Nervous System

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Nervous System

The Sense of Smell

By: Andy Luttrell

The olfactory system consists of a collection of odor receptors that send a message to the brain when they detect a smell. This is just one of the chemical senses. more...

How the Ear Works

By: Andy Luttrell

The cochlea, a structure in the inner ear, changes sound waves into electrical signals that get sent to the brain. The cochlea also determines the pitch of sounds. more...

How Vision Works in the Brain

By: Andy Luttrell

Once light enters the eye, its message is sent to a number of brain parts. These places in the brain construct pictures and tell the body how to respond. more...

How Eyes Tell the Brain What They "See"

By: Andy Luttrell

When light enters the eye, specific neurons in the retina must respond to the information and send a message to the brain. This is a process called "phototransduction." more...

The Neurology of Pain Perception

By: Andy Luttrell

Feelings of pain are processed differently than other senses. This article explains the basic neurological processing of pain, including pain receptors and brain regions. more...

Sensory Receptors

By: Diane Ursu

Sensory receptors send impulses to the brain regarding the environment in and around the body. more...

How the Retina Works

By: Kenneth Rosen

The ability to see begins with light entering the eye and the processing of visual signals by a highly interconnected series of specialized neurons. more...

What Is Myelin?

By: Kenneth Rosen

Neurons communicate with their target cells by sending signals down their axon. In order to speed conduction of the signal many axons are myelinated. more...

How Balance and Posture Are Maintained

By: John Richard Roberts

The fact that human beings that can stand upright and move around in the environment is due to a remarkable system of information collection and integration. more...

Glial Cells in the Brain

By: Sarah Mikula

Glial cells form the scaffolding of the brain and help keep neurons alive, yet the importance of glia is often overlooked. more...

Understanding the Human Brain

By: Sarah Mikula

The brain is one of the most complicated organs in the body and also one of the most poorly understood today. more...

Is a Wandering Mind a Bad Thing?

By: Dennis Holley

Everyone daydreams but is it something to be ashamed of? New research reveals that there are positive aspects to a wandering mind. more...

Manipulating Memory

By: Dennis Holley

Armed with a better understanding of memory, neuroscience offers hope of noninvasive treatment for a host of psychiatric problems. more...

The Structure And Function Of Neurons

By: Roberta Goli

Movement and activity depend upon the coordination of many cells. The nervous system is what produces this coordination and messages are passed to the brain for response more...

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