News tagged with dopamine
Drinking alcohol primes certain areas of our brain to learn and remember better, says a new study from the Waggoner Center for Alcohol and Addiction Research at The University of Texas at Austin.
Neuroscience Apr 12, 2011 | 4.7 / 5 (15) | 7 |
(Medical Xpress)—To John Salamone, professor of psychology and longtime researcher of the brain chemical dopamine, scientific research can be very slow-moving.
Neuroscience Dec 03, 2012 | 4.9 / 5 (14) | 1 |
Whether someone is a "go-getter" or a "slacker" may depend on individual differences in the brain chemical dopamine, according to new research in the May 2 issue of The Journal of Neuroscience. The findings suggest that d ...
Medical research May 01, 2012 | 4.4 / 5 (13) | 6 |
A research group from the University of Leeds has shown that infection by the brain parasite Toxoplasma gondii, found in 10-20 per cent of the UK's population, directly affects the production of dopamine, a key chemical messen ...
Medical research Nov 04, 2011 | 5 / 5 (11) | 3 |
Computer networks that can't forget fast enough can show symptoms of a kind of virtual schizophrenia, giving researchers further clues to the inner workings of schizophrenic brains, researchers at The University of Texas ...
Psychology & Psychiatry May 05, 2011 | 4.9 / 5 (8) | 5 |
It is known that training can improve working memory. In a new study in Science, researchers from Karolinska Institutet, Umeå University, Åbo Akademi University, and the University of Turku show for the first time t ...
Psychology & Psychiatry Aug 05, 2011 | 4.9 / 5 (7) | 0 |
Every day we make thousands of tiny predictions when the bus will arrive, who is knocking on the door, whether the dropped glass will break. Now, in one of the first studies of its kind, researchers at Washington University ...
Neuroscience Aug 17, 2011 | 4.1 / 5 (8) | 17 |
A research team led by investigators at the Virginia Tech Carilion Research Institute has demonstrated the first rapid measurements of dopamine release in a human brain and provided preliminary evidence that the neurotransmitter ...
Neuroscience Oct 28, 2011 | 4.4 / 5 (7) | 8 |
While we often think of memory as a way of preserving the essential idea of who we are, little thought is given to the importance of forgetting to our wellbeing, whether what we forget belongs in the "horrible memories department" ...
Neuroscience May 09, 2012 | 4.7 / 5 (6) | 0 |
What characterizes many people with depression, schizophrenia and some other mental illnesses is anhedonia: an inability to gain pleasure from normally pleasurable experiences.
Neuroscience Mar 21, 2012 | 4.3 / 5 (6) | 0 |
Parkinson's disease researchers at the University at Buffalo have discovered how mutations in the parkin gene cause the disease, which afflicts at least 500,000 Americans and for which there is no cure.
Parkinson's & Movement disorders Feb 07, 2012 | 5 / 5 (5) | 1 |
(Medical Xpress)—A new study by scientists in the US has found that the opiate morphine and the stimulant cocaine act on the reward centers in the brain in different ways, contradicting previous theories ...
Medical research Oct 05, 2012 | 5 / 5 (5) | 0 |
Working with mice, Johns Hopkins researchers have established a link between elevated levels of a stress hormone in adolescence—a critical time for brain development—and genetic changes that, in young adulthood, cause ...
Neuroscience Jan 17, 2013 | 5 / 5 (5) | 3 |
Johns Hopkins researchers believe they may have discovered an explanation for the sleepless nights associated with restless legs syndrome (RLS), a symptom that persists even when the disruptive, overwhelming nocturnal urge ...
Neuroscience May 07, 2013 | 4.4 / 5 (5) | 1 |
(Medical Xpress) -- We all remember that feeling of intense emotions as a new love and romance begins. Despite the ongoing debate that intense love fades through the years, there are still many couples who ...
Neuroscience May 11, 2011 | 4.2 / 5 (5) | 0 |
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.
For more information about Dopamine, read the full article at
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