Acetylcholine and norepinephrine are excitatory neurotransmitters. According to Neurogistics.com, excitatory neurotransmitters are what stimulate the brain. When these excitatory neurotransmitters are released, the specific portion of the brain that they effect show an increased amount of brain activity. According to Rice University, norepinephrine affects part of the brain where attention and responding actions are controlled. Norepinephrine also is transmitted in the hypothalamus and limbic system and have been known to be involved in appetite and mood control and nervous system arousal. Additionally, acetylcholine is released in several areas in the brain such as the cortex and hypothalamus. These areas of the brain are involved in memory,
