UnconsciousnessUnconsciousness is a state in which a living individual exhibits a complete, or near-complete, inability to maintain an awareness of self and environment or to respond to any human or environmental stimulus. 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.
Psyche (psychology)In psychology, the psyche ˈsaɪki is the totality of the human mind, conscious and unconscious. Psychology is the scientific or objective study of the psyche. The word has a long history of use in psychology and philosophy, dating back to ancient times, and represents one of the fundamental concepts for understanding human nature from a scientific point of view. The English word soul is sometimes used synonymously, especially in older texts. The basic meaning of the Greek word ψυχή (psyche) was "life".
Pleasure principle (psychology)In Freudian psychoanalysis, the pleasure principle (Lustprinzip) is the instinctive seeking of pleasure and avoiding of pain to satisfy biological and psychological needs. Specifically, the pleasure principle is the animating force behind the id. Epicurus in the ancient world, and later Jeremy Bentham, laid stress upon the role of pleasure in directing human life, the latter stating: "Nature has placed mankind under the governance of two sovereign masters, pain and pleasure".
ConscienceConscience is a cognitive process that elicits emotion and rational associations based on an individual's moral philosophy or value system. Conscience stands in contrast to elicited emotion or thought due to associations based on immediate sensory perceptions and reflexive responses, as in sympathetic central nervous system responses. In common terms, conscience is often described as leading to feelings of remorse when a person commits an act that conflicts with their moral values.
Being and NothingnessBeing and Nothingness: An Essay on Phenomenological Ontology (L'Être et le néant : Essai d'ontologie phénoménologique), sometimes published with the subtitle A Phenomenological Essay on Ontology, is a 1943 book by the philosopher Jean-Paul Sartre. In the book, Sartre develops a philosophical account in support of his existentialism, dealing with topics such as consciousness, perception, social philosophy, self-deception, the existence of "nothingness", psychoanalysis, and the question of free will.
Ego psychologyEgo psychology is a school of psychoanalysis rooted in Sigmund Freud's structural id-ego-superego model of the mind. An individual interacts with the external world as well as responds to internal forces. Many psychoanalysts use a theoretical construct called the ego to explain how that is done through various ego functions. Adherents of ego psychology focus on the ego's normal and pathological development, its management of libidinal and aggressive impulses, and its adaptation to reality.
Reality principleIn Freudian psychology and psychoanalysis, the reality principle (Realitätsprinzip) is the ability of the mind to assess the reality of the external world, and to act upon it accordingly, as opposed to acting according to the pleasure principle. The reality principle is the governing principle of the actions taken by the ego, after its slow development from a "pleasure-ego" into a "reality-ego".
Victor HugoVictor-Marie Hugo (viktɔʁ maʁi yɡo; 26 February 1802 – 22 May 1885) was a French Romantic writer and politician. During a literary career that spanned more than sixty years, he wrote in a variety of genres and forms. He is considered to be one of the greatest French writers of all time. His most famous works are the novels The Hunchback of Notre-Dame (1831) and Les Misérables (1862). In France, Hugo is renowned for his poetry collections, such as Les Contemplations (The Contemplations) and La Légende des siècles (The Legend of the Ages).
Displacement (psychology)In psychology, displacement (Verschiebung) is an unconscious defence mechanism whereby the mind substitutes either a new aim or a new object for things felt in their original form to be dangerous or unacceptable. The concept of displacement originated with Sigmund Freud. Initially he saw it as a means of dream-distortion, involving a shift of emphasis from important to unimportant elements, or the replacement of something by a mere illusion. Freud called this “displacement of accent.
HypnagogiaHypnagogia is the transitional state from wakefulness to sleep, also defined as the waning state of consciousness during the onset of sleep. Its opposite state is described as hypnopompia the transitional state from sleep into wakefulness. Mental phenomena that may occur during this "threshold consciousness" phase include hypnagogic hallucinations, lucid dreaming, and sleep paralysis. The word hypnagogia is sometimes used in a restricted sense to refer to the onset of sleep, and contrasted with hypnopompia, Frederic Myers's term for waking up.
