A Glossary
A.1 Purpose
This glossary provides short reference definitions for key terms used throughout the book. The terms are organized alphabetically and are intended to help readers move between biology, consciousness studies, philosophy of mind, origin-of-life research, artificial intelligence, and ethics.
A.2 Glossary of Terms
Abiogenesis The natural process by which life arises from non-living matter. In origin-of-life research, abiogenesis refers to the transition from prebiotic chemistry to self-maintaining, reproducing, evolving biological systems.
Access consciousness A form of consciousness in which information is available for reasoning, verbal report, decision-making, memory, and behavioural control. Access consciousness is often contrasted with phenomenal consciousness, which concerns subjective experience itself.
Active inference A process associated with the Free Energy Principle in which organisms act on the world to reduce uncertainty and make sensory input conform to internal predictions. Active inference treats perception and action as interconnected forms of biological regulation.
Affect The felt dimension of experience associated with valence, mood, emotion, pleasure, discomfort, attraction, avoidance, and bodily significance. Affect is important in theories that link consciousness to value and organismic need.
Agency The capacity of a system to act in relation to its own goals, needs, or self-maintenance. In minimal biology, agency may refer to adaptive self-directed activity without implying reflective intention.
Analytic idealism A contemporary form of idealism, associated especially with Bernardo Kastrup, which treats universal consciousness as the sole ontological primitive and views individual minds as dissociated expressions within it.
Anaesthesia A medically induced state in which consciousness, pain perception, or responsiveness may be reduced or eliminated. Anaesthesia research is important for identifying neural and physiological conditions associated with conscious experience.
Anthropic principle The observation that the universe appears compatible with the existence of observers because only such a universe could be observed by beings like us. Stronger interpretations suggest deeper links between consciousness and cosmic structure.
Artificial consciousness The possible existence of consciousness in artificial systems such as computers, robots, artificial agents, or artificial life forms. The debate depends on whether consciousness is biological, functional, informational, or substrate-independent.
Artificial intelligence Computational systems capable of performing tasks associated with intelligence, such as language processing, pattern recognition, planning, learning, or decision-making. AI raises questions about whether intelligence can exist without consciousness.
Artificial life The study or creation of systems that display life-like properties, such as reproduction, evolution, adaptation, self-organization, or metabolism-like processes, in digital, robotic, chemical, or synthetic biological media.
Assembly theory A framework for measuring the complexity of objects, especially molecules, by estimating the number of steps required to assemble them from simpler components. It has been used in discussions of life detection and molecular complexity.
Attention Schema Theory A theory proposed by Michael Graziano in which consciousness is the brain’s simplified model of its own attention. The brain represents itself as aware because it models attention in order to control it.
Autocatalytic set A collection of molecules in which members of the set catalyze the formation of other members. Autocatalytic sets are important in origin-of-life theories because they provide models of self-sustaining chemical organization.
Autopoiesis Self-production. A concept developed by Humberto Maturana and Francisco Varela to describe living systems that continuously produce and maintain their own organization and boundaries.
Basal cognition Cognitive-like capacities found in organisms or biological systems without nervous systems, such as sensing, memory, adaptation, learning, and problem-solving in cells, plants, fungi, or simple organisms.
Biosemiotics The study of signs, codes, interpretation, and meaning-making in living systems. Biosemiotics treats life as fundamentally semiotic, involving signals that matter to organisms.
Biological naturalism John Searle’s view that consciousness is a real biological phenomenon caused by brain processes and realized in brain structures. It rejects both substance dualism and the idea that consciousness is merely computation.
Biological meaning The organism-relative significance of environmental conditions, signals, or internal states. For a living system, nutrients, toxins, damage, and opportunities are not neutral; they matter to the organism’s continuation.
Cambrian explosion A period in evolutionary history marked by a rapid diversification of animal body plans and sensory-motor systems. It is often discussed in relation to the evolution of nervous systems and complex behaviour.
