Our mission is to accurately assess property and provide prompt and courteous help to the public. We determine the value of property in Boston for the purpose of taxation. Department Menu Filing for a residential exemption, personal exemption, or tax deferral
The Four Happiness Neurotransmitters and Your Brain. Mesolimbic dopaminergic and serotonergic pathways. If your high in Seritonin, youâre positive, confident, flexible, and easy going. If youâre sinking in Seritonin, youâll tend to become negative, obsessive, worried irritable, ad sleepless. If youâre high in Catecholamines (norepinephrin, dopamine, and adrenalin are in this group), youâre energized, upbeat, and alert. If your Catecholamines have crashed, you can sink into a flat, lethargic funk.
Your brain is made up of billions of nerve cells. They communicate by releasing chemical messengers called neurotransmitters. Each neurotransmitter is like a key that fits into a special lock, called a receptor, located on the surface of nerve cells. When a neurotransmitter finds its receptor, it activates the receptor's nerve cell. The nicotine molecule is shaped like a neurotransmitter called acetylcholine. Acetylcholine and its receptors are involved in many functions, including muscle movement, breathing, heart rate, learning, and memory. They also cause the release of other neurotransmitters and hormones that affect your mood, appetite, memory, and more. When nicotine gets into the brain, it attaches to acetylcholine receptors and mimics the actions of acetylcholine. Nicotine also activates areas of the brain that are involved in producing feelings of pleasure and reward. Recently, scientists discovered that nicotine raises the levels of a neurotransmitter called dopamine in the parts of the brain that produce feelings of pleasure and reward. Dopamine, which is sometimes called the pleasure molecule, is the same neurotransmitter that is involved in addictions to other drugs such as cocaine and heroin.