuro- and sleep-science dream research.
- PsycINFOBibliographic Database
Key resource for psychological dream research and content analysis.
- ScopusCitation Database
International coverage of dream, sleep and psychology literature.
- Web of ScienceCitation Database
Standard for academic reputation and citation analysis.
- NIH/PMCFull-text Archive
Free full texts for dream and sleep research.
- Cochrane LibraryEvidence Database
Medically sound appraisal of sleep and dream interventions.
- ClinicalTrials.govStudy Registry
Important for dream research with interventions and therapies.
Professional Associations & Societies
- IASDAssociation
International professional society for scientific dream research.
- Sleep Research SocietySociety
Relevant institution for sleep science and dream research.
- ESRSSociety
The leading European organisation for sleep research.
- World Sleep SocietyUmbrella Organisation
Global umbrella association for sleep medicine and sleep science.
Classify Dreams Scientifically
Eight empirical categories based on the Hall/Van de Castle system.
Characters
Who appears in the dream? Each entity coded by type and relationship to the dreamer.
Social Interactions
Characters interact with each other. Three groups: aggression, friendliness, sexuality.
Activities
What happens in the dream? Actions form the narrative framework of content analysis.
Affect / Emotion
Which emotions are present in the dream? Five reliably codable core affects.
Settings
Where does the dream take place? Setting categories held broad for reliability.
Objects
Which things appear in the dream? Functional classes rather than free symbolism.
Time Markers
Time references, repetitions and sequences in the dream reports of subjects.
Dream State
Metadata of dream experience: content and quality are considered together.
Explore and Compare Dreams
24 Research Cards. Filterable by type, evidence and method.
Dream Characters
Dream figures coded systematically by type, familiarity and role.
Interactions
Social interactions: aggression, friendliness, sexuality as dimensions.
Emotions in Dreams
Core affects in dreams: fear, joy, sadness, anger, confusion.
Dream Settings
Where the dream takes place: indoor, outdoor, familiar or foreign.
Dream Activities
What happens in the dream: movement, talking, thinking, escape, work.
Dream Objects
Objects in the dream as functional classes: food, money, tools.
Time Markers in Dreams
Time references, repetitions and sequences in dream reports.
Dream States
Metadata: lucid, nightmare, recurring, fragmented, vivid.
Content Analysis Dream
Systematic coding of dream reports into clearly defined categories.
Dream Journal Practice
Self-reports of dreams, recorded immediately upon waking.
Sleep Lab Reports
Reports from REM awakenings under controlled laboratory conditions.
Most Recent Dream
Single report for population-wide surveys, methodologically valid.
Dream Surveys
Large-scale self-reports across demographic groups.
Neuroimaging Dreams
fMRI and EEG during REM sleep to map neural correlates.
Hall/Van de Castle
The foundational coding system for dream content analysis since 1966.
DREAM Database
Open database with sleep EEG and dream reports for research.
IASD Association
International Association for the Study of Dreams, global society.
PubMed Dream Research
Primary search for dream research and sleep neuroscience.
Nightmare Repetition
Nightmares recur in 60 to 75% of affected individuals.
Negative Dream Affects
Negative emotions outweigh positive in most dream reports.
Social Dream Themes
Most dreams contain at least one other person.
Flying Dreams
Reported by around 50% of adults, often with lucid dreams.
Lab vs. Home Dreams
Dream content from sleep labs and home settings is comparable.
Emotional Memory
Dreams can consolidate emotional memories during REM sleep.
Dream Research Briefs
Short, scientifically backed research briefs on dream research, methods and evidence.
Do All Humans Actually Dream?
Polysomnographic studies reliably confirm that all healthy humans dream.
- REM sleep occurs in all healthy humans
- Dream recall varies between 10 and 90 percent
- Congenitally blind dream non-visually but with emotional intensity
What Are Our Dreams Made Of?
Dream content follows measurable cognitive patterns and emotional structures.
- 80% of dreams contain known people and places
- Negative emotions predominate across most cultures
- Sleep stage influences dream character (REM vs NREM)
Do Dreams Have a Function?
Several scientific hypotheses exist, robust evidence is still lacking.
- Emotion regulation hypothesis finds moderate support
- Memory consolidation in REM sleep is well established
- Threat simulation theory remains controversial
Do Dreams Regulate Our Emotions?
REM sleep and emotional processing are linked, dream content contribution hard to isolate.
- REM sleep deprivation impairs emotional reactivity
- Emotional dreams occur more often after stressful days
- Causality remains unclear
How Reliable Are Our Dream Reports?
Dream reports are retrospective and subject to memory distortions.
- Morning reports underestimate dream frequency
- Immediate reports after awakenings are more accurate
- Social desirability affects content
Hall/Van de Castle Content Analysis?
The most used coding scheme with over 10,000 analyzed dream reports.
- Codes characters, interactions, emotions, settings
- Norm samples from over 500 dreams available
- Inter-rater reliability above 0.85
Using EEG in Dream Research?
Polysomnography enables precise sleep stage classification and measurement.
- REM sleep shows theta waves and limbic activation
- NREM dreams are less vivid
- Awakening studies provided foundational knowledge
What Can Dream Journals Achieve?
Most common ecological method in dream research, prone to selection bias.
- Best results with daily recording
- 90-day journals show stable patterns
- Digital capture improves compliance
Automatic Dream Content Analysis with NLP?
NLP models analyze dream reports, validation against human coding is challenging.
- Word2Vec/BERT achieve 70-80% agreement
- Emotion classification works better
- DreamBank and SDDb enable longitudinal analyses
What Is the SDDb Database?
One of the largest public collections of dream reports with over 25,000 entries.
- Reports from longitudinal and clinical contexts
- Searchable by keywords and demographics
- Basis for computational linguistic analyses
What Kind of Journal Is the IJoDR?
Leading peer-reviewed open-access journal for empirical dream research since 2008.
- Topics: dream content, emotions, lucid dreams
- Freely accessible via Heidelberg University
- Growing publication volume
Which Dream Databases Exist?
Several specialized databases cover the entire field of dream research.
- DreamBank: 22,000+ reports
- PubMed: 8,000+ peer-reviewed studies
- IASD connects researchers worldwide
Emotions in Our Dreams?
Dreams have a strongly negative emotional tone across most cultures.
- 70-80% of dream emotions are negative
- Intensity correlates with stressful daily events
- Anxiety dreams vs clinical nightmares: different etiologies
Stability of Recurring Dream Themes?
Recurring dreams show individual stability but are culturally influenced.
- Most common themes: pursuit, falling, flying
- Cultural differences in specific symbols
- Recurrent nightmares correlate with trauma
Training Lucid Dreams Consciously?
Neurophysiologically measurable and improvable through training, effectiveness still limited.
- Gamma activity (40 Hz) in lucid phases
- MILD technique doubles lucidity rate
- Therapeutic application for nightmares promising