A chemical produced by the brain; it assists in the effective transmission of messages from one nerve cell to the next. People with Parkinson's have decreased amounts of the chemical in the basal ganglia and substantia nigra, two structures located deep in the brain. Dopamine coordinates the actions of movement, balance, and walking.
A neurotransmitter and hormone. Dopamine levels have been associated with mood state.
a neurotransmitter that is essential for muscle control.
Neurotransmitter or "chemical messenger" that controls movement. It is deficient in the brains of Parkinson's disease patients. Taken orally, it cannot cross the blood-brain barrier and produces side effects such as nausea.
A chemical transmitter in the brain similar to adrenaline. Dopamine affects brain processes that control movement, emotional response, and ability to experience pleasure and pain.
A chemical messenger which is found in reduced levels in the brains of people with Parkinsonâ€™s disease.
One of a number of chemicals used by nerve cells as neurotranmitters. Messages are carried electrically along individual nerve cells but signalling from one nerve cell to another is usually accomplished by releasing a neurotransmitter chemical. Dopamine is the main neurotransmitter of the nerve cells which die off in Parkinson's disease.
One of many neurotransmitters that is essential in the functioning of the central nervous system and is often considered to be the primary reward neurotransmitter in the brain. It is the precursor to norepinephrine.
Neurotransmitter that affects brain processes involved in controlling movement, emotional response, and the ability to experience pleasure and pain; drugs increasing DA are prescribed for Parkinson's disease and drugs that inhibit DA are prescribed for schizophrenia. See also: Treatment
The neurotransmitter that produces feelings of pleasure when released by the brain reward system.
A chemical that inhibits the release of hormones from the pituitary and thereby blocks the pituitary's response to injected LHRHa.
A neurotransmitter and hormone that acts as a stimulant to the nervous system
A neurotransmitter that controls movement and balance and is essential to the proper functioning of the central nervous system (CNS). Dopamine assists in the effective transmission of electrochemical signals from one nerve cell (neuron) to another.
An important neurotransmitter in the central nervous system.
A brain neurotransmitter (a chemical that carries messages between brain cells). In people with Parkinson's disease, their dopamine-producing cells degenerate causing loss of normal muscle function.
A neurotransmitter responsible in part for alertness and mental activation.
A chemical in the brain which can affect mental function (neurotransmitter) which is thought to influence or be influenced by severe mental illness.
A neurotransmitter of the central nervous system believed to play a role in schizophrenia. It is synthesized from an amino acid by the action of certain body enzymes and, in turn, is converted into norepinephrine. See also neurotransmitter, norepinephrine.
A hormone-like substance that acts as a neurotransmitter, transmitting nerve signals from neuron to neuron.
An excitatory neurotransmitter that plays a role in the reward system in the brain and possibly also in the reinforcing properties of alcohol use.
a neurotransmitter involved in the inhibitory function of the basal ganglia; it is produced by the substantia nigra. Lack of dopamine can result in Parkinson's disease.
A chemical found in neurons that has many functions. Dopamine is involved in reward and learning systems, facilitating learning and enlivening memory. Dopamine production in the brain drops with age. Posit Science programs are designed to up-regulate dopamine production in the brain by delivering rewards and engaging learning machinery.
catecholamine neurotransmitter. Disorders such as schizophrenia are believed to develop when levels are too high or too low.
A catecholamine that is both a precursor of norepinephrine and itself a neurotransmitter of the central nervous system. Disturbances in certain of its tracts apparently figure in schizophrenia and Parkinson's disease.
a chemical substance derived from DOPA, found in the brain; acts as a neurotransmitter governing movements, balance, and walking; is deficient in Parkinson patients.
A type of neurotransmitter (or brain chemical) thought to be affected in a person with depression. Increasing the availability of dopamine is one of the strategies used in treating depression.
A neurotransmitter whose dysregulation has been implicated in the pathogenesis of schizophrenia
Chemical messenger in the brain that transmits impulses from one nerve cell to the next.
A chemical produced by the brain; it assists in the effective transmission of electrochemical messages from one nerve cell to the next. It is deficient in the basal ganglia and Substantia Nigra of a person with Parkinson's. It governs actions of movement, balance and walking.
Neurotransmitter lacking in Parkinson disease patients
A neurotransmitter that works in an axis with serotonin.
One of several chemicals called "neurotransmitters" that transmit or send messages from one nerve cell to another in the nervous system.
A chemical produced at some nerve connections in the brain.
One of the many "chemical messengers" in the brain. It carries messages between the various nerves that control movement. Its deficiency in the brains of people with Parkinson's disease is the underlying cause of the symptoms of the disease.
one of the brain's emotional stimulants such as adrenaline or seretonin. Dopamine levels affect mood.
A neurotransmitter, or chemical that transmits signals between nerve cells. Dopamine appears to function as an inhibitor. It has been associated with schizophrenia, and there is some evidence linking dopamine levels with pathological gambling. (See also serotonin)
A catecholamine neurotransmitter that is found primarily in the basal ganglia of the central nervous system. Major functions include the peripheral inhibition and excitation of certain muscles; cardiac excitation; and metabolic, endocrine and central nervous system actions.
