Dopamine - Role in Movement. Dopamine is critical to the way the brain controls our movements and is a crucial part of the basal ganglia motor loop. Shortage of dopamine, particularly the death of dopamine neurons in the nigrostriatal pathway, causes Parkinson's disease, in which a person loses the ability to execute smooth, controlled movements. D ...

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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

Read more here: » Dopamine: Encyclopedia II - Dopamine - Functions of Dopamine in the Brain

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

Read more here: » Dopamine: Encyclopedia II - Dopamine - Functions of dopamine in the brain

Levodopa is a dopamine precursor used to treat Parkinson's disease. It is typically co-administered with an inhibitor of peripheral catechol-O-methyl transferase, such as carbidopa (co-careldopa) or benserazide (co-beneldopa). Dopamine is also used as an inotropic drug in patients with shock to increase cardiac output and blood pressure. ...

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

Read more here: » Dopamine: Encyclopedia II - Dopamine - Therapeutic use

Levodopa is a dopamine precursor used to treat Parkinson's disease. It is typically co-administered with an inhibitor of peripheral catechol-O-methyl transferase, such as carbidopa (co-careldopa) or benserazide (co-beneldopa). Dopamine is also used as an inotropic drug in patients with shock to increase cardiac output and blood pressure. ...

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

Read more here: » Dopamine: Encyclopedia II - Dopamine - Therapeutic use

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

Read more here: » Dopamine: Encyclopedia II - Dopamine - Dopamine and psychosis

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

Read more here: » Psychosis: Encyclopedia - Psychosis

Dopamine has the chemical formula (C6H3(OH)2-CH2-CH2-NH2). Its chemical name is 4-(2-aminoethyl)benzene-1,2-diol and it is abbreviated "DA." As a member of the catecholamine family, dopamine is a precursor to epinephrine (adrenaline) and norepinephrine (noradrenaline) in the biosynthetic pathways for these neurotransmitters. Arvid Carlsson won a share of the 2000 Nobel Prize in Physiology or Medicine for showing that dopamine is not just a precursor ...

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

Read more here: » Dopamine: Encyclopedia II - Dopamine - Biochemistry

Psychosis is considered by mainstream psychiatry to be a symptom of severe mental illness, but not a diagnosis in itself. Although it is not exclusively linked to any particular psychological or physical state, it is particularly associated with schizophrenia, bipolar disorder (manic depression) and severe clinical depression. There are also several physical circumstances that can induce a psychotic state, including electrolyte disorder, urinary tract infections in the elderly, pain syndromes, drug toxicity, and drug withdrawal (especially a ...

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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

Read more here: » Psychosis: Encyclopedia II - Psychosis - Overview

A psychotic episode can be significantly coloured by mood. For example, people experiencing a psychotic episode in the context of depression may experience persecutory or self-blaming delusions or hallucinations, while people experiencing a psychotic episode in the context of mania may form grandiose delusions or have an experience of deep religious significance. Although usually distressing and regarded as an illness process, some people who experience psychosis find beneficial aspects and value the experience or revelations that stem from it.

See also:

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

Read more here: » Psychosis: Encyclopedia II - Psychosis - Psychotic experience

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), and 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 ...

See also:

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

Read more here: » Psychosis: Encyclopedia II - Psychosis - Medical understanding of psychosis

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 ...

See also:

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

Read more here: » Psychosis: Encyclopedia II - Psychosis - Medical understanding of psychosis

Substantia nigra - Anatomy. The pars compacta contains densely-packed neurons (brain cells) which, in humans, are coloured black by the pigment neuromelanin. This pigmentation is visible as a distinctive black stripe in brain sections and is the source of the name given to this area. The majority of these neurons send their axons along the nigrostriatal pathway to the striatum where they release the neurotransmitter dopamine. ...

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Substantia nigra, Substantia nigra - Pars compacta, Substantia nigra - Anatomy, Substantia nigra - Function, Substantia nigra - Pathology, Substantia nigra - Pars reticulata, Substantia nigra - Anatomy, Substantia nigra - Function, Substantia nigra - Pathology

Read more here: » Substantia nigra: Encyclopedia II - Substantia nigra - Pars compacta

Scientists have long accepted that there is a biological basis for drug addiction, though the exact mechanisms responsible are only now being identified. It is believed that addictive substances create dependence in the user by changing the brain's reward functions, located in the mesolimbic dopamine system—the part of the brain that reinforces certain behaviors such as eating, sexual intercourse, exercise, and social interaction. Addictive substances, through various means and to different degrees, cause the synapses of this system to flood with excessive amounts of dopamine, creati ...

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Drug addiction, Drug addiction - The basis for addiction, Drug addiction - Evolutionary psychology view of addiction, Drug addiction - The chemicals responsible, Drug addiction - Mechanisms of effect, Drug addiction - Recovery from drug addiction, Drug addiction - Medical definitions, Drug addiction - Drugs considered to be addictive Some may be debatable, Drug addiction - Addiction and drug control legislation, Drug addiction - Literature

Read more here: » Drug addiction: Encyclopedia II - Drug addiction - The basis for addiction

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

Read more here: » Dopamine: Encyclopedia II - Dopamine - Dopamine and psychosis

Dopamine has the chemical formula (C6H3(OH)2-CH2-CH2-NH2). Its chemical name is 4-(2-aminoethyl)benzene-1,2-diol and it is abbreviated "DA." As a member of the catecholamine family, dopamine is a precursor to epinephrine (adrenaline) and norepinephrine (noradrenaline) in the biosynthetic pathways for these neurotransmitters. Arvid Carlsson won a share of the 2000 Nobel Prize in Physiology or Medicine for showing that dopamine is not just a precursor ...

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

Read more here: » Dopamine: Encyclopedia II - Dopamine - Biochemistry