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Dopaminergic and serotonergic pathways. Mesocortical pathway can be seen projecting to the prefrontal cortex from the VTA.
The mesocortical pathway is a dopaminergic pathway that connects the ventral tegmentum to the cerebral cortex, in particular the frontal lobes. It is one of the four major dopamine pathways in the brain. It is essential to the normal cognitive function of the dorsolateral prefrontal cortex (part of the frontal lobe), and is thought to be involved in cognitive control, motivation, and emotional response.[1][2]
This pathway may be the brain system that is abnormal or functioning abnormally in psychoses, such as schizophrenia.[3] It is thought to be associated with the negative symptoms of schizophrenia, which include avolition, alogia and flat affect. This pathway is closely associated with the mesolimbic pathway, which is also known as the mesolimbic reward pathway.
Contents
- 1 Other dopamine pathways
- 2 See also
- 3 References
- 4 External links
Other dopamine pathways
Other major dopamine pathways include:
- mesolimbic pathway
- nigrostriatal pathway
- tuberoinfundibular pathway
See also
References
- ^ Malenka EJ, Nestler SE, Hyman RC (2009). "Chapter 13: Higher Cognitive Function and Behavioral Control". Molecular neuropharmacology: a foundation for clinical neuroscience (2nd ed.). New York: McGraw-Hill Medical. p. 318. ISBN 978-0-07-148127-4. "Therapeutic (relatively low) doses of psychostimulants, such as methylphenidate and amphetamine, improve performance on working memory tasks both in individuals with ADHD and in normal subjects. Positron emission tomography (PET) demonstrates that methylphenidate decreases regional cerebral blood flow in the dorsolateral prefrontal cortex and posterior parietal cortex while improving performance of a spacial working memory task. This suggests that cortical networks that normally process spatial working memory become more efficient in response to the drug. Both methylphenidate and amphetamines act by triggering the release of dopamine, norepinephrine, and serotonin, actions mediated via the plasma membrane transporters of these neurotransmitters and via the shared vesicular monoamine transporter (Chapter 6). Based on animal studies with micro-iontophoretic application of selective D1 dopamine receptor agonists (such as the partial agonist SKF38393 or the full agonist SKF81297) and antagonist (such as SCH23390), and clinical evidence in humans with ADHD, it is now believed that dopamine and norepinephrine, but not serotonin, produce the beneficial effects of stimulants on working memory. At abused (relatively high) doses, stimulants can interfere with working memory and cognitive control, as will be discussed below. It is important to recognize, however, that stimulants act not only on working memory function, but also on general levels of arousal and, within the nucleus accumbens, improve the saliency of tasks. Thus, stimulants improve performance on effortful but tedious tasks, probably acting at different sites in the brain through indirect stimulation of dopamine and norepinephrine receptors."
- ^ Bidwell LC, McClernon FJ, Kollins SH (August 2011). "Cognitive enhancers for the treatment of ADHD". Pharmacol. Biochem. Behav. 99 (2): 262–274. doi:10.1016/j.pbb.2011.05.002. PMC 3353150. PMID 21596055.
- ^ Diaz, Jaime. How Drugs Influence Behavior. Englewood Cliffs: Prentice Hall, 1996.
External links
Neurotransmitter systems
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Acetylcholine |
- Nucleus basalis of Meynert → Neocortex
- Septal nuclei (Medial septal nucleus) → Fornix → Hippocampus
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BA/M |
Dopaminergic pathways |
- Mesocortical pathway: Ventral tegmental area → Frontal cortex
- Mesolimbic pathway: Ventral tegmental area → Nucleus accumbens
- Nigrostriatal pathway: Pars compacta → Striatum
- Tuberoinfundibular pathway: Hypothalamus → Pituitary gland
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Norepinephrine |
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Serotonin pathways |
- Raphe nuclei
- Anterior raphespinal tract
- Lateral raphespinal tract
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AA |
Aspartate |
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GABA |
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Glycine |
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Glutamate |
- Thalamus
- Subthalamic nucleus
- Globus pallidus
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UpToDate Contents
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- 1. 第一世代(定型)抗精神病剤中毒 first generation typical antipsychotic medication poisoning
- 2. 第二世代(非定型)抗精神病薬中毒 second generation atypical antipsychotic medication poisoning
English Journal
- 5-HT1A Receptor Agonists Enhance Pyramidal Cell Firing in Prefrontal Cortex Through a Preferential Action on GABA Interneurons.
- Lladó-Pelfort L, Santana N, Ghisi V, Artigas F, Celada P.SourceDepartment of Neurochemistry and Neuropharmacology, IIBB-CSIC (IDIBAPS), 08036 Barcelona, Spain.
- Cerebral cortex (New York, N.Y. : 1991).Cereb Cortex.2012 Jul;22(7):1487-97. Epub 2011 Sep 5.
- 5-HT(1A) receptors (5-HT1AR) are expressed by pyramidal and γ-aminobutyric acidergic (GABAergic) neurons in medial prefrontal cortex (mPFC). Endogenous serotonin inhibits mPFC pyramidal neurons via 5-HT1AR while 5-HT1AR agonists, given systemically, paradoxically excite ventral tegmental area-proje
- PMID 21893679
- Structural integrity of the prefrontal cortex modulates electrocortical sensitivity to reward.
- Parvaz MA, Konova AB, Tomasi D, Volkow ND, Goldstein RZ.SourceBrookhaven National Laboratory.
- Journal of cognitive neuroscience.J Cogn Neurosci.2012 Jul;24(7):1560-70. Epub 2011 Nov 18.
- The P300 is a known ERP component assessing stimulus value, including the value of a monetary reward. In parallel, the incentive value of reinforcers relies on the PFC, a major cortical projection region of the mesocortical reward pathway. Here we show a significant positive correlation between P300
- PMID 22098260
Japanese Journal
- Roles of Dopamine and Inflammation-Related Molecules in Behavioral Alterations Caused by Repeated Stress
- Furuyashiki Tomoyuki
- Journal of pharmacological sciences 120(2), 63-69, 2012-10-20
- … The mesocortical dopaminergic pathway that regulates such stress-coping functions is attenuated with repetition of stress via prostaglandin (PG) E<SUB>2</SUB>, a bioactive lipid derived from arachidonic acid, and its receptor EP1. …
- NAID 10031123547
- パーキンソン病における中脳辺縁皮質経路 (パーキンソン病の認知機能障害)
- The mesocortical dopamine projection to anterior cingulate cortex plays no role in guiding effort-related decisions
Related Links
- The mesocortical DA system may modify PFC nociceptive responses via D 2 activity. Keywords: ACC, PFC, Dopamine, D 2 R, Pain, Parkinson disease, VTA Background Psychological conditions like attention [1] and hypnotic23, ...
- Definition of mesocortical in the Definitions.net dictionary. Meaning of mesocortical. What does mesocortical mean? Information and translations of mesocortical in the most comprehensive dictionary definitions resource on the web.
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