Every animal you can think of -- mammals, birds, reptiles, fish,
amphibians -- all have brains. But the human brain is unique. It
gives us the power to think, plan, speak, imagine... It is truly an
amazing organ.
The brain performs an incredible number of tasks:
* It controls body temperature, blood pressure, heart rate and
breathing.
* It accepts a flood of information about the world around you from
your various senses (eyes, ears, nose, etc.).
* It handles physical motion when walking, talking, standing or
sitting.
* It lets you think, dream, reason and experience emotions.
All of these tasks are coordinated, controlled and regulated by an
organ that is about the size of a small head of cauliflower: your
brain.
Your brain, spinal cord and peripheral nerves make up a complex,
integrated information-processing and control system. The
scientific study of the brain and nervous system is called
neuroscience or neurobiology. Because the field of neuroscience is
so vast, and the brain and nervous system so complex, this article
will start at the beginning and give you an overview of this
amazing organ.
In this article, we will examine the structures of the brain and
what each one does. With this general overview of the brain, you
will be able to understand concepts such as motor control, visual
processing, auditory processing, sensation, learning, memory and
emotions, which we will cover in detail in future articles.