Sentences with phrase «brain chemical dopamine»

Amantadine, a Parkinson's drug that simulates the natural brain chemical dopamine and activates the striatum, has also helped some people with disorders of consciousness, probably because it increases the striatum's inhibition of the globus pallidus, which in turn stops smothering the thalamus.

Although many are aware that elevations of the brain chemical dopamine play a critical role in cocaine's ability to produce a «high» — feelings that trigger the spiral into addiction — the actions of cocaine are far more complex.

The prevailing theory is that the problems lie in neural networks that use the brain chemical dopamine, in part because drugs such as LSD and amphetamines, which can cause symptoms of psychosis, are known to raise dopamine levels.

Exploratory and inattentive foraging — actual or abstract — appears to be linked to decreases in the brain chemical dopamine.

«Certain psychiatric disorders can be related to alterations in the function of the prefrontal cortex and to changes in the activity of the brain chemical dopamine,» says Cecilia Flores, senior author on the study and professor at McGill's Department of Psychiatry, «Prefrontal cortex wiring continues to develop into early adulthood, although the mechanisms were, until now, entirely unknown.»

Immigrants had higher levels of the brain chemical dopamine than non-immigrants in the study, conducted by the Centre for Addiction and Mental Health (CAMH) in Toronto and the Institute of Psychiatry, Psychology and Neuroscience, King's College London in the U.K. Abnormal dopamine levels are linked to symptoms of schizophrenia.

Overactive neurons in the front of the mouse brain, shown in green, trigger excessive release of the brain chemical dopamine, which causes motor abnormalities.

A third theory, the «dopamine hypothesis,» points to elevated levels of the brain chemical dopamine.

Support for the theory comes from the observation that antipsychotic drugs, which block transmission of the brain chemical dopamine, alleviate motor agitation in people.

Since cocaine changes the level of the brain chemical dopamine, this new study may have implications for other mental illnesses such as depression and schizophrenia — where dopamine may also be involved in how we recognise emotions.

The researchers looked in rats» brains for the genetic instructions needed to make a key «pleasure receptor,» called D2, that allows brain cells to receive signals sent by the brain chemical dopamine — or cocaine.

Missing this filter can make the cells overactive, Soderling said.A third theory, the «dopamine hypothesis,» points to elevated levels of the brain chemical dopamine.

Our team, led by Dr Oliver Howes, has previously found that heavy regular cannabis use is associated with a lowering of the brain chemical dopamine.

It is caused by a loss of the brain chemical dopamine, and it affects 1 — 3 % of those over 65, or about one million Americans.

Dr. Kim's Molecular Neurobiology Laboratory, founded in 1998, studies the biology of brain cells that rely on the brain chemical dopamine to communicate.

The brain chemical dopamine plays a role in attentiveness and activity, and research has linked polymorphisms in DRD4 to an increased risk for attention deficit hyperactivity disorder, or ADHD.

Protein contains tyrosine, an amino acid that elevates the brain chemicals dopamine and norepinephrine.

Other drugs work on preventing the re-uptake of other neurotransmitters, brain chemicals dopamine and norepinephrine, which also cause feelings of happiness, pleasure and reward, and give us energy.

Parkinson's is a disease that slowly destroys brain cells (for some people it happens quickly) in an area of the brain that produces the brain chemical dopamine.

Moreover, aspartame overstimulates the brain chemical dopamine, which over time can result in depression, migraine headaches, and seizures.

One reason for a guy's increased risk of addiction to booze has to do with the brain chemical dopamine, says Dr. Phillips.

Looking at the function of the amygdale and the brain chemical dopamine, Willis makes a clear brain - based assertion that dopamine in students» brains is not as readily blocked when teaching strategies include «exploration and investigation activities, cooperative learning, allowing students to establish some of their own learning goals, student choice of subtopics to investigate, social collaboration, and physical activity connected to academic study» (Willis, 2007, p. 35).

Breastfeeding lowers your body's production of the three chemicals you need for a healthy sex life — the hormones estrogen and testosterone and the brain chemical dopamine — as it turns all the body's attention, via the hormone prolactin, to milk production.

They short - circuit your pleasure center by decreasing levels of the brain chemical dopamine (one of the sexual triumvirate, along with estrogen and testosterone).