Cephalization The evolutionary concentration of sensory organs and nervous tissue toward the front end of an organism. Cephalization is associated with directional movement, predation, and more centralized information processing.
Chinese Room argument John Searle’s thought experiment arguing that symbol manipulation alone does not produce understanding. It is often used to challenge the claim that computation is sufficient for consciousness.
Cognition Processes involving sensing, information processing, memory, learning, decision-making, and adaptive behaviour. Cognition does not necessarily imply consciousness.
Cognitive closure The idea that human minds may be unable to understand certain problems because of limits in our cognitive architecture. In consciousness studies, it is associated with mysterian views.
Combination problem A major challenge for panpsychism: how do many tiny or simple experiences combine into one unified macro-experience, such as a human mind?
Computational functionalism The view that mental states, including possibly consciousness, are defined by computational roles rather than by biological substrate. This view supports the possibility of machine consciousness.
Consciousness Subjective experience or awareness. In this book, consciousness includes the question of “what it is like” to be a system, while also including debates about access, self-awareness, sentience, and reflective thought.
Consciousness field A proposed non-material field-like reality through which consciousness organizes, relates, or manifests matter, life, and mind. In Taheri’s framework, consciousness fields are not physical forces, electromagnetic fields, frequencies, or ordinary information fields, but are understood as non-material organizing realities.
Consciousness-first theories Theories that treat consciousness as fundamental or prior to matter and life. These include forms of idealism, panpsychism, cosmopsychism, dual-aspect monism, and process philosophy.
Constitutive panpsychism A form of panpsychism in which macro-consciousness is thought to be built from or constituted by micro-consciousness at more basic levels of reality.
Cosmopsychism The view that the universe as a whole is the fundamental conscious entity and that individual minds are derived from, or differentiated within, cosmic consciousness.
Decomposition problem A challenge for cosmopsychism: if the universe as a whole is conscious, how does that cosmic consciousness divide or differentiate into individual conscious subjects?
Dissipative structure An organized system maintained by flows of energy and matter far from thermodynamic equilibrium. Dissipative structures are important in theories of self-organization and the origin of life.
Dual-aspect monism The view that reality is one, but has both mental and physical aspects. Mind and matter are not separate substances but two aspects of a deeper underlying reality.
Embodiment The idea that cognition and consciousness are shaped by the body’s structure, needs, movement, perception, and vulnerability. Embodied theories reject the view of mind as detached computation.
Emergence The appearance of higher-level properties from lower-level interactions. In consciousness studies, emergence refers to the possibility that subjective experience arises from biological or neural organization.
Emergentism The view that consciousness emerges from complex physical or biological systems, especially brains. Emergentist theories usually support the life-first position.
Enactivism A view in cognitive science and philosophy in which cognition arises through the active engagement of a living organism with its environment. Enactivism emphasizes embodiment, action, and sense-making.
Epigenetic memory A form of biological memory involving changes in gene expression that do not alter the DNA sequence itself. Epigenetic processes can preserve traces of past conditions in cells and organisms.
Explanatory gap The difficulty of explaining why physical, biological, or neural processes should give rise to subjective experience. The explanatory gap is closely related to the hard problem.
Fine-tuning The observation that certain physical constants appear to fall within ranges compatible with complex chemistry, stars, planets, and life. Fine-tuning is often discussed in relation to the anthropic principle.
Free Energy Principle A theoretical framework associated with Karl Friston. It proposes that living systems maintain themselves by minimizing uncertainty or free energy through perception, action, and learning.
Functionalism The view that mental states are defined by their functional roles rather than by their material substrate. Functionalism supports the possibility that consciousness could be realized in non-biological systems.
Global Workspace Theory A theory associated with Bernard Baars in which consciousness occurs when information is globally broadcast across a cognitive system, making it available for memory, reasoning, report, and action.
Global Neuronal Workspace A neurobiological version of Global Workspace Theory, associated with Stanislas Dehaene and Jean-Pierre Changeux. It emphasizes large-scale neural ignition and prefrontal-parietal networks.
