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Hyperactivity in Brain May Explain Multiple Symptoms of Depression

Published: February 28, 2012.
Released by University of California - Los Angeles  

Most of us know what it means when it's said that someone is depressed. But commonly, true clinical depression brings with it a number of other symptoms. These can include anxiety, poor attention and concentration, memory issues, and sleep disturbances.

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More news from University of California - Los Angeles

Heat Waves Becoming More Prominent in Urban Areas, Research Reveals
The frequency of heat waves has increased dramatically over the past 40 years, and the trend appears to be growing faster in urban areas than in less-populated areas around the world, a new study suggests.

UCLA-led Study Shows How Meltwater on Greenland's Ice Sheet Contribute to Rising Sea Levels
As the largest single chunk of melting snow and ice in the world, the massive ice sheet that covers about 80 percent of Greenland is recognized as the biggest potential contributor to rising sea levels due to glacial meltwater. Until now, however, scientists' attention has mostly focused on the ice sheet's aquamarine lakes -- bodies of meltwater that tend to abruptly drain -- and on monster chunks of ice that slide into the ocean to become icebergs.

Environmental Health Benefits Inspire People to Cut Back on Electricity
What would inspire you to cut your electricity use: Finding out how much money you could save, or knowing how much cancer-causing air pollution you could eliminate? A multidisciplinary study conducted at UCLA showed that eliminating pollution is the more powerful motivator.

Researchers Shed Light on How 'Microbial Dark Matter' Might Cause Disease
One of the great recent discoveries in modern biology was that the human body contains 10 times more bacterial cells than human cells. But much of that bacteria is still a puzzle to scientists.

Lost Memories Might Be Able to Be Restored, New UCLA Study Indicates
New UCLA research indicates that lost memories can be restored. The findings offer some hope for patients in the early stages of Alzheimer's disease. For decades, most neuroscientists have believed that memories are stored at the synapses -- the connections between brain cells, or neurons -- which are destroyed by Alzheimer's disease. The new study provides evidence contradicting the idea that long-term memory is stored at synapses.

Lens-free Microscope Can Detect Cancer at the Cellular Level
UCLA researchers have developed a lens-free microscope that can be used to detect the presence of cancer or other cell-level abnormalities with the same accuracy as larger and more expensive optical microscopes. The invention could lead to less expensive and more portable technology for performing common examinations of tissue, blood and other biomedical specimens. It may prove especially useful in remote areas and in cases where large numbers of samples need to be examined quickly.

As Gay Marriage Gains Voter Acceptance, UCLA-Columbia Study Illuminates a Possible Reason
Conventional wisdom holds that changing the views of voters on divisive issues is difficult if not impossible -- and that when change does occur, it is almost always temporary.

Loss of a Chemical Tag on RNA Keeps Embryonic Stem Cells in Suspended Animation
A team of scientists that included researchers from UCLA has discovered a novel mechanism of RNA regulation in embryonic stem cells. The findings are strong evidence that a specific chemical modification, or "tag," on RNA plays a key role in determining the ability of embryonic stem cells to adopt different cellular identities. The team also included scientists from Harvard Medical School, Massachusetts General Hospital and Stanford University.

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How Our Brain Networks: Research Reveals White Matter 'Scaffold' of Human Brain
For the first time, neuroscientists have systematically identified the white matter "scaffold" of the human brain, the critical communications …
Validating Maps of the Brain's Resting State
Kick back and shut your eyes. Now stop thinking. You have just put your brain into what neuroscientists …
Study Shows a Solitary Mutation Can Destroy Critical 'Window' of Early Brain Development
JUPITER, FL, June 21, 2013 – Scientists from the Florida campus of The Scripps Research Institute (TSRI) have shown …
Max Planck Florida Institute Study: Persistent Sensory Experience Is Good for Aging Brain
Despite a long-held scientific belief that much of the wiring of the brain is fixed by the time of …
Do You Obsess over Your Appearance? Your Brain Might Be Wired Abnormally
Body dysmorphic disorder is a disabling but often misunderstood psychiatric condition in which people perceive themselves to be disfigured …
The Big Picture: Long-term Imaging Reveals Intriguing Patterns of Human Brain Maturation
Neuroimaging has provided fascinating insight into the dynamic nature of human brain maturation. However, most studies of developmental changes …
Neuropsychologist Proves That Some Blind People 'See' with Their Ears
Dr. Olivier Collignon of the University of Montreal's Saint-Justine Hospital Research Centre compared the brain activity of people who …

Daydreaming Simulated by Computer Model
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