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Unconsciousness may occur as the result of traumatic brain injury, brain hypoxia (inadequate oxygen, possibly due to a brain infarction or cardiac arrest), severe intoxication with drugs that depress the activity of the central nervous system (e.g., alcohol and other hypnotic or sedative drugs), severe fatigue, pain, anaesthesia, and other causes.
In medicine, a coma (from the Greek κῶμα koma, meaning deep sleep) is a state of unconsciousness, lasting more than six hours in which a person cannot be awakened, fails to respond normally to painful stimuli, light, sound, lacks a normal sleep-wake cycle and does not initiate voluntary actions.
Prolonged unconsciousness is understood to be a sign of a medical emergency. [3] A deficit in the level of consciousness suggests that both of the cerebral hemispheres or the reticular activating system have been injured. [4] A decreased level of consciousness correlates to increased morbidity (sickness) and mortality (death). [5]
Modern dictionary definitions of the word consciousness evolved over several centuries and reflect a range of seemingly related meanings, with some differences that have been controversial, such as the distinction between inward awareness and perception of the physical world, or the distinction between conscious and unconscious, or the notion ...
A coma is a deep state of prolonged unconsciousness in which a person cannot be awakened, fails to respond normally to painful stimuli, light, or sound, lacks a normal wake–sleep cycle and does not initiate voluntary actions. [1]
Obliviousness may be described as going beyond a mere lack of some level of awareness, and becoming an act of repression of an awareness that should exist. [2] Although an unconscious person may similarly be unaware of things around them, obliviousness "implies not a cessation of all attention but only that directed outwardly", with the oblivious person's attention being "directed inwardly ...
TIL In Japan, the Johatsu, meaning "evaporated people", choose to abandon their current lives - due to family strain, work pressure or any other reason. So-called 'night moving' companies help ...
Damasio's definition of emotion is that of an unconscious reaction to any internal or external stimulus which activates neural patterns in the brain. [1] ‘Feeling’ emerges as a still unconscious state which simply senses the changes affecting the Protoself due to the emotional state.