1. How Biology Affects Behaviour

4. Neurotransmitors and thier effect on behaviour

Neurotranmitters are chemical messengers that help move electical signals across the synapse between two neurons ends.

Each has a specific shape (structure) and has a specialized effect (function). The presence or absence of each of these different transmitters causes either proper or abnormal function in physiology and behaviour in the human body.  The following chart summarizes neurotransmitter function and effect.