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1911 - 1920 of 2118 results
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From the first large studies monitoring the mental functioning of the same group of healthy humans over many years, scientists have uncovered unexpected results. -
Insulation covering wires preserves the strength of the electrical signals that travel through them. The myelin sheath covering axons serves a similar purpose. -
The brain uses a variety of chemicals called neurotransmitters to communicate between brain cells. -
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. -
Much faster than a traditional MRI, MEG can be used to provide even more information about brain activity. -
Medical professionals have come to rely on even more specialized forms of the MRI machine, each suited to spotting specific warning signs. -
The ability to react quickly in response to threatening events has been with us since the time of our earliest ancestors. -
Brain injury is all too common, but treatments are being improved constantly. Those who survive a brain injury face a lifetime of disability, with economic costs approaching $60 billion annually. -
Once the neurons reach their final location, they must make the proper connections so that a particular function, such as vision or hearing, can emerge. -
Processing information from the sensory systems is one of many functions of the brain. Such information is often the first step in other brain activities, including learning and retaining knowledge.
