Neurotransmission is the process by which nerve cells, or neurons, communicate with each other and with other cells in the body. It involves the release of chemical messengers called neurotransmitters from one neuron, which then bind to receptors on another neuron or target cell, triggering a response. Neurotransmission plays a crucial role in various physiological processes, including movement, cognition, emotion, and sensory perception. Dysregulation of neurotransmission has been implicated in numerous neurological and psychiatric disorders, such as depression, schizophrenia, and Parkinson's disease. Researchers in the field of neurotransmission study the mechanisms involved in the release, uptake, and action of neurotransmitters, as well as the role of neurotransmission in normal brain function and disease. They also investigate potential therapies that target neurotransmitter systems to treat neurological and psychiatric disorders.