Advanced nervous system physiology

There are billions and billions of neurons in your brain (about 85 billion), and they’re all sending electrical signals throughout your body right now! They tell your eyes to move across this page, how to interpret the words that you read, how to maintain your posture, your heart rate, and your breathing...all of it in a fraction of a second. In this section, we’ll explore the nature of this vast, complex system, from the cellular level to how it operates at a sensory level. A common misconception is that we only have 5 senses (see, smell, taste, hear, and feel), but we have many more that are nuanced but equally important. Learn more about how our bodies are designed to interact with the world.

Sensory perception

Learn about how we perceive our various senses, including the theories, laws, and organizational principles that underly our ability to make sense of the world around us.
Visual cues
Sensory adaptation
Weber's law and thresholds
Somatosensation
Explore our ability to sense the environment through our body.  By Ron.
Signal detection theory - part 1
Signal detection theory - part 2
Bottom-up vs. top-down processing
Gestalt principles

Sound (Audition)

Learn about how we hear, including the structure of the outer, middle, and inner ear, as well as the basics of auditory processing & cochlear implants.
Auditory structure - part 1
Auditory structure - part 2
Auditory processing
Cochlear implants

Taste (gustation) and smell (olfaction)

Learn about our senses of smell (olfaction) and taste (gustation), including the anatomy and underlying molecular basis behind these important senses.
Olfaction - structure and function
Pheromones
Gustation - structure and function