A neurotransmitter (chemical messenger) that transports signals to the parts of the brain that control movement.
Dopamine is a neurotransmitter in the central nervous system. A deficiency of this chemical is related to Parkinson's Disease, paranoia, memory and concentration problems.
A chemical which carries signals from one nerve cell to another in the brain in those regions where movement is controlled
A neurotransmitter - a brain chemical that carries messages between brain cells. Dopamine is associated with feelings of pleasure, usually after food or sex. Drugs that artificially affect dopamine levels may cause craving for more of the drug.
Important chemicals, which acts as neurotransmitters in many brain regions inducing the reward system or nucleus accumbens. (There are 5 main neurotransmitters: Norepinepherine, Serotonin, GABA, Opioids, and Dopamine)
neurotransmitter released in the nervous system.
An amine neurotransmitter. The reduced level of dopamine in the "substantia nigra" brain region is one of the primary deficits in Parkinson's disease patients.
A catecholamine that often functions as a neurotransmitter.
A neurotransmitter in the brain that regulates thought, movement and behavior.
A neurotransmitter found in the brain that is essential for the central nervous system to function normally.
A chemical that transmits messages in the brain and plays a role in movement.
Neurotransmitter associated with the regulation of movement, emotional response, pleasure, and pain.
A neurotransmitter produced by cells in the substantia nigra, within the basal ganglia in the brain. The function of dopamine is to modulate the messages sent from the brain to other parts of the body, particularly those involved in the co-ordination of movement. People with Parkinson's have a shortage of dopamine.
neurotransmitter associated with reward and motivation. Evidence suggests dopamine levels in the prefrontal cortex need to be neither too high nor too low for optimal functioning. Novelty aids learning ; Key neural system at risk from fetal alcohol exposure ; December 2001 news report ; Amphetamine helps or hinders cognitive function depending on your genes
A neurohormone; precursor to norepinephrine which acts as a stimulant to the nervous system.
a neurotransmitter involved in mood and movement.
A neurotransmitter that is created in the brain and is required for the proper functioning of the central nervous system.
A neurotransmitter (brain chemical). Disturbance in the level of dopamine may be associated with some forms of psychosis such as schizophrenia and with abnormal movement disorders such as Parkinson's disease. Research suggests that neurons sensitive to dopamine may play an important role in the positive reinforcing properties of cocaine and the opiate drugs.
A brain chemical, classified as a neurotransmitter, found in regions of the brain that regulate movement, emotion, motivation, and pleasure.
Neuromediator involved in the mechanisms of pleasure.
A neurotransmitter. Lack of dopamine is a cause of Parkinson's disease, in which a person loses the ability to initiate controlled movements. Dopamine moves into the frontal lobe regulating the flow of information coming in from other areas of the brain. Compromise in the flow of dopamine may cause disrupted or incoherent thought as in schizophrenia. In milder disorders, too much dopamine in the limbic system and not enough in the cortex may produce an overly suspicious personality, leading to bouts of paranoia or an inhibition of social interaction. A shortage of Dopamine in the frontal lobes may contribute to poor working memory. Dopamine is also thought to produce feelings of bliss (the pleasure chemical). More dopamine into the frontal lobe lessens pain and increases pleasure.
an amino acid found in the adrenal gland. Used to treat hypotension and Parkinson's disease.
Dopamine is a neurotransmitter formed in the substantia nigra and transmitted, by the nigrostriatal fibres, to the striatum. A decrease in the number of dopamine-producing cells in PD results in impaired communication between the substantia nigra and the striatum. Dopamine deficiency is a causative factor of PD and is associated with bradykinesia, tremor, and rigidity. Many of the drugs used in the treatment of PD alleviate symptoms by either replenishing dopamine e.g. levodopa or by mimicking the effects of dopamine
a monoamine neurotransmitter found in the brain and essential for the normal functioning of the central nervous system.
a chemical produced by the brain; it assists in the effective transmission of electrochemical messages between neurons.
neurotransmitter chemical that controls complex movements, cognition, motivation, and pleasure, and regulates emotional responses
A catecholamine neurotransmitter known to have multiple functions depending on where it acts. Dopamine-containing neurons in the substantia nigra of the brainstem project to the caudate nucleus and are destroyed in Parkinson's victims. Dopamine is thought to regulate emotional responses, and play a role in schizophrenia and cocaine abuse.
A neurotransmitter involved in various brain structures, including those that control motor action.
A chemical produced by the brain that assists in the successful conduction of electrochemical messages from one nerve cell to the next--governing actions of movement, balance, and walking
an adrenergic neurotransmitter. Several dopamine receptors have been linked to TS.
A monoamine catecholamine neurotransmitter and hormone (C8H11NO2) which is a precursor of norepinephrine. It is involved in motor activity, reward, learning, memory, and various other functions.
