Читать книгу Anxiety For Dummies - W. Doyle Gentry, Laura L. Smith - Страница 47

Neurotransmitters help nerve cells communicate feelings, fears, emotions, thoughts, and actions through an intricate orchestration. Four major neurotransmitter systems and some of their functions include

 The noradrenergic system, which produces norepinephrine and epinephrine. It also stimulates organs required in the fight-or-flight response (see the following section).

 The cholinergic system, which activates the noradrenergic neurotransmitters and facilitates formation of memories.

 The dopaminergic system, which is involved in movement and is also related to feelings of pleasure and reward. Dopamine disruptions cause problems with attention, motivation, and alertness, and appear to be quite important in the development of fear responses.

 The serotonergic system, which is related to moods, anxiety, and aggression.