This is a hypothesis: 5-HT system makes the cerebrum sedation. Intensive function leads to inhibiting behavior, to contrary, subdued function conduceto stimulate various proceeding.

• 有假设认为:5-HT系统对大脑有镇静作用,其功能增强会导致行为的抑制,功能降低则有助于激发各种行为动作。