Medicine articlesDiscoveries shed new light on how the brain processes what the eye sees
Researchers at the Center for Molecular and Behavioral Neuroscience (CMBN) at Rutgers University in Newark have identified the need to develop a new framework for understanding "perceptual stability" and how we see the world with their discovery that visual input obtained during eye movements is being processed by the brain but blocked from awareness.
People who wear rose-coloured glasses see more
A University of Toronto study provides the first direct evidence that our mood literally changes the way our visual system filters our perceptual experience suggesting that seeing the world through rose-coloured glasses is more biological reality than metaphor.
Researchers develop light-treatment device to improve sleep quality in the elderly
Sleep disturbances increase as we age. Some studies report more than half of seniors 65 years of age or older suffer from chronic sleep disturbances. Researchers have long believed that the sleep disturbances common among the elderly often result from a disruption of the body's circadian rhythms - biological cycles that repeat approximately every 24 hours.
Half of your friends lost in seven years
Had a good chat with someone recently? Has a good friend just helped you to do up your home? Then you will be lucky if that person still does that in seven years time. Sociologist Gerald Mollenhorst investigated how the context in which we meet people influences our social network. One of his conclusions: you lose about half of your close network members every seven years.
Humans nonverbal status cues alter perceived size
Nonverbal dominance displays in many non-human species are known to increase the displayer's apparent size. Now researchers led by assistant professor of psychology Abigail Marsh have found that humans also employ a variety of nonverbal cues that make them appear larger or smaller. Physical size, the researchers say, is closely linked to social dominance.
Adult bone marrow stem cells injected into skeletal muscle can repair heart tissue
University at Buffalo researchers have demonstrated for the first time that injecting adult bone marrow stem cells into skeletal muscle can repair cardiac tissue, reversing heart failure.
'Shock and kill' research gives new hope for HIV-1 eradication
Latent HIV genes can be 'smoked out' of human cells. The so-called 'shock and kill' technique, described in a preclinical study in BioMed Central's open access journal Retrovirology, might represent a new milestone along the way to the discovery of a cure for HIV/AIDS.
Stress makes your hair go gray
Those pesky graying hairs that tend to crop up with age really are signs of stress, reveals a new report in the June 12 issue of Cell, a Cell Press publication.
If the shoe flits, duck: a real-life example of humans' dual vision system
It's rare when real-world events perfectly mirror experiments that scientists are conducting. That's why neuroscientists at the University of Washington were delighted at the reactions of former President George W. Bush and Iraq's Prime Minister Nouri al-Maliki when an Iraqi reporter flung his shoes toward the two men during a Baghdad news conference.
Cancer: the cost of being smarter than chimps?
Are the cognitively superior brains of humans, in part, responsible for our higher rates of cancer? That's a question that has nagged at John McDonald, chair of Georgia Tech's School of Biology and chief research scientist at the Ovarian Cancer Institute, for a while. Now, after an initial study, it seems that McDonald is on to something. The new study is available online in the journal Medical Hypothesis and will appear in the forthcoming issue of the journal.
The sweet taste of uncertainty: winners enjoy waiting to discover what they've won
You've just won a prize. Would you like to find out what it is right away, or wait until later? A new study in the Journal of Consumer Research says most people are happier waiting.
Brain regions responsible for empathy mapped by Columbia researchers
Columbia University researchers have shown for the first time that two brain systems are primarily responsible for allowing humans to accurately predict the emotions of others. Psychology professors Kevin Ochsner and Niall Bolger, graduate student Jamil Zaki and research assistant Jochen Weber used functional MRI scans to zero in on the parts of the brain that people use when correctly discerning how others are feeling.
It really is best to sleep on it
The saying "Sleep on it" is turning out to be true. Researchers at the Laboratoire de physiologie de la perception et de l'action (LPPA, a CNRS/Collège de France research unit) and at the University of Amsterdam have shown that the brain replays the day's events while asleep. They have discovered that the information consolidated during sleep leads to the best decision-making while awake.
Don't stand so close to me: proximity defines how we think of contagion
We judge probability and make risk judgments all the time, such as when we try new products or consider which stocks to trade. It would seem that our decisions would be rational and based on concrete factors; however, we are not always so pragmatic. Some judgments are not based solely on relevant information but can be influenced by subjective beliefs.
Potential for non-invasive brain tumor treatment
Duke University engineers have taken a first step toward a minimally invasive treatment of brain tumors by combining chemotherapy with heat administered from the end of a catheter.
Scientists capture the first image of memories being made
The ability to learn and to establish new memories is essential to our daily existence and identity; enabling us to navigate through the world. A new study by researchers at the Montreal Neurological Institute and Hospital (The Neuro), McGill University and University of California, Los Angeles has captured an image for the first time of a mechanism, specifically protein translation, which underlies long-term memory formation.
Imaging the hypnotized brain: neural mechanisms of suggested paralysis
Although there is no doubt that hypnosis can impact the mind and behavior, the underlying brain mechanisms are not well understood. Now, new research provides fascinating insight into the specific neural effect of the power of suggestion. The study, published by Cell Press in the June 25 issue of the journal Neuron, uncovers the influence of hypnotic paralysis on brain networks involved in internal representations and self imagery.
Changes in brain architecture may be driven by different cognitive challenges
Scientists trying to understand how the brains of animals evolve have found that evolutionary changes in brain structure reflect the types of social interactions and environmental stimuli different species face.
Backing up your brain: McGill researchers discover how old memories are re-saved and changed
Researchers at McGill University have discovered a series of molecular mechanisms that regulate how our brains call up, restore and even change old memories. This process, called memory reconsolidation, radically alters our understanding of how memory works.
A penny for your prions
North Carolina State University researchers have discovered a link between copper and the normal functioning of prion proteins, which are associated with transmissible spongiform encephalopathy diseases such as Cruetzfeldt-Jakob in humans or "mad cow" disease in cattle. Their work could have implications for patients suffering from these diseases, as well as from other prion-related diseases such as Alzheimers or Parkinson's.