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From the Editor
Editor's Note
 
Memory News
Fatty food weighs down muscles and memory
 
Pumping Neurons: Exercise to maintain a healthy brain
The evidence is growing that moderate regular exercise boosts memory and other brain functions and may help prevent age-related declines.
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How Parkinsonís disease affects the mind

It’s not just a movement disorder. Besides causing tremors and other motion-related symptoms, Parkinson’s disease affects memory, learning, and behavior.

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Creative healing: art therapy for Alzheimer's disease and other dementias
As medical science races to cure dementia, storytelling and other creative activities promise a better quality of life for the millions already diagnosed.
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Memory Tip
Medicate Your Memory
Glossary
Fast Magnetic Resonance Imaging (fMRI)
 

Fast magnetic resonance imaging is a technique using very rapidly acquired magnetic resonance images (MRIs). MRI pictures are taken less than a second apart, and are used to capture blood flow changes during a cognitive, sensory or motor task. If a particular brain area has increased blood flow during a task, it is assumed that the brain area is heavily active and thus critically involved in that task. Typically, fMRI images obtained during a task are compared against the activity patterns obtained during a control task.

Because fMRI gives a snapshot of the functioning brain, the technique is sometimes called "functional MRI". It is useful both for identifying function in the normal brain as well as detecting various abnormalities due to injury or disease. In general, the results of these studies confirm those of positron emission tomography (PET) studies in implicating particular brain regions in particular kinds of activity. fMRI provides better spatial resolution than PET, and is less intrusive -- since PET requires injection of a radioactive tracer into the bloodstream.

Further reading: Illustrated Guide to Diagnostic Tests, 2nd edition. Springhouse Corporation, Springhouse PA, 1998

 

 

by Catherine E. Myers. Copyright © 2006 Memory Loss and the Brain