Hard problem of consciousness David Chalmers’ term for the problem of explaining why and how physical processes give rise to subjective experience.
Hard transition problem The problem of identifying when, where, and how biological information processing first became subjective experience in evolutionary history.
Higher-order theory A theory of consciousness in which a mental state becomes conscious when it is represented by a higher-order thought or perception. These theories link consciousness to self-monitoring.
Hylozoism An ancient view that matter is alive or that life is present throughout nature. It appears in some early Greek philosophical traditions.
Idealism The view that mind or consciousness is ontologically primary and that matter is an appearance, structure, or representation within consciousness.
Information A broad concept referring to pattern, difference, signal, or reduction of uncertainty. In this book, information is discussed in relation to life, meaning, self-organization, and consciousness.
Integrated Information Theory A theory associated with Giulio Tononi that defines consciousness in terms of integrated information, represented by Φ. IIT treats consciousness as intrinsic causal structure.
Intentionality The “aboutness” or directedness of mental states. A belief, perception, or desire is intentional because it is about something.
Life-first position The view that life emerged first and consciousness appeared later through biological evolution, especially through nervous systems and brains.
Meaning The significance of information for a system. In biology, meaning may refer to how signals matter to an organism’s self-maintenance, survival, or action.
Metabolism The network of chemical processes by which living systems transform energy and matter to maintain themselves. Metabolism is central to many definitions of life.
Minimal cognition Basic forms of sensing, memory, learning, and adaptive response that may occur in simple organisms or systems without nervous systems.
Minimal selfhood A basic form of selfhood grounded in the distinction between organism and environment. It does not require reflective self-awareness but involves self-maintenance and organismic perspective.
Multiple realizability The idea that the same mental or functional state could be realized in different physical substrates, such as biological neurons, silicon, or other media.
Mysterianism The view that the problem of consciousness may be beyond human cognitive capacity to solve, even if it has a real explanation.
Nagel’s question Thomas Nagel’s famous formulation: “What is it like to be a bat?” It points to the subjective character of consciousness and the difficulty of understanding another being’s experience from the outside.
Neural correlates of consciousness The minimal neural mechanisms associated with a specific conscious experience. NCC research seeks to identify the brain processes necessary or sufficient for conscious states.
Neural Darwinism Gerald Edelman’s theory that neural groups are selected and stabilized through development and experience, with re-entrant processing playing a key role in consciousness.
Neutral monism The view that mind and matter are both manifestations of a more fundamental neutral reality that is neither purely mental nor purely physical.
Neurophenomenology Francisco Varela’s proposed method for linking first-person reports of experience with third-person neuroscience.
Nociception The detection of harmful or potentially damaging stimuli by nervous systems. Nociception is not identical to felt pain, though it may contribute to pain experience.
Non-quantum consciousness field theory A consciousness-first framework that treats consciousness as fundamental or field-like without reducing it to quantum mechanics. Such theories may challenge materialist explanations of consciousness while remaining distinct from quantum theories such as Orch-OR.
Ontological idealism The metaphysical view that only consciousness or mind ultimately exists, and that matter is an appearance within consciousness.
Orchestrated Objective Reduction A quantum theory of consciousness proposed by Roger Penrose and Stuart Hameroff. It suggests that consciousness arises from orchestrated quantum processes in microtubules.
Panpsychism The view that consciousness or proto-consciousness is a fundamental and ubiquitous feature of reality.
Phenomenal consciousness Subjective experience itself: what it is like to see, feel, hear, suffer, think, or exist from a first-person perspective.
Phi The symbol Φ used in Integrated Information Theory to represent the degree of integrated information in a system.
Physicalism The view that everything that exists is physical, and that consciousness is ultimately a physical phenomenon or dependent on physical processes.
Predictive processing A framework in which the brain is understood as a prediction machine that minimizes prediction error by updating internal models and acting on the world.
Process philosophy A philosophical tradition, associated especially with Alfred North Whitehead, that treats reality as composed of processes, events, or occasions of experience rather than static substances.
