RESEARCH BASE

Search 3,721 documents across 34 fields — every claim tier-rated by evidence

3,721 documents 34 sections 43,623 citations 34,854 keywords indexed 4 evidence tiers

3,633 are the core, quality-scored corpus (34 lettered sections — see How We Work); the remaining 88 are cross-corpus synthesis documents (68 InterDocs, 12 Connections, 8 Theories) also indexed here.

2,532 results for "CI" — page 53 of 127

L_5_07 Verified Genetics & Origins

L_5_07 — Genetics of Speech and Language: Beyond FOXP2

Language is humanity's most distinctive cognitive ability — and identifying its genetic basis has been a central goal of human genetics and neuroscience since the discovery of the KE family and the FOXP2 gene. The KE fam

FOXP2 language genetics speech CNTNAP2 SRPX2 ATP2C2
Y_4_02 Altered States

Y_4_02 — Savant Syndrome and Acquired Genius

Savant syndrome — extraordinary ability coexisting with significant cognitive disability — affects roughly 1 in 10 people with autism and ~1 in 2,000 people with other developmental disabilities or brain injuries. What m

savant syndrome acquired savant traumatic brain injury autistic savant Kim Peek Daniel Tammet
Y_4_17 Verified Altered States

Y_4_17 — Sleep Disorders & Parasomnias

Sleep disorders affect an estimated 50–70 million Americans and up to 45% of the global population, encompassing over 80 distinct conditions classified by the International Classification of Sleep Disorders (ICSD-3, 2014

sleep disorders parasomnias narcolepsy sleepwalking REM behavior disorder sleep terrors
Y_4_04 Altered States

Y_4_04 — Entoptic Phenomena and Phosphene Patterns

This document examines Entoptic Phenomena and Phosphene Patterns, a topic within the Consciousness research area. Key areas of investigation include Defining Entoptic Phenomena, Phosphenes: Light from Within, Heinrich Kl

entoptic phenomena phosphene form constants Heinrich Klüver mescaline Lewis-Williams
Y_4_16 Verified Altered States

Y_4_16 — Hypnagogia: The Threshold State Between Waking and Sleep

Hypnagogia is the transitional state of consciousness experienced during the onset of sleep (waking-to-sleep), characterized by vivid spontaneous imagery, auditory hallucinations, distorted body perception, and loosened

hypnagogia hypnagogic hypnopompic sleep onset threshold consciousness tetris effect
Y_4_22 Credible Altered States

Y_4_22 — Hypnagogic & Hypnopompic States

Hypnagogia (the transitional state between wakefulness and sleep onset) and hypnopompia (the transition from sleep to waking) are naturally occurring altered states of consciousness experienced universally by humans. Cha

hypnagogia hypnopompia sleep onset phosphenes tetris effect sleep paralysis
Y_4_11 Altered States

Y_4_11 — Trance States Across Cultures

Trance — an altered state of consciousness characterized by narrowed or shifted attention, altered sense of self, reduced awareness of external surroundings, and modified responsiveness — is one of the most universal fea

trance ritual trance cross-cultural trance possession trance shamanic trance altered states of consciousness
Y_4_13 Verified Altered States

Y_4_13 — Collective Effervescence and Group Altered States

Collective effervescence — Émile Durkheim's term (The Elementary Forms of Religious Life, 1912) for the heightened emotional energy generated when people gather and act together in coordinated ritual — describes a group

collective effervescence Durkheim group ritual emotional contagion synchrony entrainment
Y_4_05 Altered States

Y_4_05 — Dreams, Dream Incubation, and Oneiric Knowledge

Dreams have been treated as a source of knowledge, prophecy, and divine communication in virtually every civilization. Ancient Mesopotamians maintained professional dream interpreters (šāʾilu) and compiled dream omen com

dream dreaming dream incubation oneiric Asklepion temple sleep
Y_4_21 Credible Altered States

