Neurotransmitters are generally synthesized in neurons and are made up of, or derived from, precursor molecules that are found abundantly in the cell. Classes of neurotransmitters include amino acids… See more

Until the early 20th century, scientists assumed that the majority of synaptic communication in the brain was electrical. However, through histological examinations by Ramón y Cajal, a 20 to 40 nm gap between ne… See more

To identify neurotransmitters, the following criteria are typically considered:
1. Synthesis: The chemical must be produced within the neuron or be present in it as a precursor molecule.
2. Release and Response: … See more