While it is almost impossible to list every discipline, some common STEM areas include: aerospace engineering, astrophysics, astronomy, biochemistry, biomechanics, chemical engineering, chemistry, civil engineering, computer science, mathematical biology, nanotechnology, neurobiology, nuclear physics, physics, and robotics, among many, many others.
Presynaptic neurons are the neurons that conduct the AP to release a neurotransmitter and they affect the postsynaptic neurons. What ALWAYS causes a neuron to release any neurotransmitter (whether it is excitatory or inhibitory) is an action potential.ontrast that with exitatory NTs: All excitatory neurotransmitters cause an opening of ligand-gated sodium ion channels. The inhibitory NT could also cause an opening up of ligand-gated Chloride Ion channels.
Excitatory Neurotransmitters. The main excitatory neurotransmitters in the body are dopamine, norepinephrine, epinephrine and glutamate. Dopamine plays a number of important functions in the brain.It is very important in the reward system whereby we feel pleasure, achieve heightened arousal and do much of our learning.lutamate is the most abundant excitatory neurotransmitter in the human brain. It plays key roles in cognitive functions like learning and memory. Imbalances in glutamate levels are associated with Alzheimerâs disease, seizures and forms of autism.