Neurons (also called nerve cells) are the basic building blocks of the nervous system.
But isolated from one another, neurons would not enable you to see, think, react to the world, or act upon it.
When psychologists study behavior or mental processes, they are really looking
at the combined responses of a vast web of billions of neurons that are in constant communication.
This activity examines the way a neuron passes information (neural impulses)
within its own cell and the way it relays messages to other neurons.
Neurons can be classified into three broad groups, according to the way in which they transmit messages within the body.
Sensory neurons carry information from the body's tissues and organs to the central nervous system.
Interneurons in the brain and spinal cord link the sensory and motor neurons.
They do the additional processing of the information needed to make sense of the events occurring within your body and outside in the environment.
Motor neurons carry instructions from the central nervous system to the body's muscles, organs, and tissues.