Any of a class of aromatic amines that includes a number of neurotransmitters such as epinephrine and dopamine.
- The tyrosine derivatives are the thyroid hormones, and the catecholamines (adrenaline and noradrenaline) which are produced in the medulla of the adrenal glands.
- Other hormones that influence blood sugar levels are cortisol, growth hormone and catecholamines (epinephrine and norepinephrine).
- In the brain, high levels of the catecholamines dopamine and norepinephrine are released in the PFC during stress exposure, even during relatively mild psychological stress.
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