- See also changes related to Consciousness, or pages that link to Consciousness or to this page or whose text .
- Mind : The set of structures and activity states in the brain, body, and environment of a human that enable the physiological activities of thinking and conscious experiencing.
- Philosophy of mind : Philosophical discipline which deals with the nature of, and knowledge of, the mind, the brain and mental functions and phenomena.
- Psychology : The study of systemic properties of the brain and their relation to behaviour.
- Cogito ergo sum : René Descartes' most famous catchphrase: "I think, therefore I am".
- Coma : A profound state of unconsciousness associated with depressed cerebral activity from which the individual cannot be aroused.
- Death : State of thermodynamic equilibrium achieved after the end of life.
- Qualia : Add brief definition or description
- Self-consciousness : The ability to become the object of one's own attention.
- Brain : The core unit of a central nervous system.
- René Descartes : French 17th-century philosopher, mathematician and scientist, author of the Discourse on Method.
- Dissociative disorder : A class of diagnoses that involve a disruption of memory, awareness, identity and/or perception.
- Life extension : Medical and non-medical attempts to slow down or reverse the processes of aging, to extend both the maximum and average lifespan.
- Neocortex : The six-layered outer layer of the mammalian brain.
- Neurobehavioral manifestation : Signs and symptoms of higher cortical dysfunction caused by organic conditions. These include certain behavioral alterations and impairments of skills involved in the acquisition, processing, and utilization of knowledge or information.
- Orch-OR : A speculative theory of consciousness proposed in the mid-1990s by British theoretical physicist Sir Roger Penrose and American anesthesiologist Stuart Hameroff.
- Syncope : Transient loss of consciousness and postural tone caused by diminished blood flow to the brain (i.e., brain ischemia).
- Unconsciousness : Loss of the ability to maintain awareness of self and environment combined with markedly reduced responsiveness to environmental stimuli.