A neurotransmitter that is the main chemical messenger in the reward centers of the brain, which promotes the experience of pleasure.
A catecholamine present in the CNS in about equal concentrations to those of NE, dopamine functions actively as a neurotransmitter in its own right. It has roles in motor functions, the motivation and good mood we experience from positive reinforcement and reward, cognition and focus and working memory. Dopamine is a precursor for norepinephrine and is found where NE is found, both in the central nervous system and in the adrenal medulla.
A "pleasure" neurotransmitter that plays a central role in the brain's internal reward system.
A neurotransmitter present in several brain regions involved in movement, emotion, motivation, reinforcement, and feelings of pleasure.
A neurotransmitter manufactured by the brain, it is key to the central nervous system's functionality. A chemical in the brain thought to be affected by ADHD.
a monoamine neurotransmitter formed in the brain, primarily in the substantia nigra; essential to the normal function of the central nervous system.
One of the neurotransmitters (brain chemicals) involved in motor and vocal tics
An important neurotransmitter (messenger) in the brain. See the entire definition of Dopamine
a chemical messenger, deficient in the brains of Parkinson's disease patients, that transmits impulses from one nerve cell to another.
a neurotransmitter critical to fine motor co-ordination, immune function, motivation, insulin regulation, physical energy, thinking, short term memory, emotions such as sexual desire and autonomic nervous system balance.
A substance in the brain that affects patterns of thought.
A neurotransmitter in the brain. Antipsychotic medications slow down dopamine's ability to transmit messages between nerve cells in the brain.
Neurotransmitter involved in reward pathways in the brain.
A naturally occurring chemical that helps to cause feelings of pleasure in the brain. Opioid agonists stimulate dopamine activity. | Close window
A neurotransmitter found in many areas of the brain. Important for movement and other behavior.
Neurotransmitter found in high concentrations in the limbic system in the brain. Involved in the regulation of movement, thought, and behavior.
A neurotransmitter produced in the brain. A lack of this secretion causes Parkinson's disease.
An important neurotransmitter in the nervous system. Nerve cells that release dopamine are most affected in people with Parkinson's Disease, and are becoming increasingly implicated in HD.
A substance in the brain that helps nerve cells signal one another and tell the body's muscles what to do. In Parkinson's disease, the body does not produce enough of it to keep the muscles working properly. Dysarthria: Is difficulty in articulating words.
A substance found in the brain that is involved in the sending of messages between nerves. It is an excitatory, or stimulating neurotransmitter.
a neurotransmitter chemical prominent in the brain.
A chemical messenger (neurotransmitter) in the brain that allows nerve cells to send communicate with each other
A chemical compound, found in the brain, that transmits nerve impulses and is involved in the formation of epinephrine.
a hormone-like substance that is an important neurotransmitter. In normal amounts it facilitates vital brain functions, but in imbalance it causes serious dysfunction. Dopamine affects processes controlling movement, emotion, and the sense of pleasure and pain. The chemical formula for dopamine is C8H11NO2.
A feel good hormone. Is a neurotransmitter.
A neurotransmitter present in regions of the brain that regulate movement, emotion, motivation, and the feeling of pleasure.
(do-pah-meen): A chemical substance ( neurotransmitter) which transfers nerve impulses in the brain. Dopamine is involved in the regulation of movement, thought, and behavior.
a monoamine neurotransmitter involved in movement, cognition and pleasure.
A neurotransmitter chemical produced in the brain that helps control movement, balance, and walking. Lack of dopamine is the primary cause of Parkinson's symptoms.
a naturally occurring neurotransmitter found in the brain that regulates movement, balance, and walking. It is the substance that is lost in PD.
a catecholamine derived from dopa that functions as a neurotransmitter, acting on specific dopamine receptors and also on adrenergic receptors throughout the body, especially in the limbic system and extrapyrimidal system of the brain and in the arteries and the heart. It also stimulates the release of noradrenaline from nerve endings.
A chemical messenger (neurotransmitter) that regulates brain processes such as those that control movements, emotions, pleasure, and pain.
Black's medical dictionary, G Macpherson ed; 38th ed A catecholamine and a precursor to noradrenaline. Its highest concentration is in the basal ganglia part of the brain, where its function is to convey inhibitory influences to the extrapyramidal system of the brain.
A neurotransmitter important in helping to regulate physical movement, pleasure, and thought and is missing in patients with Parkinson's Disease.
A chemical in the brain that is thought to be affected by ADHD.
An amino acid that occurs especially as a neurotransmitter in the brain.
Catecholamine neurotransmitter synthesized from dopa.
a chemical substance, a neurotransmitter, found in the brain that regulates movement, balance, and walking.
Dopamine is a chemical naturally produced in the body. In the brain, dopamine functions as a neurotransmitter, activating five types of dopamine receptor - D1, D2, D3, D4 and D5. Dopamine is also a neurohormone released by the hypothalamus.