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Ultra sensitive detection of radio waves with lasers
Date: Mar-09-2014Radio waves are used for many measurements and applications, for example, in communication with mobile phones, MRI scans, scientific experiments and cosmic observations. But 'noise' in the detector of the measuring instrument limits how sensitive and precise the measurements can be. Now researchers at the Niels Bohr Institute have developed a new method where they can avoid noise by means of laser light and can therefore achieve extreme precision of measurements. The results are published in the prestigious scientific journal, Nature.
Similarity breeds proximity in memory, NYU researchers find
Date: Mar-09-2014Researchers at New York University have identified the nature of brain activity that allows us to bridge time in our memories. Their findings, which appear in the latest issue of the journal Neuron, offer new insights into the temporal nature of how we store our recollections and may offer a pathway for addressing memory-related afflictions.
Just one drink may impair driving ability in older people
Date: Mar-09-2014The extent to which alcohol impairs the driving abilities of different age groups has been put to the test using a computer simulation. The researchers behind the investigation, from the University of Florida, publish their findings in the Psychopharmacology journal.The team tested two age groups, people aged 25 to 35 and people aged 55 to 70.The participants' driving abilities were measured in a task that had them drive down a simulated winding 3-mile stretch of country road.
New fins evolve repeatedly in teleost fishes
Date: Mar-09-2014Though present in more than 6,000 living species of fish, the adipose fin, a small appendage that lies between the dorsal fin and tail, has no clear function and is thought to be vestigial. However, a new study analyzing their origins finds that these fins arose repeatedly and independently in multiple species. In addition, adipose fins appear to have repeatedly and independently evolved a skeleton, offering a glimpse into how new tissue types and structural complexity evolve in vertebrate appendages.
Human activity influences beach bacterial diversity
Date: Mar-09-2014Human activity influences ocean beach bacterial communities, and bacterial diversity may indicate greater ecological health and resiliency to sewage contamination, according to results published March 5, 2014, in the open access journal PLOS ONE by Elizabeth Halliday from Woods Hole Oceanographic Institution and colleagues.Beaches all contain bacteria, but some bacteria are usually from sewage and may contaminate the water, posing a public health risk.
Emotions are not universally perceived
Date: Mar-08-2014It's a concept that had become universally understood: humans experience six basic emotions - happiness, sadness, anger, fear, disgust, and surprise - and use the same set of facial movements to express them. What's more, we can recognize emotions on another's face, whether that person hails from Boston or Borneo.The only problem with this concept, according to Northeastern University Distinguished Professor of Psychology Lisa Feldman Barrett, is that it isn't true at all.
Prehospital alerts let stroke patients skip the emergency room
Date: Mar-08-2014Prehospital stroke alerts by emergency medical services (EMS) personnel can shorten the time to effective treatment with "clot-busting" drugs for patients with stroke, according to a report in the March issue of Neurosurgery, official journal of the Congress of Neurological Surgeons. The journal is published by Lippincott Williams & Wilkins, a part of Wolters Kluwer Health.Dr. Mandy J. Binning and colleagues at the Capital Institute for Neurosciences (CIN) at Capital Health, Trenton and Pennington, N.J.
With flip of wrist, interventional radiologists treat uterine fibroids
Date: Mar-08-2014Interventional radiologists have devised a new way to access a woman's fibroids - by flipping her wrist and treating via an arm not groin artery - to nonsurgically shrink noncancerous growths in the muscular wall of the uterus. Researchers found this to be less painful and traumatic for women, allowing them to immediately sit up and move after uterine fibroid embolization (UFE) - with no overnight stay, according to a March article in the Society of Interventional Radiology's flagship publication, the Journal of Vascular and Interventional Radiology.
Adolescent relationship violence has mental health implications for victims, perpetrators
Date: Mar-08-2014Described by the Centers for Disease Control and Prevention as "physical, sexual, or psychological harm by a current or former partner or spouse," intimate partner violence (IPV) is a serious public health issue affecting millions of people in the United States. New research from sociologists at Bowling Green State University (BGSU) shows that adolescents and young adults who perpetrate or fall victim to IPV are more likely to experience an increase in symptoms of depression.
Darwin: It's not all sexual (selection)
Date: Mar-08-2014Since the days of Darwin, scientists have considered bird song to be an exclusively male trait, resulting from sexual selection. Now a team of researchers from the University of Maryland, Baltimore County (UMBC), the University of Melbourne in Australia, Leiden University in the Netherlands and The Australian National University says that's not the whole story.The team used information from several sources, including the Handbook of the Birds of the World.
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