Learn the basics about how the brain, and its billions of neurons, function


Containing nearly 100 billion neurons, the brain is by far the body’s most complex organ. Understanding how the brain works is crucial to finding new ways to treat complex and devastating neurological diseases. 

The brain is a central component of the nervous system, a network that transmits signals to and from different parts of the body, and regulates involuntary and voluntary actions. Specialised nerve cells, or neurons, and supporting non-neuronal cells, called glia, form the basic building blocks of the nervous system.

The brain and nervous system regulate a wide variety of essential functions, including:

  • Thinking, attention, reasoning and feeling emotions
  • Absorbing and processing sensory information such as vision, sound, and smell
  • Learning new information and committing it to memory
  • Sleep and dreaming
  • Physical movement and posture when walking, running, sitting or standing
  • Regulating body temperature, breathing, heart rate and blood pressure

Brain Physiology

How do the cells of the brain and nervous system function? How do you learn and remember new things? What is neuroplasticity? How do we see and hear? Learn about how the brain works.

Brain Anatomy

How is the brain structured? What are different areas in the brain? What functions are each region responsible for?  Learn about the structure of the brain.