The atmosphere is quite dusty, giving the Martian sky a light brown or orange-red color when seen from the surface; data from the Mars Exploration Rovers indicate that suspended dust particles of roughly 1.5 micrometres diameter.
Glutamate is a powerful excitatory neurotransmitter that is released by nerve cells in the brain. It is responsible for sending signals between nerve cells, and under normal conditions it plays an important role in learning and memory.
Many sedatives and hypnotics are GABA agonists. Glutamic acid, also known as glutamate, is an amino acid and is the most common neurotransmitter in the body. 80% of the brain's neurons release glutamate. Glutamateâs most vital function as a neurotransmitter is in cognitive activities like memory and learning.edications for insomnia and hypersomnia usually act on neural systems and affect, in some manner, neurotransmitters. Sleep aids tend to work on the GABA receptors in the brain, or melatonin receptors.