RESEARCH BASE
Search 3,721 documents across 34 fields — every claim tier-rated by evidence
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.
3,697 results for "vitamin D" — page 107 of 185
K_1_09 — Philosophical Zombies and the Hard Problem
The philosophical zombie (p-zombie) thought experiment, formalized by David Chalmers (1996), asks: Could there exist a being physically and functionally identical to a conscious human — identical atom for atom, processin
K_1_12 — Orchestrated Objective Reduction: Penrose-Hameroff Theory Deep Dive
Orchestrated Objective Reduction (Orch-OR) is a theory of consciousness proposed by mathematical physicist Sir Roger Penrose (b. 1931, Nobel Prize in Physics 2020) and anesthesiologist Stuart Hameroff (b. 1947), first ar
K_4_19 — Plant Bioelectricity and Distributed Cognition
Plants generate, propagate, and respond to electrical signals via mechanisms that are biophysically homologous to neuronal action potentials, despite lacking a brain or central nervous system. Action potentials in Mimosa
K_4_06 — Collective Trauma, Cultural Memory, and Intergenerational Transmission
Collective trauma — the psychological impact of catastrophic events on entire communities, nations, or peoples — and its intergenerational transmission across generations is one of the most important intersections of psy
K_4_20 — Non-Neural Learning: Slime Molds, Plants, Bacterial Adaptation
Learning — modifying behavior based on experience — was long thought to require a nervous system. The last twenty years of basal-cognition research have empirically falsified this assumption. Single-celled slime molds (P
K_4_14 — Consciousness and Quantum Biology: Photosynthesis, Navigation, Smell
Quantum biology — the study of quantum mechanical effects playing functional roles in biological processes — has emerged as one of the most exciting interdisciplinary fields of the 21st century, with direct implications
K_2_04 — Attention and Awareness
Attention and awareness are intimately linked yet dissociable aspects of consciousness. Attention — the selective processing of some information at the expense of other information — is a fundamental bottleneck in human
K_2_15 — Glial Cells and the Tripartite Synapse: The Brain's Other Half
Glial cells (neuroglia) — comprising astrocytes, oligodendrocytes, microglia, and NG2 glia in the central nervous system, plus Schwann cells and satellite cells in the peripheral nervous system — constitute approximately
K_2_17 — Brain-Computer Interfaces: Neural Engineering, Neuroprosthetics, and the Brain-Machine Frontier
Brain-computer interfaces (BCIs) are systems that establish a direct communication pathway between the brain's electrical activity and external devices, bypassing normal neuromuscular channels. The concept was formalized
K_2_06 — Neurofeedback and Brain Training
Neurofeedback — the real-time display of brain activity (typically EEG) to enable individuals to learn self-regulation of neural dynamics through operant conditioning — has been investigated since the pioneering work of
K_2_01 — Split-Brain Research and Divided Consciousness
Split-brain research — the study of patients whose corpus callosum has been surgically severed to treat intractable epilepsy — stands as one of neuroscience's most philosophically consequential experimental programs. Rog
K_2_22 — Voltage-Gated Ion Channels and Neural Excitability
Voltage-gated ion channels are transmembrane proteins whose conformation depends on membrane potential, opening a selective pore for Na⁺, K⁺, Ca²⁺, or Cl⁻ when voltage thresholds are crossed. They are the molecular engin
K_2_16 — Optogenetics: Light-Controlled Neural Circuits
Optogenetics is a biological technique that uses genetically encoded light-sensitive proteins (opsins) to control the activity of specific neurons with millisecond precision using light. Developed primarily by Karl Deiss
K_2_14 — Brain Lateralization and Consciousness: The Divided Brain
Hemispheric lateralization — the functional specialization of the two cerebral hemispheres — is one of the most robust findings in neuroscience and has profound implications for understanding consciousness. The left hemi
K_2_02 — Phantom Limb, Body Schema, and Embodied Consciousness
Phantom limb phenomena — the vivid perception of a limb that has been amputated — provide a unique window into the neural construction of bodily self-awareness and the relationship between consciousness and embodiment. F
K_2_08 — The Binding Problem in Consciousness
The binding problem asks how the brain creates unified, coherent conscious experiences from the distributed, specialized processing activity of millions of neurons across separate brain regions. When you see a red ball r
K_5_02 — Pain, Consciousness, and the Nature of Suffering
Pain is one of the most philosophically revealing phenomena in consciousness studies: it is simultaneously a sensory detection system, an emotional experience, a cognitive evaluation, and a social communication — and the
K_5_19 — Mantra: Sacred Sound, Repetition, and Consciousness
Mantra — from the Sanskrit man (mind) + tra (instrument/tool) — refers to sacred syllables, words, or phrases repeated as a meditative, devotional, or ritual practice. Originating in the Vedic tradition (c. 1500–500 BCE)
K_5_17 — Neuroplasticity, Cortical Reorganization, and Brain Self-Repair
Neuroplasticity — the brain's ability to reorganize its structure, function, and connections in response to experience, injury, or environmental demand — has transformed neuroscience from a static model ("the adult brain
K_5_09 — Consciousness and Time Perception: How the Brain Creates Now
Time is perhaps the most intimate dimension of consciousness: every conscious experience occurs in time, and our sense of temporal flow — the feeling that time "passes," that the present moment is real and moving forward
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