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[DOC File]Psychotic Disorders - Brown University
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Theory - psychotic symptoms result from an imbalance of the neruotransmitter dopamine in the brain (these drugs sometimes called dopamine agonists) Antipsychotics block D2 dopamine receptors in the brain = a dec. in psychotic symptoms. Many block the chemoreceptor trigger zone in the brain = antiemetic effect. Antipsychotics
how do antipsychotics affect dopamine

Antipsychotic - Wikipedia
Both typical and atypical antipsychotics exert their effects mainly via D2 receptor blockade by reducing the regional dopamine hyperactivity associated with the positive symptoms of schizophrenia. There is a significant correlation between the D2 receptor blockade and the clinical efficacy of antipsychotics in treating positive symptoms.
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[DOCX File]Psychology: Clinical – Content (AJW)
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Regarding REM sleep, classical antipsychotics do not change the total or relative amounts of REM sleep (Keshavan et al.,1990), nor the duration of REM latency; however, their effects on REM density remain controversial (Wetter et al., 1996) Table 2: Changes in sleep due to typical antipsychotics (haloperidol or chlorpromazine)
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[DOC File]ECT and NMS - Ce4less
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ii. Dopamine agonists and re-uptake blockers worsen psychosis. iii. All effective neuroleptics block post-synaptic dopamine actions. iv. Good responders to neuroleptics have progressive decrease in plasma HVA (dopamine metabolite), while poor responders do not. c. Model for dopamine involvement. i. Increased subcortical dopamine activity. ii.
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[DOC File]Open Michigan
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The original version of the dopamine hypothesis suggested that an ..... of dopamine activity may be responsible for schizophrenic symptoms, (hyperdominergia) in sub-cortical regions, e.g. the limbic system (Carlsson and Lindqvit, 1963) but an updated version (Davis, 1991) suggested that although there may be an excess of dopaminergic activity in some brain regions, schizophrenia is also ...
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[DOC File]Psychiatry—Schizophrenic Disorders
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Effects of central activation of serotonin 5-HT 2A /2C or dopamine D 2 /3 receptors on the acute and repeated effects of clozapine in the conditioned avoidance response test. Min Feng. 1, 2, 3 ...
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[DOCX File]Submission 601 - Tania Budimir - Mental Health - Public ...
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Variations in dopamine activity (either in NT and/or changes in D2 receptor activity) is known to elicit different manifestations of schizophrenia. Hypodopaminergic activity in the mesocortical system (dopamine regulates attention, executive function, and motivation here) …
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[DOC File]Chapter 18
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The populations of schizophrenia patients who have never been exposed to antipsychotics do not have brain atrophy. Serotonin and dopamine communication increases greatly when people have good and pleasurable feelings and experiences. There are over 60 varieties of chemical messages or neurotransmitters in the human brain.
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[DOC File]Schizophrenia, Sleep and Antipsychotics
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Antipsychotics. Haloperidol. Fluphenazine. Thiothixene. Perphenazine. Clorpromazine. Thioridazine. Antidepressants Classes. TCA MAOI SSRI SNRI. Mechanism Block reuptake of serotonin & norepinephrine. Block catabolism of serotonin, NE, dopamine, & monoamines Block serotonin reuptake Block serotonin & norepinephrine reuptake Side effects
how do antipsychotics affect dopamine

[DOCX File]Context-dependent antipsychotic drug memory situationally ...
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MAO-B inhibitors decrease the metabolic degradation of dopamine inside the brain, thereby making more dopamine available for action. Neuroleptic Drugs As mentioned above, NMS has been associated with virtually all neuroleptics, including newer atypical antipsychotics, as well as a variety of other medications that affect central dopaminergic ...
does seroquel lower dopamine

Do antipsychotics decrease dopamine