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Recent News and Articles on the Keywords: mit + 13,800 + web  Related to the article below (Last Update: 8/5/2008)

Bounces and tightropes
Asia Times Online, Hong Kong - Jul 11, 2008
It has been fluctuating above 13800 for the past few days but has not even broken 14005. Even if it succeeds, there are still important resistances blocking ...
Source: Google News

… Language: Using NLP on a Massive Scale to Build High Dimensional Language Models from the Web
G Grefenstette - Proc of the 8 thCICLing Conference (Mexico City, Mexico, Feb. … - Springer
... element of the language model can be acquired: the relative frequencies of all the
words for a language on the web (under the ... h?lico?dal 13800 h?ligares 8 ...

Cover 4 -
G Hazeltine, L Martin, L Technologies, S … - ieeexplore.ieee.org
... The MIT Press ... COMPUTER SOCIETY INTERACTIVE The IEEE Computer Society's Web site,
at http://computer.org, offers information and samples from the society's ...

Trace elements in atmospheric aerosol in the heidelberg area, measured by instrumental neutron … -
J Bogen - Atmospheric Environment (1967), 1973 - Elsevier
... und die sich daraus ergebenden Mittelwerte verglichen mit Werten aus ... in a cellulose
web, called protec tion web in TABLE 1 ... t 01 004 Fe 1041 3500 13800 1900 Sc ...

Electron microscope autoradiographic investigation of 33 P in the intestinal epithelium of rachitic, … -
HW Sampson, JL Matthews - Calcified Tissue International, 1972 - Springer
... den hellen und dichten "core vesicles" ( Vesikeln mit hellem und ... aP labeling of the
microvilli and terminal web (tw) regions ... sap __ vitamin D at 6 h, ? 13800 ...
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[BOOK] Analyse von Vertriebsdaten mit Hilfe des Frontends Impromptu
K Dittmann - 2007 - books.google.com
Konstantin Dittmann Analyse vonVertriebsdaten mit Hilfe des Frontends Impromptu
Page 2. ... Konstantin Dittmann Analyse von Vertriebsdaten mit Hilfe des Frontends ...
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[PDF] Dopant-induced laser ablation of PMMA at 308 nm: Influence of the molecular weight of PMMA and of … -
T Lippert, A Wokaun, J Stebani, O Nuyken, J … - Angew. Makromol. Chem, 1993 - people.web.psi.ch
... Die mit den verschiedenen Pro- motoren erreichten Atzraten sind mit deren
photophysikalischen und photochemischen Eigenschaften in ... 5 4-methyl 13800 0.60 ...
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Quantifying the source of reentrant line variability and the effects of processes standardization on …
MC Peavey - 2007 - dspace.mit.edu
... Submitted to the Department of Civil and Environmental Engineering and The MIT Sloan
School of Management In Partial Fulfillment of the Requirements for the ...

The Color of Things: Towards the automatic acquisition of information for a descriptive dictionary -
G Grefenstette - Revue fran?aise de linguistique appliqu?e, 2005 - cairn.info
... 11400, red 10400, purple 6580 potato -- red 13800, white 9790 ... and formatting cues
for named entity acquisition from the Web. ... Cambridge (MA), MIT Press, 99-154. ...

[PDF] Overview of an Intelligent Sensorweb for Integrated Earth Sensing Project -
PM Teillet, A Chichagov, G Fedosejevs, RP Gauthier … - Proceedings of the 26th Canadian Symposium on Remote Sensing …, 2005 - earth.esa.int
... International, MacDonald Dettwiler Building, 13800 Commerce Parkway ... Table 3. Web
service interfaces of GeoSWIFT ... world)?, Technology Review (MIT?s Magazine ...

Interactive Shakespeare -
ST Cummings - Theatre Topics, 1998 - muse.jhu.edu
... action can meaningfully be considered as the web of links ... an on-line resource of
the MIT Interactive Shakespeare ... and of itself (<<Olivier Hamlet 2,13800,25511 ...
-

Source: Google Scholar

MIT Indentifies Mechanism Behind Fear - Work Could Lead To First Drug For Post-Traumatic Stress Disorder
Researchers from MIT's Picower Institute for Learning and Memory have uncovered a molecular mechanism that governs the formation of fears stemming from traumatic events. The work could lead to the first drug to treat the millions of adults who suffer each year from persistent, debilitating fears - including hundreds of soldiers returning from conflict in Iraq and Afghanistan.

The team will report their results in the July 15 advance online publication of Nature Neuroscience.

A study conducted by the Army in 2004 found that one in eight soldiers returning from Iraq reported symptoms of post-traumatic stress disorder (PTSD). According to the National Center for PTSD in the United States, around eight percent of the population will have PTSD symptoms at some point in their lives. Some 5.2 million adults have PTSD during a given year, the center reports.
Li-Huei Tsai, Picower Professor of Neuroscience in the Department of Brain and Cognitive Sciences, and colleagues show that inhibiting a kinase (kinases are enzymes that change proteins) called Cdk5 facilitates the extinction of fear learned in a particular context. Conversely, the learned fear persisted when the kinase's activity was increased in the hippocampus, the brain's center for storing memories.

Cdk5, paired with the protein p35, helps new brain cells, or neurons, form and migrate to their correct positions during early brain development. In the current work, the MIT researchers looked at how Cdk5 affects the ability to form and eliminate fear-related memories.

"Remarkably, inhibiting Cdk5 facilitated extinction of learned fear in mice. This data points to a promising therapeutic avenue to treat emotional disorders and raises hope for patients suffering from post-traumatic stress disorder or phobia," Tsai said.

Emotional disorders such as post-traumatic stress and panic attacks stem from the inability of the brain to stop experiencing the fear associated with a specific incident or series of incidents. For some people, upsetting memories of traumatic events do not go away on their own, or may even get worse over time, severely affecting their lives.

Treating these disorders involves methods geared toward making the behavior go away, or become extinct, but the molecular mechanisms underlying the extinction process are not well understood. However, Tsai said, studies have shown that some of the molecular machinery that initially encodes the troubling memories also regulates their extinction.

In the current work, genetically engineered mice received mild foot shocks in a certain environment and were re-exposed to the same environment without the foot shock. Mice with increased levels of Cdk5 activity had more trouble letting go--or extinguishing--the memory of the foot shock and continued to freeze in fear. Conversely, in mice whose Cdk5 activity was inhibited, the bad memory of the shocks disappeared when the mice learned that they no longer needed to fear the environment where the foot shocks had once occurred.


"In our study, we employ mice to show that extinction of learned fear depends on counteracting components of a molecular pathway involving the protein kinase Cdk5," said Tsai, a Howard Hughes Medical Institute investigator. "We found that Cdk5 activity prevents extinction, at least in part by negatively affecting the activity of another key kinase.

In addition to Tsai, authors include MIT affiliate Farahnaz Sananbenesi; Picower Institute research affiliates Andre Fischer and Xinyu Wang; Christina Schrick and Jelena Radulovic of Northwestern University; and Rachel Neve of McLean Hospital in Belmont, Mass.

This work was supported by the National Institutes of Health and the National Institute of Mental Health.

http://www.mit.edu
 
 
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