What makes birds so smart?
Researchers at Ruhr University Bochum explain how it is possible for the small brains of pigeons, parrots and corvids to perform equally well as those of mammals, despite their significant differences.
Researchers at Ruhr University Bochum explain how it is possible for the small brains of pigeons, parrots and corvids to perform equally well as those of mammals, despite their significant differences.
Plants & Animals
Mar 6, 2024
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50
Chemistry in a relationship refers to the intense feelings of connection, passion, and romance that people share. This Valentine's Day, Dr. Alex Baker, a chemistry professor at the University of Warwick, explores the real ...
Other
Feb 13, 2024
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1
His mind might have been set on finding water or on perfecting a song he learned as a chick from his dad. But all of that gets pushed down the to-do list for an adult male zebra finch when he notices a female has drawn nigh.
Plants & Animals
Sep 27, 2023
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3
A form of gene therapy currently used to treat Parkinson's disease may dramatically reduce alcohol use among chronic heavy drinkers, researchers at Oregon Health & Science University and institutions across the country have ...
Biotechnology
Aug 14, 2023
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19
Researchers from the Xishuangbanna Tropical Botanical Garden (XTBG) of the Chinese Academy of Sciences and the University of California San Diego have revealed that receiving an inhibitory signal (stop signal) associated ...
Ecology
Apr 13, 2023
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39
Carbon nanotubes not only shine brighter in the presence of dopamine, but also for longer. The time period of the shining serves as a new parameter to detect biological messenger substances.
Bio & Medicine
Apr 12, 2023
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28
Dopamine is best known as a neurotransmitter. What is rather unknown, however, is that the underwater glue used by mussels contains large amounts of L-Dopa molecules, an analog of dopamine.
Biochemistry
Feb 16, 2023
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15
Altered levels of the neurotransmitter dopamine are apparent in various conditions, such as Parkinson's disease and depression.
Analytical Chemistry
Jan 25, 2023
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42
Astronomers build new telescopes and peer at the night sky to see what they might find. Janelia Group Leader Abraham Beyene takes a similar approach when looking at the cells that make up the human brain.
Bio & Medicine
Aug 25, 2022
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502
A new University of California, Irvine-led study establishes important conceptual connections between the fields of circadian rhythms, metabolism, and addiction. Going beyond current studies on substance use disorders, which ...
Molecular & Computational biology
Mar 11, 2022
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304
Dopamine is a neurotransmitter occurring in a wide variety of animals, including both vertebrates and invertebrates. In the brain, this phenethylamine functions as a neurotransmitter, activating the five types of dopamine receptors — D1, D2, D3, D4, and D5, and their variants. Dopamine is produced in several areas of the brain, including the substantia nigra and the ventral tegmental area. Dopamine is also a neurohormone released by the hypothalamus. Its main function as a hormone is to inhibit the release of prolactin from the anterior lobe of the pituitary.
Dopamine can be supplied as a medication that acts on the sympathetic nervous system, producing effects such as increased heart rate and blood pressure. However, because dopamine cannot cross the blood-brain barrier, dopamine given as a drug does not directly affect the central nervous system. To increase the amount of dopamine in the brains of patients with diseases such as Parkinson's disease and dopa-responsive dystonia, L-DOPA (levodopa), which is the precursor of dopamine, can be given because it can cross the blood-brain barrier.
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