About two percent of all children suffer from Obsessive Compulsive Disorder (OCD), which consists of obsessive thoughts and acts. Obsessive thoughts are intrusive thoughts such as fear or contamination, injury or violent notions that are perceived to be pointless or distressing. Obsessive acts are ritualized acts that have to be repeated frequently, such as washing one's hands, asking questions, counting, touching, checking or collecting. Without treatment, OCD often has serious consequences, such as children no longer being able to go to school on account of their symptoms.
Brain
Children's reasoning about language and race can take unexpected turns, according to University of Chicago researchers, who found that for younger white children in particular, language can loom larger than race in defining a person's identity.
A co-evolutionary arms race exists between social insects and their parasites. Army ants (Leptogenys distinguenda) share their nests with several parasites such as beetles, snails and spiders. They also share their food with the kleptoparasitic silverfish (Malayatelura ponerophila). New research published in BioMed Central's open access journal BMC Ecology shows that the silverfish manage to hide amongst the ants by covering themselves in the ant's chemical scent.
ST. PAUL, Minn. – New research finds a marker used to detect plaque in the brain may help doctors make a more accurate diagnosis between two common types of dementia – Alzheimer's disease and frontotemporal lobar degeneration (FTLD). The study is published in the November 30, 2011, online issue of Neurology®, the medical journal of the American Academy of Neurology.
Cleveland -- A collaborative research group – led by researchers at Cleveland Clinic – published findings that indicate a one-time injection immediately after spinal cord injury can limit pain for an extended period of time.
Fibronectin – a protein that exists naturally in humans – supports the survival, growth and communication of neurons in the brain and spinal cord. The researchers discovered, through testing in an animal model, that an injection of fibronectin into the spinal cord activates specific signaling pathways and results in pain-curbing effects.
Medical researchers in Canada and the United States recently published their joint findings that fatal prion diseases, which include BSE or "mad cow disease," have a hidden signature.
Findings published this month in the peer-reviewed journal, Public Library of Science (PLoS) Pathogens, demonstrate that up to seven months before an animal shows physical signs of having a prion infection, a particular prion protein in the brain was being eradicated. This member of the prion family is known as shadoo protein.
Researchers have demonstrated, for the first time, a graphene-based transistor array that is compatible with living biological cells and capable of recording the electrical signals they generate. This proof-of-concept platform opens the way for further investigation of a promising new material. Graphene's distinctive combination of characteristics makes it a leading contender for future biomedical applications requiring a direct interface between microelectronic devices and nerve cells or other living tissue.
Bethesda, MD—A new research report appearing in the December issue of the FASEB Journal (http://www.fasebj.org) shows how scientists from the United Kingdom have developed a simple blood test to detect Parkinson's disease even at the earliest stages. The test is possible because scientists found a substance in the blood, called "phosphorylated alpha-synuclein," which is common in people with Parkinson's disease, and then developed a way to identify its presence in our blood.
One of the earliest known impairments caused by Alzheimer's disease - loss of sense of smell – can be restored by removing a plaque-forming protein in a mouse model of the disease, a study led by a Case Western Reserve University School of Medicine researcher finds.
The study confirms that the protein, called amyloid beta, causes the loss.
Jerusalem, Nov. 30, 2011 – What distinguishes information processing with conscious awareness from processing occurring without awareness? And, is there any role for conscious awareness in information processing, or is it just a byproduct, like the steam from the chimney of a train engine, which is significant, but has no functional role?
These questions - which have long puzzled psychologists, philosophers, and neurobiologists - were recently addressed in a study by Hebrew University of Jerusalem researchers and published by the journal Psychological Science.
Structures in the midbrain that developed early in evolution can be responsible for functions in newborns which in adults are taken over by the cerebral cortex. New evidence for this theory has been found in the visual system of monkeys by a team of researchers from the RUB. The scientists studied a reflex that stabilizes the image of a moving scene on the retina to prevent blur, the so-termed optokinetic nystagmus. They found that nuclei in the midbrain initially control this reflex and that signals from the cerebral cortex (neocortex) are only added later on. PD Dr.
Surgeons can learn their skills more quickly if they are taught how to control their eye movements. Research led by the University of Exeter shows that trainee surgeons learn technical surgical skills much more quickly and deal better with the stress of the operating theatre if they are taught to mimic the eye movements of experts. This research, published in the journal Surgical Endoscopy, could transform the way in which surgeons are trained to be ready for the operating theatre.
Scientists at the University of Hull have found that some people have the ability to hallucinate colours at will – even without the help of hypnosis.
The study, published this week in the journal Consciousness and Cognition, was carried out in the Department of Psychology at the University of Hull. It focused on a group of people that had shown themselves to be 'highly suggestible' in hypnosis.
Distrust is the central motivating factor behind why religious people dislike atheists, according to a new study led by University of British Columbia psychologists.
"Where there are religious majorities – that is, in most of the world – atheists are among the least trusted people," says lead author Will Gervais, a doctoral student in UBC's Dept. of Psychology. "With more than half a billion atheists worldwide, this prejudice has the potential to affect a substantial number of people."
CHICAGO – A functional magnetic resonance imaging (fMRI) analysis of long-term effects of violent video game play on the brain has found changes in brain regions associated with cognitive function and emotional control in young adult men after one week of game play. The results of the study were presented today at the annual meeting of the Radiological Society of North America (RSNA).