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Latest Cerebrum Stories

Emotions Cause Physiological Changes
2014-01-01 08:10:51

redOrbit Staff & Wire Reports - Your Universe Online That tightening you feel in your chest when you’re anxious, or that warm sensation that washes over your entire body when you feel loved – those sensations aren’t just in your head, according to new research which maps the physiological changes that accompany different emotions. The study, which appears in the journal Proceedings of The National Academy of Sciences, said that feelings can alter both our mental and physical...

Cramming Does Not Help Create Long-Term Memories
2013-12-26 03:45:48

Ranjini Raghunath for redOrbit.com - Your Universe Online Those last-minute cramming sessions fueled by instant noodles and coffee might help you pass your exams. But they won’t help your brain remember things in the long term. Scientists have long known that learning with breaks in between helps your brain remember things longer than when you try to cram it all in one go. Called the “spacing effect,” the phenomenon was first described by German psychologist Hermann Ebbinghaus in...

Alzheimer’s Disease Tracked From The Beginning
2013-12-23 04:42:10

redOrbit Staff & Wire Reports - Your Universe Online By combining high-resolution functional MRI (fMRI) imaging scans in Alzheimer’s disease patients with mouse models of the neurodegenerative condition, researchers from Columbia University Medical Center (CUMC) have gained new insights into how, where and why the disease starts and spreads. The study, which was published Sunday in the online edition of Nature Neuroscience, will help enhance the medical community’s understanding...

How Brain Makes Toss Up Decisions
2013-12-06 13:48:39

Ranjini Raghunath for redOrbit.com - Your Universe Online Some decisions are easy, but when you have two equally appealing choices, how does your brain choose between the two? Scientists have long tried to figure out how toss-up decisions, such as what to eat, drink or watch on TV, are made. A new field of study called neuroeconomics uses theories from economics to try and understand how the brain weighs and picks some options over others. Although scientists have known such...

Anxiety And Social Phobias Made Worse By Missing 'Brake' In The Brain
2013-12-05 05:20:13

redOrbit Staff & Wire Reports - Your Universe Online A team led by researchers from the Medical University of Vienna has discovered one possible source of anxiety disorders and severe phobias – a missing inhibitory connection or “brake” in the brain. When experienced at a manageable level, fear can make people alert and help protect them against danger, it can also disrupt an individual’s sensory perception and reduce happiness when it becomes disproportionate. Now the...

Brain Geotags Memories
2013-11-29 09:35:21

Brett Smith for redOrbit.com - Your Universe Online On Twitter, users can categorize their post by using a hashtag, which connects the tagged post to all other posts with the same identifier. A new study in the journal Science has found that our brains do something similar, by ‘geotagging’ our memories to a specific location. Using experiments involving study participants navigating through a virtual town, the team of American and German scientists concluded that brain cells encode...

Navigation Abilities Brain Structure
2013-11-26 09:12:28

Brett Smith for redOrbit.com - Your Universe Online People who instantly know their way around after having traveled to a particular destination at least once have structurally different brains than those who require a map or GPS to navigate from place to place, new research shows. Doctoral researcher Joost Wegman at Radboud University Nijmegen in the Netherlands demonstrated that good navigators store relevant landmarks automatically along the way to their destination, while bad...

Decision Making Brain Region
2013-11-25 08:02:23

[ Watch the Video: Tiny Brain Region Linked To Decision Making ] redOrbit Staff & Wire Reports - Your Universe Online The lateral habenula may be one of the smallest parts of the brain, but according to new research in the journal Nature Neuroscience, it plays a big role when it comes to helping people make up their minds. The lateral habenula, which is believed to be one of the oldest parts of the brain in evolutionary terms and has previously been linked to depression and...

2013-11-21 12:32:51

A team of researchers at Inserm led by Cyril Herry (Inserm Unit 862, “Neurocentre Magendie,” Bordeaux) has just shown that interneurons located in the forebrain at the level of the prefrontal cortex are heavily involved in the control of fear responses. Using an approach combining in vivo recordings and optogenetic manipulations in mice, the researchers succeeded in showing that the inhibition of parvalbumin-expressing prefrontal interneurons triggers a chain reaction resulting in fear...


Latest Cerebrum Reference Libraries

Midbrain
2013-07-25 15:13:23

The midbrain, also known as the mesencephalon is the part of the brain most responsible for vision, motor control, arousal, temperature regulation, alertness and hearing. Formation and Orientation The midbrain is found under the cerebral cortex and above the hindbrain. The mesencephalon is not divided into any other portions of the brain unlike the other two vesicles that stem from the neural tube. There are four separate lobes on the side of the cerebral aqueduct within the...

Brain
2013-03-05 13:54:00

Formation and Orientation The development of the brain is broken down into stages. The basic evolution begins in the third week of the embryonic process where the neural plate is formed. By week four, the neural plate has developed into the neural tube. The anterior part of the tube, the telencephalon, grows rapidly as it prepares to later give way to the brain. As time goes on, cells begin to classify themselves as either neurons or glial cells, thus determining their functions. Glial...

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Word of the Day
grass-comber
  • A landsman who is making his first voyage at sea; a novice who enters naval service from rural life.
According to the OED, a grass-comber is also 'a sailor's term for one who has been a farm-labourer.'