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1931 - 1940 of 2124 results
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The brain uses a variety of chemicals called neurotransmitters to communicate between brain cells. -
Considered the most common mental illnesses, anxiety disorders affect an estimated 18 percent of the adult population in a given year, or 40 million Americans. -
To be able to see anything, eyes first need to process light. Vision begins with light passing through the cornea. -
Although most of us don’t think of it in this way, the related senses of taste and smell help us interpret the chemical world. -
Neuroscientists believe that the brain can remain relatively healthy and full-functioning as it ages.
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Medical science offers us a number of different ways to dull or treat pain. -
From remembering a friend's face to figuring out where you left your keys, the act of memory has many dimensions. -
The messages sent from one brain cell to another are the basis of brain function. Brain cells communicate through both electrical and chemical means. -
Insulation covering wires preserves the strength of the electrical signals that travel through them. The myelin sheath covering axons serves a similar purpose. -
In response to signals from a brain region called the hypothalamus, the adrenal glands secrete glucocorticoids, hormones that produce an array of effects in response to stress.