Proto-consciousness A minimal or precursor form of consciousness. The term is often used cautiously to refer to possible pre-reflective, pre-personal, or very simple experiential properties.
Qualia The subjective qualities of experience, such as the redness of red, the painfulness of pain, or the taste of sweetness.
Quantum biology The study of quantum effects in biological systems, such as photosynthesis, magnetoreception, enzyme catalysis, and possibly other biological processes.
Quantum consciousness A broad term for theories that connect consciousness to quantum processes. Some versions are serious but speculative; others are vague or unsupported.
Recurrent Processing Theory A theory associated with Victor Lamme in which consciousness arises from recurrent or feedback processing in neural systems.
Re-entry A concept associated with Gerald Edelman referring to reciprocal signaling among distributed neural areas. Re-entry is proposed to help integrate perception and consciousness.
Relational ontology A view in which beings are understood primarily through relationships rather than as isolated substances. Many Indigenous and ecological perspectives emphasize relational ways of understanding life and moral status.
Russellian monism A view inspired by Bertrand Russell’s insight that physics describes structure and relations but not the intrinsic nature of matter. Some versions identify consciousness with the intrinsic nature of physical reality.
Self-organization The spontaneous emergence of order from interactions among parts, without external design or centralized control.
Sentience The capacity for subjective experience, especially pleasure, pain, suffering, or felt well-being. Sentience is often treated as a minimum basis for moral consideration.
Simulation hypothesis The idea that reality may be a simulation or computational structure. In consciousness debates, it raises questions about whether simulated beings could be conscious.
Somatic marker hypothesis Antonio Damasio’s theory that bodily and emotional signals help guide decision-making and are central to consciousness and selfhood.
Strange loop A self-referential hierarchical system, associated with Douglas Hofstadter, in which levels loop back on themselves and create a form of self-reference.
Subjective experience Experience as lived from the first-person point of view. It is the central feature of phenomenal consciousness.
Substance dualism The view that mind and body are fundamentally different substances. Cartesian dualism is the most famous version.
Substrate dependence The view that consciousness requires a particular material substrate, such as biological neurons or living tissue.
Substrate independence The view that consciousness depends on functional organization rather than material substrate and could, in principle, be realized in silicon or other media.
Taheri’s T-Consciousness Framework A consciousness-first framework associated with Mohammad Ali Taheri. It proposes that consciousness is primary, non-material, and not produced by matter or the brain. In this view, matter, life, and individual consciousness arise within, through, or by means of T-Consciousness and consciousness fields. The framework supports a consciousness-first interpretation of the life-consciousness relationship.
T-Consciousness Taheri’s term for a fundamental, non-material form of consciousness that is not reducible to matter, energy, frequency, or neural activity. T-Consciousness is treated as a primary organizing reality rather than as a late product of biological evolution.
Teleology Explanation in terms of purpose, goal, or end. Modern biology often avoids strong teleology but uses goal-like language when describing organismic regulation.
Thalamocortical loops Reciprocal connections between the thalamus and cortex that are important in wakefulness, sensory integration, attention, and consciousness.
Turing Test Alan Turing’s proposed behavioural test of machine intelligence, based on whether a machine can converse indistinguishably from a human. It tests performance, not necessarily consciousness.
Vitalism The historical view that living systems require a special life-force beyond ordinary physical and chemical processes. Modern biology generally rejects vitalism, though debates about life and consciousness sometimes revisit related themes.
Weak emergence Emergence in which higher-level properties arise from lower-level processes and are in principle explainable by them.
Strong emergence Emergence in which higher-level properties are genuinely novel and not fully deducible from lower-level descriptions, even in principle.
World-directedness The way living or conscious systems are oriented toward features of their environment as relevant, meaningful, threatening, useful, or desirable.
Zombie A philosophical thought experiment involving a being physically or behaviourally identical to a conscious being but lacking subjective experience. Zombies are used to discuss the gap between function and phenomenology.