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The good and bad side of dopamine

The chemical dopamine induces both desire and dread, according to new animal research in the July 9 issue of The Journal of Neuroscience. Although dopamine is well known to motivate animals and people to seek positive rewards, the study indicates that it also can promote negative feelings like fear.

9 Jul 2008

93-year old man with life threatening aneurysm treated using new fenestrated endograft stent

In a New York City metro-area first, a 93-year-old Bronx man underwent implantation of a new stent graft at NewYork-Presbyterian Hospital, the only center on the Eastern Seaboard with access to this investigational device. The new stent graft was implanted under an FDA-approved clinical trial protocol.

7 Jul 2008

New comprehensive map of brain connections

An international team of researchers has created the first complete high-resolution map of how millions of neural fibers in the human cerebral cortex -- the outer layer of the brain responsible for higher level thinking -- connect and communicate. Their groundbreaking work identified a single network core, or hub, that may be key to the workings of both hemispheres of the brain.

30 Jun 2008

Tongue-operated assistive technology lets persons with disabilities operate powered wheelchairs

A new assistive technology developed by engineers at the Georgia Institute of Technology could help individuals with severe disabilities lead more independent lives.

30 Jun 2008

New device blocks stomach nerve signals - alternative to existing bariatric surgeries

A new implantable medical device, developed in collaboration with Mayo Clinic researchers, shows promise as a reversible and less extreme alternative to existing bariatric surgeries, according to findings published in the current issue of the journal Surgery.

26 Jun 2008

New details on how low blood flow promotes vascular disease

Researchers have found the first direct proof that a key protein drives the clogging of arteries in two ways, and that lowering levels of it opens them up, according to study results published in the June edition of the journal Circulation.

24 Jun 2008

Study provides direct proof on how key protein promotes vascular disease

23 Jun 2008

Some muscles controlling facial expressions are not common to everyone

Laugh and the world laughs with you, but wrinkle your nose and you could find yourself on your own. A new study by a scientist at the University of Portsmouth who examined the facial muscles in cadavers, has revealed that the muscles which control our facial expressions are not common to everyone.

16 Jun 2008

Analysis of alcoholics' brains suggests treatment target

An analysis of brain tissue samples from chronic alcoholics reveals changes that occur at the molecular level in alcohol abuse - and suggests a potential treatment target, according to researchers from Wake Forest University School of Medicine.

2 May 2008

New discovery on how memory is stored

Researchers at Wake Forest University School of Medicine are the first to show that the location of protein-destroying "machines" in nerve cells in the brain may play an important role in how memories are formed - a finding with potential implications for treating Alzheimer's and other brain diseases. The research is published in the current issue of Learning & Memory.

23 Apr 2008

MRI best for looking at breast cancer

The use of MRI is effective in differentiating the blood supply to medial and lateral breast tumors, which is important in treatment planning and prognosis according to a study conducted by researchers at the University of Miami in Miami, FL and the Rabin Medical Center in Petah Tikva, Israel.

13 Apr 2008

Anticipation of laughter reduces levels of stress hormones

In 2006 researchers investigating the interaction between the brain, behavior, and the immune system found that simply anticipating a mirthful laughter experience boosted health-protecting hormones.

8 Apr 2008

Exercise during pregnancy benefits fetuses as well as mothers

Studies have shown that exercise has a positive effect on mothers-to-be, and no detrimental impact on their developing offspring.

8 Apr 2008

Leaky blood vessels open up nerve cells to toxic assault In Lou Gehrig's disease

Leaky blood vessels that lose their ability to protect the spinal cord from toxins may play a role in the development of amyotrophic lateral sclerosis, better known as ALS or Lou Gehrig's disease, according to research published in the April issue of Nature Neuroscience.

7 Apr 2008

Teenage brains are different

Many parents are convinced that the brains of their teenage offspring are different than those of children and adults.

31 Mar 2008

Discovery of new type of retinal cell

Harvard University researchers have discovered a new type of retinal cell that plays an exclusive and unusual role in mice: detecting upward motion.

31 Mar 2008

New insight into how epilepsy may develop

An increased number of neuron "hubs" in the epileptic brain may be the root cause for the seizures that characterize the disorder, according to a UC Irvine study.

26 Mar 2008

New hope for children with bilateral Wilms tumors

Physicians at St. Jude Children's Research Hospital have demonstrated that children with bilateral Wilms tumor, a cancer of the kidneys, can retain normal function in both kidneys by undergoing a procedure called bilateral nephron-sparing surgery, even when preoperative scans suggest that the tumors are inoperable.

25 Mar 2008

New technique improves outcome for living donor liver transplants

The University of Alberta Hospital (UAH) is one of only a few centers in Canada that perform living donor liver transplantation, a surgical procedure developed in the late 1980s that expands the organ donor pool. About 80 liver transplants are done a year in Alberta, 10 of those being living-donor.

19 Mar 2008

Study shows how nerve cells in visual cortex adapt to changing images

Neuroscientists studying the mind's ability to process images have completed the first empirical study to demonstrate, using animal models, how populations of nerve cells in visual cortex adapt to changing images.

13 Mar 2008