Brain

Children with a rather mysterious movement disorder can have hundreds of attacks every day in which they inexplicably make sudden movements or sudden changes in the speed of their movements. New evidence reported in an early online publication from the January 2012 inaugural issue of Cell Reports, the first open-access journal of Cell Press, provides an answer for them. Contrary to expectations, the trouble stems from a defective version of a little-known gene that is important for communication from one neuron to the next.

You're in search of a new coffee maker, and the simple quest becomes, well, an ordeal. After doing copious amounts of research and reading dozens of consumer reviews, you finally make a purchase, only to wonder: "Was this the right choice? Could I do better? What is the return policy?"

Reality check: Is this you?

If so, new research from Florida State University may shed some light on your inability to make a decision that you'll be happy with.

A common oral bacteria, Fusobacterium nucleatum, acts like a key to open a door in human blood vessels and leads the way for it and other bacteria like Escherichia coli to invade the body through the blood and make people sick, according to dental researchers at Case Western Reserve University.

Yiping Han, professor of periodontics at the Case Western Reserve School of Dental Medicine, made the discovery in her continued work with the Fusobacterium nucleatum bacterium, one of the most prevalent of the more than 700 bacteria in the mouth.

DURHAM, N.H. – A new study from the University of New Hampshire Crimes against Children Research Center finds declines in two kinds of youth Internet sexual encounters of great concern to parents: unwanted sexual solicitations and unwanted exposure to pornography. The researchers suspect that greater public awareness may have been, in part, what has helped.

New Caledonian crows have, in the past, distinguished themselves with their advanced tool using abilities. A team of researchers from the University of Auckland and the University of Cambridge have now shown these crows can learn to use new types of tools.

When confronted with the Aesop's fable paradigm, which requires stones to be dropped into a water-filled tube to bring floating food within reach, the crows quickly learned to use stones as tools.

Doctors use similar brain mechanisms to make diagnoses and to name objects, according to a study published in the Dec. 14 issue of the online journal PLoS ONE and led by Marcio Melo of the University of Sao Paulo in Brazil.

Doctors often make diagnoses within their first moments of interaction with a patient. To investigate the neural processes involved in this quick diagnostic process, the researchers used functional MRI scanning to assess the cerebral activity in doctors while they diagnosed lesions in chest X-rays.

ST. PAUL, Minn. – Imagine waking up and being unable to see or recognize anything on the left side of your body. This condition, called hemispatial neglect, is common after a stroke that occurs on the right side of the brain. The current treatment of attention and concentration training using computer and pencil-and-paper tasks is inadequate.

A new drug candidate may be the first capable of halting the devastating mental decline of Alzheimer's disease, based on the findings of a study published today in PLoS one.

When given to mice with Alzheimer's, the drug, known as J147, improved memory and prevented brain damage caused by the disease. The new compound, developed by scientists at the Salk Institute for Biological Studies, could be tested for treatment of the disease in humans in the near future.

DETROIT -- A Wayne State University study published in the January 2012 issue of the journal Epidemiology points out that two influential early studies of cellphone use and crash risk may have overestimated the relative risk of conversation on cellphones while driving.

DURHAM, N.C. -- A father in Louisiana bludgeoned and beheaded his disabled 7-year-old son last August because he no longer wanted to care for the boy.

For most people, such a heinous act is unconscionable.

HOUSTON - (Dec. 14, 2011) – Poets might scoff at the notion that heart and brain are closely related, but scientists led by those at Baylor College of Medicine (www.bcm.edu) say a genetic defect that affects the brain can stop a heart.

The ability to trust, love, and resolve conflict with loved ones starts in childhood—way earlier than you may think. That is one message of a new review of the literature in Current Directions in Psychological Science, a journal published by the Association for Psychological Science. "Your interpersonal experiences with your mother during the first 12 to 18 months of life predict your behavior in romantic relationships 20 years later," says psychologist Jeffry A. Simpson, the author, with University of Minnesota colleagues W. Andrew Collins and Jessica E. Salvatore.

Compared to Neanderthals, modern humans have a better sense of smell.

Differences in the temporal lobes and olfactory bulbs also suggest a combined use of brain functions related to cognition and olfaction.

The increase of brain size is intimately linked to the evolution of humanity. Two different human species, Neanderthals and modern humans, have independently evolved brains of roughly the same size but with differing shapes. This could indicate a difference in the underlying brain organization.

With 100 billion nerve cells, the brain is the most complex organ in the human body. "We want to understand the development program behind," says Dr. Steffen Scholpp from the ITG. "We want to find out how individual parts of the brain develop, this means, what makes precursor cells build a specialized area such as the thalamus." Scholpp's group at ITG studies the development of the thalamus.