Our most vivid dreams are a remarkable replication of reality, combining disparate objects, actions and perceptions into a richly detailed hallucinatory experience. How does our brain accomplish this? It has long been suspected that the hippocampus contributes to dreaming, in part due to its close association with memory: according to one estimate, about half of all dreams contain at least one element originating from a specific experience while the subject was awake (Fosse et al.
People suffering from post-traumatic stress disorder report that cannabis reduces the severity of their symptoms by more than half, at least in the short term, according to a recent study led by Carrie Cuttler, a Washington State University assistant professor of psychology. Cuttler and her colleagues analyzed data of more than 400 people who tracked changes in their PTSD symptoms before and after cannabis use with Strainprint, an app developed to help users learn what types of medical cannabis work best for their symptoms.
The development of a 2D nanosheet 1,000 times smaller than a strand of hair could advance cancer treatment and regenerative medicine, say researchers. The new class of 2D nanosheets called molybdenum disulfide can adsorb near infrared (NIR) light and modify cell behavior. These nanosheets are an emerging class of materials that have shown distinct physical and chemical properties due to their unique shape and size. Recently, some nanosheets have been explored for biomedical applications due to their light-responsive ability.
If a two-year-old child living in poverty in India or Bangladesh gets sick with a common bacterial infection, there is more than a 50% chance an antibiotic treatment will fail. Somehow the child has acquired an antibiotic resistant infection – even to drugs to which they may never have been exposed. How? Unfortunately, this child also lives in a place with limited clean water and less waste management, bringing them into frequent contact with faecal matter.
Psychiatric patients with higher levels of an antioxidant called glutathione responded more quickly to medication for psychosis and had improved outcomes, a study from Schulich and Lawson Health Research Institute reports. Once patients with psychosis start treatment, some get better in weeks while it can take months for others. Past research has shown that patients who experience their first episode of psychosis and respond early to treatment have better overall outcomes.
Never before have we experienced social isolation on a massive scale as we have during the evolving COVID-19 pandemic. A new paper explores the wide-ranging, negative consequences that social isolation has on our psychological well-being and physical health, including decreased life span. Loneliness directly impairs the immune system, making us less resistant to diseases and infections. Indeed, feeling lonely and having few friends can result in a particularly poor immune defence.
The brain uses a mathematical system to organize visual objects according to their principal components, researchers at Caltech have found. The work shows that the brain contains a two-dimensional map of cells representing different objects. The location of each cell in this map is determined by the principal components (or features) of its preferred objects; for example, cells that respond to round, curvy objects like faces and apples are grouped together, while cells that respond to spiky objects like helicopters or chairs form another group.
Scientists from the University of Nottingham developed an initial prototype of a new generation of brain scanner in 2018 which is a lightweight device that can be worn on the head like a hat, and can scan the brain even whilst a patient moves. Their latest research has now expanded this to a fully functional 49 channel device that can be used to scan the whole brain and track electrophysiological processes that are implicated in a number of mental health problems.