Psychosis is a generic psychiatric term for mental states in which the components of rational thought and perception are severely impaired. Persons experiencing a psychosis may experience hallucinations, hold delusional beliefs (e.g. paranoid delusions), demonstrate personality changes and exhibit disorganized thinking (see thought disorder). This is often accompanied by lack of insight into the unusual or bizarre nature of such behavior, difficulties with social interaction and impairments in carrying out the activities of daily livi ...

Including:

Psychosis - Overview Psychosis - Psychotic experience
Psychosis - Hallucinations Psychosis - Delusions and paranoia Psychosis - Thought disorder Psychosis - Lack of insight
Psychosis - Medical understanding of psychosis
Psychosis - Psychosis and brain function Psychosis - Cannabis and psychosis Psychosis - Non-psychiatric conditions and psychosis

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Psychosis, Psychosis - Overview, Psychosis - Psychotic experience, Psychosis - Hallucinations, Psychosis - Delusions and paranoia, Psychosis - Thought disorder, Psychosis - Lack of insight, Psychosis - Medical understanding of psychosis, Psychosis - Psychosis and brain function, Psychosis - Cannabis and psychosis, Psychosis - Non-psychiatric conditions and psychosis

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There are a number of possible causes for psychosis. Psychosis may be the result of an underlying mental illness such as bipolar disorder (also known as manic depression) or schizophrenia. Psychosis may also be triggered or exacerbated by severe mental stress and high doses or chronic use of drugs such as amphetamines, LSD, PCP, cocaine or scopolamine. However, incidence of psychosis resulting from a single administration of any drug is rare, although cases have been reported in the medical literature suggesting a person's sensitivities to n ...

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Psychosis, Psychosis - Overview, Psychosis - Psychotic experience, Psychosis - Hallucinations, Psychosis - Delusions and paranoia, Psychosis - Thought disorder, Psychosis - Lack of insight, Psychosis - Medical understanding of psychosis, Psychosis - Psychosis and brain function, Psychosis - Cannabis and psychosis, Psychosis - Non-psychiatric conditions and psychosis

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Amphetamine psychosis is a form of psychosis which can result from amphetamine or methamphetamine use. Typically it appears after large doses or chronic use, although in rare cases some people may become psychotic after relatively small doses. Other chemicals or drugs which similarly increase dopamine function (such as cocaine and L-DOPA) can produce similar psychotic states. Because of this, the term stimulant psychosis is sometimes used in preference. Amphetamine psychosis - Overview. Amphetamine p ...

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Amphetamine psychosis - Overview

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Disruption to the dopamine system has also been strongly linked to psychosis and schizophrenia. Dopamine neurons in the mesolimbic pathway are particularly associated with these conditions. This is partly due to the discovery of a class of drugs called the phenothiazines (which block D2 dopamine receptors) that can reduce psychotic symptoms, and partly due to the finding that drugs such as amphetamine and cocaine (which are known to greatly increase dopamine levels) can cause psychosis. Because of this, most modern antipsychotic m ...

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Dopamine, Dopamine - Biochemistry, Dopamine - Functions of Dopamine in the Brain, Dopamine - Role in Movement, Dopamine - Role in Cognition and Frontal Cortex Function, Dopamine - Role in Pleasure and Motivation, Dopamine - Dopamine and psychosis, Dopamine - Therapeutic use, Dopamine - Major Dopamine Pathways

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Bark Psychosis is a band from Waltham Forest, East London. Graham Sutton is the core of the group, supported by a dynamic roster of musicians.The line up for the seminal album Hex was : Graham Sutton, John Ling, Mark Simnett and Daniel Gish. Current members include Sutton, Colin Bradley, Lee Harris, and others. After several singles and EPs from 1988 to 1994, the band released their first album Hex in 1994. Simon Reynolds of The Wire coined the term post-rock to describe Hex for "using rock instrumentation for non-rock purposes, using guitars as facilitators of timb ...

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Bark Psychosis - Discography
Bark Psychosis - Albums Bark Psychosis - EPs & Singles Bark Psychosis - Compilations

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Disruption to the dopamine system has also been strongly linked to psychosis and schizophrenia. Dopamine neurons in the mesolimbic pathway are particularly associated with these conditions. This is partly due to the discovery of a class of drugs called the phenothiazines (which block D2 dopamine receptors) that can reduce psychotic symptoms, and partly due to the finding that drugs such as amphetamine and cocaine (which are known to greatly increase dopamine levels) can cause psychosis. Because of this, most modern antipsychotic m ...

See also:

Dopamine, Dopamine - Biochemistry, Dopamine - Functions of dopamine in the brain, Dopamine - Role in movement, Dopamine - Role in cognition and frontal cortex function, Dopamine - Role in pleasure and motivation, Dopamine - Dopamine and psychosis, Dopamine - Therapeutic use, Dopamine - Major dopamine pathways

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ADHD psychosis (or ADD psychosis) is a distinctive form of psychosis, identified by Leopold Bellak and his colleagues, which co-occurs with attention-deficit hyperactivity disorder (ADHD) and tends to be treatable with typical ADHD medication such as stimulants (or some antidepressants), but not with conventional or atypical antipsychotic medication. Although this condition does not appear in DSM-IV, and it is not widely recognized, it has been detailed in several academic papers wh ...

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Brief reactive psychosis is the psychiatric term for psychosis which is triggered by extreme stress. The condition usually spontaneously resolves itself within two weeks, and the main goal of treatment is to prevent the patient from harming themself or others. See also. nervous breakdown ...

