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464 results for "kin selection" — page 10 of 24

Z_2_11 Molecular Biology

Z_2_11 — Genetics of Immunity and MHC Diversity

The major histocompatibility complex (MHC) — known as the human leukocyte antigen (HLA) system in humans — is the most polymorphic gene region in the human genome, encoding cell-surface glycoproteins essential for adapti

major histocompatibility complex MHC HLA human leukocyte antigen adaptive immunity antigen presentation
Z_2_07 Molecular Biology

Z_2_07 — Genetics of Disease Resistance

Infectious disease has been the most powerful selective force shaping the human genome, leaving signatures across thousands of loci. The best-understood example is sickle cell disease (HbS, Glu6Val in HBB): heterozygous

disease resistance natural selection pathogen-driven selection sickle cell malaria resistance HbS
Z_2_23 Verified Molecular Biology

Z_2_23 — Immune System & Immunology

The immune system is a multi-layered defense network that protects organisms against pathogens including bacteria, viruses, fungi, and parasites. It comprises two interconnected arms: innate immunity, which provides rapi

immune system innate immunity adaptive immunity T cells B cells antibodies
Z_2_01 Molecular Biology

Z_2_01 — HLA System & Archaic Immune Inheritance

The Human Leukocyte Antigen (HLA) system is the most polymorphic region of the human genome, encoding cell-surface proteins critical to adaptive immune function. Located on chromosome 6p21.3, the Major Histocompatibility

HLA human leukocyte antigen MHC major histocompatibility complex archaic introgression Denisovan
Z_1_05 Molecular Biology

Z_1_05 — Genomic Imprinting and Parent-of-Origin Effects

Genomic imprinting is an epigenetic phenomenon in which a gene's expression depends on whether it was inherited from the mother or the father — violating the standard Mendelian assumption that both parental copies functi

genomic imprinting parent-of-origin effect epigenetics DNA methylation imprinting control region ICR
Z_4_18 Verified Molecular Biology

Z_4_18 — Protein Misfolding and Prion Diseases

Prion diseases — transmissible spongiform encephalopathies (TSEs) — are fatal neurodegenerative disorders caused by the misfolding and self-propagating aggregation of a normal cellular protein (PrPᶜ) into a pathological

prion protein-misfolding amyloid bse cjd mad-cow-disease
Z_4_10 Verified Molecular Biology

Z_4_10 — Signal Transduction: How Cells Communicate

Signal transduction — the molecular mechanisms by which cells detect, interpret, and respond to external signals (hormones, growth factors, neurotransmitters, cytokines, environmental cues) — is one of the central organi

signal transduction cell signaling receptor kinase second messenger G protein
K_3_09 Consciousness

K_3_09 — Minimal Consciousness and the Threshold of Sentience

Where does consciousness begin? This question — the problem of the threshold of sentience — is one of the most challenging in consciousness studies because it requires identifying what KIND of physical system is minimall

minimal consciousness sentience threshold consciousness markers biological consciousness single cell behavior bacterial cognition
K_3_19 Verified Consciousness

K_3_19 — Electrical Synapses and Gap Junctions in Consciousness

Most neuroscience focuses on chemical synapses, but the brain also uses electrical synapses formed by connexin-36 gap junctions — direct cytoplasmic channels that pass ions and small molecules between neurons. These prov

electrical synapse gap junction connexin pannexin ephaptic coupling neural synchrony
K_3_03 Consciousness

K_3_03 — Memory and Consciousness

Memory and consciousness are deeply intertwined — memory provides the continuity of experience that creates a sense of self persisting through time, while consciousness provides the subjective context within which memori

memory consciousness working memory episodic memory autobiographical memory amnesia
K_1_13 Credible Consciousness

K_1_13 — Enactivism: Consciousness Through Action and Interaction

Enactivism is a radical approach to cognition and consciousness that rejects the traditional computational model of the mind (the brain as information-processing computer operating on internal representations of the exte

enactivism embodied cognition autopoiesis sense-making Varela Thompson
K_4_17 Credible Consciousness

K_4_17 — Plant and Fungal Consciousness: Intelligence without Neurons

The question of whether plants and fungi possess forms of consciousness, intelligence, or cognition has moved from philosophical speculation to active scientific investigation. Plants exhibit sophisticated information pr

plant-intelligence mycorrhizal-network wood-wide-web plant-signaling fungal-cognition phytosemiotics
K_4_16 Credible Consciousness

K_4_16 — Psi Research Meta-Analysis: Parapsychology, Statistical Evidence, and the Replication Debate

Parapsychology — the scientific study of purported psychic phenomena (psi), including telepathy, clairvoyance, precognition, and psychokinesis — has accumulated over a century of experimental research with a complex and

psi parapsychology meta-analysis Ganzfeld precognition remote viewing
K_4_01 Consciousness

K_4_01 — Shamanism, Entheogens & Serpent Visions

Shamanism as a cross-cultural altered-state practice is Tier 1 anthropology (Eliade 1964, Winkelman 2010). Clinical psilocybin and DMT research is Tier 1 (Griffiths 2006/2019, Strassman 2001, Davis 2021). The consistent

shamanism DMT ayahuasca psilocybin Strassman Harner
Y_5_03 Altered States

Y_5_03 — Stigmata, Faith Healing, and Psychosomatic Phenomena

The human body can do things under the influence of belief that should not be physically possible according to conventional medical models. The placebo effect — a "sugar pill" producing measurable physiological changes —

stigmata faith healing psychosomatic placebo effect nocebo spontaneous remission
Y_2_04 Altered States

Y_2_04 — Parapsychology — Experimental Research on Psi Phenomena

Parapsychology is the scientific study of purported psychic phenomena — telepathy, clairvoyance, precognition, and psychokinesis (collectively termed "psi") — using experimental methods. Originating with J.B. Rhine's car

parapsychology psi ESP extrasensory perception Rhine Ganzfeld
K_4_09 Consciousness

K_4_09 — Consciousness, Virtual Reality, and Simulated Environments

Virtual reality (VR) has become one of the most powerful tools for investigating the construction of conscious experience — particularly body ownership, self-location, embodiment, spatial presence, and the boundaries of

virtual reality consciousness VR presence rubber hand illusion body ownership Botvinick Cohen virtual body ownership
K_2_05 Consciousness

K_2_05 — Unconscious Processing

The cognitive unconscious — mental processes that influence behavior, emotion, and decision-making without reaching conscious awareness — is one of the most empirically robust phenomena in psychology and neuroscience. Fa

unconscious processing subliminal perception implicit memory priming blindsight automatic processing
K_2_21 Verified Consciousness

K_2_21 — Transcranial Brain Stimulation: tDCS, TMS, and Deep Brain Stimulation

Transcranial brain stimulation encompasses a family of techniques that modulate neural activity by delivering energy — magnetic pulses, electrical current, or implanted electrodes — to specific brain regions. The three p

transcranial magnetic stimulation TMS transcranial direct current stimulation tDCS deep brain stimulation DBS
K_2_06 Consciousness

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

neurofeedback EEG biofeedback brain training operant conditioning EEG SMR training alpha-theta training