Dopamine
(Redirected from Dopaminergic nerve fibre)
Dopamine is a neurotransmitter. Dopamine is an important neurotransmitter found in the brain and plays a critical role in various physiological functions. It is involved in several neurological and psychiatric disorders, including Parkinson's disease and Attention Deficit Hyperactivity Disorder (ADHD). Dopamine also plays a role in the regulation of mood, motivation, and the brain's reward system.
Functions of dopamine[edit | edit source]
Dopamine is responsible for multiple functions in the human brain and body, including:
- Movement regulation
- Mood and emotion regulation
- Motivation and reward
- Memory and learning
- Attention and focus
Parkinson's disease[edit | edit source]
When the brain does not produce enough dopamine, it can result in Parkinson's disease, a neurodegenerative disorder characterized by motor symptoms such as tremors, stiffness, and balance problems. Treatment for Parkinson's disease often includes the drug L-Dopa, which the body converts into dopamine to alleviate symptoms.
Attention Deficit Hyperactivity Disorder (ADHD)[edit | edit source]
ADHD is a neurodevelopmental disorder that affects attention, impulsivity, and hyperactivity. Researchers believe that genetic factors, including those that affect dopamine neurotransmission, play a role in the development of ADHD. Several genes associated with dopamine regulation have been linked to the disorder.
Dopamine and addiction[edit | edit source]
Dopamine is also associated with the brain's reward system and plays a significant role in addiction. Substances such as nicotine and cocaine can increase dopamine levels in the brain, leading to feelings of pleasure and reinforcing drug-seeking behaviors.
Dopamine and love[edit | edit source]
The feeling of being in love or experiencing affection can also trigger dopamine release in the brain. This neurotransmitter is involved in the formation of emotional bonds and contributes to the pleasurable sensations associated with love and attraction.
See also[edit | edit source]
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- Dopamine
- Amphetamine
- Cardiac stimulants
- Catecholamines
- Dopamine agonists
- Hormones of the hypothalamus
- Hormones of the hypothalamic-pituitary-prolactin axis
- Phenethylamines
- Inotropic agents
- Motivation
- Neurotransmitters
- Norepinephrine-dopamine releasing agents
- TAAR1 agonists
- Neurology
- Psychiatry
- Biochemistry
- Molecular biology
Contributors: Prab R. Tumpati, MD