Brain Function
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How marijuana makes you vague
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News in Science 30/3/2001 How marijuana makes you vague [This is the print version of story ] New research adds weight to the idea that marijuana disrupts memory and other thought processes. A team of US researchers reporting in this week's Nature have pinpointed a mechanism by which marijuana could affect memory. It involves the discovery that cannabinoids - the body's own marijuana-like chemicals - play a role in the brain pathways essential for co-ordination of thoughts and actions, memory an ...
High-Fat Diet Linked With Impaired Brain Function
(8 Messages)
This story raises a whole lot of questions. I'm going to copy the journal article when I get down to the medical library Monday (having another echo- please pray or send positive vibes) so I can read the specifics. High-Fat Diet Linked With Impaired Brain Function found in Neurobiol Learning Memory 2001;75 ---------------------------------------------------------------------------
Amyloids, accelerated resolution to brain and body function issues
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Its become plainly evident that the de-amyloidizatoin is having its greatest benefits as it nears 100% removal by a factor of 10 or 20 to one at least. Mabye 100 to 1. It seems that if just a relative few nodes in the brain, and distributed brain function throught the body.. synapses or clusters of them (ganglia)..are still occluded with amyloids that these act to block transmissions from clear and functional sections of the brain., clouding all of it up. The type of amyloid that burns off with ...
Transplant victim loses brain function
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By EMERY P. DALESIO, Associated Press Writer DURHAM, N.C. - The teenage girl who was put through two heart-lung transplants because the first set of organs didn't match her blood type had lost all brain activity Saturday, and blood was no longer flowing to her brain, a hospital spokesman said. The hospital had not yet declared Jesica Santillan brain dead, but her family was meeting with doctors to discuss the next step. Duke University Medical Center spokesman Richard Puff said Saturday that tes ...
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Brain SPECT Imaging - ADD, ADHD, Alzheimers, Anxiety, Autism, Bipolar Brain SPECT Imaging by Brain Matters See your Brain in Action Brain SPECT Imaging by Brain Matters utilizes the latest in high-resolution brain SPECT imaging (Single Photon Emission Computed Tomography) to evaluate brain activity by tracing blood flow in the brain. Tracing blood flow allows us to observe the brain's actual metabolic process and its activities. By using a brain SPECT imaging scan to examine those areas of the brain that have too much or too little blood flow, we can determine which areas of the brain ...
Discovery Challenges Thinking on Key Brain Function | LiveScience A new study finds that a cell once believed to serve neurons instead may perform the crucial function of regulating blood flow in the brain. The discovery challenges a basic assumption in neuroscience and could have implications for interpreting brain scans and understanding what occurs during brain trauma and Alzheimer's disease. Oxygen is the main fuel of biological cells. It is transported throughout the body by way of the circulatory system. Not surprisingly, the brain is one of the most voracious consumers of oxygen, and a basic assumption in neuroscience is that the more active a brain region is, the more ...
Brain Function and Pathology Ventral View ( From bottom) T he outermost layer of the cerebral hemisphere which is composed of gray matter. Cortices are asymmetrical. Both hemispheres are able to analyze sensory data, perform memory functions, learn new information, form thoughts and make decisions. Left Hemisphere S equential Analysis: systematic, logical interpretation of information. Interpretation and production of symbolic information:language, mathematics, abstraction and reasoning. Memory stored in a language format. Right Hemisphere H olistic Functioning: processing multi-sensory input simultaneously to provide "holistic" picture of one's ...
ScienceDaily: Differences In Brain Function Found For Attention Follow-up studies will be required before the results of this study on a small number of boys can lead to brain-based methods of diagnosis, caution the lead researchers, Research Associate Chandan Vaidya and Associate Professor John Gabrieli of Stanford's Department of Psychology. Theirs is the first study, however, to show that Ritalin, the drug most commonly used to treat ADD, has different effects on the brains of people with and without ADD, and where those differences occur in the brain. The findings are reported in the Nov. 24 issue of the Proceedings of the National Academy of Sciences.
The study is also the first to use functional magnetic resonance imaging [FMRI] in the study of ADD. This imaging method can show brain differences in individual people, instead of in averages of differences of two groups. This is critical for diagnosis, which has to be established on an individual basis. Unlike methods used in other studies of ADD, FMRI does not require injection or inhalation of radioactive substances. It relies instead on naturally occurring changes in brain function, which makes it appropriate for research and clinical purposes for children.
