The process by which a compound body breaks up into simpler constituents; -- said particularly of the action of heat on gaseous or volatile substances; as, the dissociation of the sulphur molecules; the dissociation of ammonium chloride into hydrochloric acid and ammonia.
The breaking up of a compound into its simpler components such as molecules, atoms, or ions. Results from the action of some form of energy on gases and from the action of solvents on substances in solutions.
The splitting up of a molecule into charged ions. For instance, when a pure acid is added to water, its molecules dissociate into hydrogen ions and negative ions. Electrolysis : The process of breaking down a liquid chemically by passing an electric current through it.
process of bond-breaking. For photodissociation, the absorption of a photon produces an excited state which is directly repulsive (for example an antibonding orbital) or in a sufficiently high vibrational state that the molecule is above the dissociation limit.
Dissociation is the process by which a chemical combination breaks up into simpler constituents as a result of either added energy (dissociated by heat), or the effect of a solvent on a dissolved polar compound (electrolytic dissociation). It may occur in the gaseous, solid, or liquid state, or in solution. An example of dissociation is the reversible reaction of hydrogen iodide at high temperatures 2HI(g) H2(g) + I2(g) The term dissociation is also applied to ionisation reactions of acids and bases in water. For example HCN + H2O H2O+ + CN- which is often regarded as a straightforward dissociation into ions HCN H+ + CN
(1) The separation of a molecular entity into two or more molecular entities (or any similar separation within a polyatomic molecular entity). (2) The separation of the constituents of any aggregate of molecular entities. In both senses dissociation is the reverse of association
Dissociation in chemistry and biochemistry is a general process in which complexes, molecules, or salts separate or split into smaller molecules, ions, or radicals, usually in a reversible manner. Dissociation is the opposite of association and recombination.
Mental condition characterized by a loss of the integration of faculties or functions that are normally integrated in consciousness. Can affect memory, sensory modalities, motor functions, cognitive functions, and personal identity or sense of self.
The mental process of disengaging from the stimuli in the external environment and attending to inner stimuli. This is a graded mental process that ranges from normative daydreaming to pathological disturbances that may include exclusive focus on an inner fantasy world, loss of identity, disorientation, perceptual disturbances or even disruptions in identity.
this is a split in the mind in which there can be two independent streams of consciousness occurring at the same time, allowing some thoughts and behaviors to occur simultaneously with others. According to some, dissociation is the foundation of hypnosis - the hypnotized person is able to maintain control of certain thoughts and behaviors, while others are being influenced by the hypnotist.
An ongoing process in which certain information(such as feelings, memories, and physical sensations) is kept apart from other information with which it would normally belogically associated. Dissociation is a psychological defense mechanism that also has psychobiological components. Generally,it is thought to originate in "...a normal process that is initially used defensively by an individual to handle traumatic experiences [that] evolves over time into a maladaptive orpathological process..." (Putnam, 1989, p. 9).
As used in this text, refers to a condition by which certain mental functions are dissociated or "separated" from others, to varying degree; in particular refers to the dissociation of sensory input and emotion from consciousness and memory.
the process whereby some ideas, feelings, or activities lose relationship to other aspects of consciousness and personality and operate automatically or independently. Can also refer to helping a patient dissociate unpleasant feeling from traumatic memories.
The splitting off of clusters of mental contents from conscious awareness, a mechanism central to hysterical conversion and dissociative disorder; the separation of an idea from its emotional significance and affect as seen in the inappropriate affect of schizophrenic patients.
(1) A term used for symptoms when a patient is impaired in one function but relatively unaffected in another. (2) In post-traumatic stress disorder (PTSD), the period of numbness immediately after the trauma in which the sufferer feels estranged, socially unresponsive, and oddly unaffected by the traumatizing event.
In psychology - An unconscious process by which a group of mental processes is separated from the rest of the thought processes, resulting in an independent functioning of these processes and a loss of the usual relationships; for example, a separation of affect from cognition.
A psychological separation of "splitting off"; an intrapsychic defensive process, which operates automatically and unconsciously. Through its operation, emotional significance and affect are separated and detached from an idea, situation, or object.
A mental process involving the disjoining of behaviors, affects, sensations and knowledge that are normally associated in ordinary waking consciousness; separation and fragmentation. The exaggeration of normal subject/object ("self/not-self") differentiation; the perceptual/experiential disincorporation of that which is generally agreed to be (part of) "self" from that which is also generally agreed to be (part of) "self." See text, Chapters 5 and 10. See also, " Altered States of Consciousness," " association," " consciousness," " hallucination," "hypnosis," "regression," " State of Consciousness" and " Transpersonal Consciousness."
The Diagnostic and Statistical Manual of Mental Disorders considers symptoms such as depersonalization, derealization, and psychogenic amnesia as core features of dissociation. However, in the normal population mild dissociative experiences are highly prevalent, with 80% to 90% of the respondents indicating that they experience dissociative experiences at least some of the time.
A process in which a body of awareness (perceptual, memory, physical) becomes separated or blocked from the main center of consciousness; examples are trance-speaking, automatic writing, amnesia, multiple personality, and so on; thought by some to be a psi-conducive state.