Y_4_21 — Fasting-Induced Altered States

Fasting-induced altered states of consciousness — visionary experiences, euphoria, time distortion, dissociation, and mystical-type experiences produced by prolonged food deprivation — represent one of humanity's oldest

fasting altered states ketosis beta-hydroxybutyrate vision quest asceticism
Y_5_03 Altered States

Y_5_03 — Pineal Gland / Third Eye Across Cultures

The pineal gland sits at the geometric center of the brain and has been called "the third eye" across cultures for millennia. Ancient pine cone motifs appear at the Vatican (Cortile della Pigna), Assyrian reliefs (winged

pineal gland third eye pine cone ajna chakra Eye of Horus DMT
Y_5_10 Credible Altered States

Y_5_10 — Extreme Fasting: Breatharian Claims, Autophagy, and Metabolic States

Extreme fasting — prolonged and severe caloric restriction or complete food abstinence — occupies a unique position at the intersection of contemplative/ascetic practice, metabolic science, and pseudoscientific extremism

fasting autophagy caloric restriction breatharianism inedia metabolic states
Y_5_07 Verified Altered States

Y_5_07 — Phenomenology of Pain and Pain Modulation

Pain — defined by the International Association for the Study of Pain (IASP, revised 2020) as "an unpleasant sensory and emotional experience associated with, or resembling that associated with, actual or potential tissu

pain nociception pain modulation gate control theory Melzack Wall
Y_5_01 Altered States

Y_5_01 — Remote Viewing & Psychic Programs

The U.S. government spent $20M+ over 23 years (1972–1995) investigating psychic phenomena under classified programs known collectively as "Stargate." Research was published in Nature (1974) and IEEE (1976). The program p

remote viewing Stargate SRI CIA DIA Targ
Y_5_17 Speculative Altered States

Y_5_17 — Astral Projection Laboratory Research

Astral projection — the subjective experience of consciousness separating from the physical body and traveling independently — has been reported across virtually all human cultures throughout history, from ancient Egypti

astral projection out-of-body experience OBE Charles Tart Robert Monroe temporo-parietal junction
Y_2_05 Altered States

Y_2_05 — Near-Death Experiences: Cross-Cultural Analysis

Near-death experiences (NDEs) — profound subjective experiences occurring during clinical death, cardiac arrest, or perceived proximity to death — have been reported across virtually all cultures and historical periods.

near-death experience NDE cross-cultural NDE tunnel experience life review being of light out-of-body experience
Y_2_14 Credible Altered States

Y_2_14 — Dying Process Phenomenology: Shared Death Experiences and After-Death Communication

The phenomenology of death and the experiences reported by those who witness the dying process include several distinct categories of altered-state phenomena that extend beyond the well-known near-death experience (NDE).

shared death experience after-death communication deathbed visions grief hallucinations terminal lucidity Moody
Y_2_03 Altered States

Y_2_03 — Reincarnation Research — Stevenson, Tucker, Past-Life Memories

Reincarnation research — the systematic, empirical investigation of claims that individuals (typically young children) possess verified memories of previous lives — represents one of the most methodologically rigorous pr

reincarnation past-life memories Ian Stevenson Jim Tucker birthmarks xenoglossy
Y_2_16 Credible Altered States

Y_2_16 — Near-Death Experience Latest Research

Near-death experiences (NDEs) — the vivid, structured experiences reported by approximately 10–20% of cardiac arrest survivors (including out-of-body perception, tunnel experiences, life reviews, encounters with deceased

near-death experience NDE AWARE study Sam Parnia cardiac arrest consciousness
Y_2_09 Verified Altered States

Y_2_09 — Sleep Paralysis, Hypnagogia, and Liminal States

Sleep paralysis — a temporary inability to move or speak while falling asleep or waking — is one of the most universal and culturally interpreted altered states, experienced by an estimated 7.6% of the general population

sleep paralysis hypnagogia hypnopompia hypnagogic hallucination old hag kanashibari