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In animals, the brain, or encephalon (Greek for "in the head"), acts as the control center of the central nervous system. In most animals, the brain is located in the head close to the primary sensory apparatus and the mouth. While all vertebrate nervous systems have a brain, invertebrate nervous systems may have either a centralized brain or collections of individual ganglia. The brain is an extremely complex organ; for example, the human brain is a collection of 100 billion neurons, each linked with up to 25,000 others [1]. T ...

Including:

Brain - Mind and brain Brain - History Brain - Modern neuroscience Brain - Comparative anatomy
Brain - Invertebrates Brain - Vertebrates
Brain - Neurobiology
Brain - Histology Brain - Function Brain - Brain pathology
Brain - The study of the brain
Brain - Fields of study Brain - Methods of observation Brain - Other matters
Brain - Brain as food

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The term brain stem refers to a composite substructure of the brain. It includes the midbrain, the pons and the medulla oblongata. Some authors include the cerebellum and/or parts of the diencephalon. A discussion of differences in the use of this term is presented in Anthoney (1994). The lower part of the brain stem is the medulla oblongata, grossly comprising the medullary pyramids and the olivary bodies or olives. The pons is a knob above the medulla. The reticular activating system is situated in between the medulla and mete ...

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Brain stem - Function

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Brain cells incude mostly neurons and glial cells. Neurons perform the processing and storage of information involved in brain function. Neurons are cells that are adapted to carrying the electrical signals called action potentials that are the basic building blocks of information transmission in the brain. They communicate to one another via synapses. Glia function to support and provide nutrition to neurons. Other cells in the brain include epithelial cells that make up the lining of blood vessels. Category:

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Concussion, or mild traumatic brain injury (MTBI), is the most common and least serious type of brain injury. A milder type of diffuse axonal injury, concussion involves a transient loss of mental function. It can be caused by acceleration or deceleration forces, by a direct blow, or by penetrating injuries. Concussion of the brain - Pathophysiology. The brain floats within the skull surrounded by cerebrospinal fluid (CSF), one of the functions of which is to cushion the brain from light bounc ...

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Concussion of the brain - Pathophysiology Concussion of the brain - Symptoms Concussion of the brain - Grades Concussion of the brain - Lasting effects Concussion of the brain - Second Impact Syndrome

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Brain plasticity refers to the changes that occur in the organisation of the brain, and in particular changes that occur to the location of specific information processing functions, as a result of the effect of experience. The term cortical plasticity is more commonly used, however there is no particular restriction of the phenomenon to the cortex. A common and surprising consequence of plasticity is that the location of a given funct ...

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Plasticity brain - Brain plasticity and cortical maps Plasticity brain - Brain plasticity during operation of brain-machine interfaces

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Brain death is defined as a complete and irreversible cessation of brain activity. Absence of apparent brain function is not enough. Evidence of irreversibility is also required. Brain-death is often confused with the state of vegetation. Traditionally, death has been defined as the cessation of all body functions, including respiration and heartbeat. Since it became possible to revive some people after a period without respiration, heartbeat, or other visible signs of life, as well as to maintain respiration and blood f ...

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Brain fingerprinting is a technique that measures recognition of familiar stimuli by measuring electrical brain wave responses to words, phrases, or pictures that are presented on a computer screen. Brain fingerprinting was invented by Dr. Lawrence Farwell. The theory is that the suspect's reaction to the details of an event or activity will reflect if the suspect had prior knowledge of the event or activity. This test uses the Memory and Encoding Related Multifaceted Electroencephalographic Response to detect familiarity reaction. It ...

Including:

Brain fingerprinting - Background and terminology
Brain fingerprinting - Justification
Brain fingerprinting - Criticisms
Brain fingerprinting - Ethical considerations Brain fingerprinting - Conflicting evidence
Brain fingerprinting - Current uses and research

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A brain tumour is any intracranial mass created by an abnormal and uncontrolled growth of cells either normally found in the brain itself: neurons, glial cells (astrocytes, oligodendrocytes, ependymal cells), lymphatic tissue, blood vessels), in the cranial nerves (myelin producing Schwann cells), in the brain envelopes (meninges), skull, pituitary and pineal gland, or spread from cancers primarily located in other organs (metastatic tumors). Primary (true) brain tumours are commonly located in the posterior cranial fossa in children and in the anterior two-thirds of the cerebral hemispheres in adult ...

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Brain tumor - Causes Brain tumor - Classification Brain tumor - Symptoms Brain tumor - Diagnosis Brain tumor - Treatment and Prognosis

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Split-brain is a lay term to describe the result when the corpus callosum connecting the two halves of the brain is severed to some degree. The surgical operation to produce this condition is called corpus callosotomy. It is rarely performed, usually to treat epilepsy; people with generalized seizures who injure themselves during falls may have less violent seizures, and hence less ...

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Split-brain - Also see:

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Brain damage or brain injury is the destruction or degeneration of brain cells. Brain damage may occur due to a wide range of conditions, illnesses, or injuries. Possible causes of widespread (diffuse) brain damage include prolonged hypoxia (shortage of oxygen), poisoning, infection, and neurological illness. Common causes of focal or localized brain damage are physical trauma (traumatic brain injury), stroke, aneurysm, or neurological illness. The extent and effect of brain injury is often assessed by the use of neurological examinatio ...

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The human brain goes through several large-scale changes as the individual progresses from embryo through to old age. Aging brain - Pre-natal development. Developmental neurobiology concerns itself with the development of the brain. The process of neurogenesis populates the brain, then programmed cell death cuts the growing brain down to size. Ageing, Life extension, Senescence Aging brain - Adolescence. During adolescence the brain goes through ...

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Aging brain - Pre-natal development Aging brain - Adolescence Aging brain - Aging

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