|A neuron. Image includes a close up of the synapse, i.e. the |
connection with a neighbouring neuron. Source: here.
Of central importance to understanding these cells is the study of the way that they communicate with each other. When stimulated by neighbouring cells, each neuron sends out a small electrical current called an impulse. This travels along the nerve fibre, the 'axon', and then triggers the release of chemicals called neurotransmitters. These are then picked up by receptors on other cells.
This apparently simple process is the building block of all our psychological processes and behaviour.