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Brain blood flow helps treat depression Brain blood flow helps treat depression JERUSALEM, Aug. 13 (UPI) -- Israeli scientists have confirmed the usefulness of established molecular imaging approaches in the treatment of depression. "Individuals in a depressed emotional state have impaired cerebral blood flow," said Associate Professor Omer Bonne at Hadassah-Hebrew University Medical Center in Jerusalem. "Clinical improvement in depression is accompanied by diverse changes in cerebral blood flow, according to whether patients are treated with medication or electroconvulsive treatment." The researchers ...
Severe Trauma Affects Kids' Brain Function, Say Researchers The researchers used an experimental technique called functional magnetic resonance imaging, or fMRI, to compare brain activation patterns in 16 children with symptoms of PTSD with the patterns seen in 14 age- and gender-matched non-traumatized children as they performed a simple decision-making task. The fMRI analysis detects changes in blood flow and oxygenation that correlate with increased neuronal activity in different regions of the brain.
To conduct the test, study subjects were placed inside the fMRI machine - a body-sized, narrow, hollow tube - and then asked to push a button each time a letter other than X flashed on a screen in front of them. Because Xs were introduced only after a string of non-Xs, the test is a good way to measure what's known as response inhibition, or a subject's ability to suppress the natural tendency to push the button as soon as any letter appears. Response inhibition is often difficult for children and adults with PTSD.
Bipolar disorder 'shrinks brain ' MOST E-MAILED MOST READ Girl overdoses on espresso coffee 'Red Army' virus to combat MRSA Chinese toy boss 'kills himself' Nigerian outrage over nude video School condemns 'chav-hunt' spoof Most popular now, in detail MOST E-MAILED MOST READ Daughter's letter to dying father Girl overdoses on espresso coffee School condemns 'chav-hunt' spoof 'Mooning' student in African jail Chinese toy boss 'kills himself' Most popular now, in detail
When Worry Hijacks The Brain Even the most stable brain operates just a millimeter from madness. In such a finely tuned cognitive engine, only a small part must start to sputter before the whole machine comes crashing down. When that happens, reason and function come undone, rarely as dramatically as in the neurochemical storm that is obsessive-compulsive disorder.
Say you leave work at 6 p.m. for what should be a 12-minute drive home. Say just as you're pulling onto the street, a child on a bicycle crosses in front of you. A few feet later, you feel the thump of a pothole. But what if it wasn't a pothole? Suppose you hit the child. You look in your rearview mirror, and all is clear, but can you be sure? So you circle back around the block. Still clear--except for a lumpy bag of leaves on the curb. But is it a bag or a child? So you circle once more. Four hours later, you finally arrive home, mutter something to your spouse about a late meeting ...
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Explosive anger 'a brain disorder People with an explosive temper may be suffering from a brain disorder, according to research. US psychologists say violent acts such as wife beating could be caused by a chemical imbalance in the brain. These results are encouraging but they need to be verified by brain imaging techniques Dr Tonmoy Sharma, clinical psychiatrist Doctors have long known that some types of head injury lead to outbursts of aggression. But this is the first time that uncontrollable anger has been linked to a problem in the way the brain functions. A team at the Children's Hospital ...
Severe Trauma Affects Kids' Brain Function Severe Trauma Affects Kids' Brain Function Severe trauma affects kids' brain function, say Stanford/Packard Researchers July 27, 2007 STANFORD, Calif. — The first study to examine brain activity patterns in severely traumatized children showed their brains function differently than those of healthy children, say researchers at the Stanford University School of Medicine and Lucile Packard Children’s Hospital. The study hints at the biological underpinnings of the disorder called PTSD, or post-traumatic stress disorder. It also provides a valuable benchmark ...
Brain In animals, the brain, or encephalon (Greek for “in the head”), is the control center of the central nervous system. In most animals, the brain is located in the head, protected by the skull and close to the primary sensory apparatus of vision, hearing, equilibrioception, taste and olfaction. In humans, it is an organ of thought. While all vertebrates have a brain, invertebrates have either a centralized brain or collections of individual ganglia. Brains can be extremely complex. For example, the human brain contains more than 100 billion neurons, each linked to as many as 10,000 others.
Most brains exhibit a substantial distinction between gray matter and white matter. Gray matter consists of the cell bodies of the neurons, while white matter consists of the fibers (axons) which connect neurons. The axons are surrounded by a fatty insulating sheath called myelin (oligodendroglia cells), giving the white matter its distinctive color. The outer layer of the brain is gray matter called cerebral cortex. Deep in the brain, compartments of white matter (fasciculi, fiber tracts), gray matter (nuclei) and spaces filled ...