cerebral cortex. The outer layer of gray matter that covers the cerebral hemispheres in the brain of many vertebrate animals and is composed of folds of nerve cells and fibers.erebral cortex. The outer layer of gray matter that covers the cerebral hemispheres in the brain of many vertebrate animals and is composed of folds of nerve cells and fibers.
Dopamine blockers and depletors are used to treat conditions that arise from the over-production or increased activity of dopamine. Dopamine blockers work by binding to and blocking the action of dopamine receptors.his prevents the receptors from using the dopamine that is present in the brain or elsewhere in the body. Conversely, dopamine depletors work by preventing dopamine from being stored or released by neurons. There are numerous types of dopamine blockers and depletors.
In the brain, dopamine functions as a neurotransmitterâa chemical released by neurons (nerve cells) to send signals to other nerve cells. The brain includes several distinct dopamine pathways, one of which plays a major role in reward-motivated behavior. Most types of reward increase the level of dopamine in the brain, and many addictive drugs increase dopamine neuronal activity. Other brain dopamine pathways are involved in motor control and in controlling the release of various hormones. These pathways and cell groups form a dopamine system which is neuromodulatory.