A groundbreaking study on mice reveals how stress hormones distort memory encoding, causing hazy recollections and fear overgeneralization. This discovery offers potential new avenues for treating PTSD and anxiety disorders, but also raises questions about cannabis use in these conditions.
Researchers at Johns Hopkins University have discovered that the psychedelic drug DOI (2,5-dimethoxy-4-iodoamphetamine) reduces anxiety by activating specific neurons in the brain. The study, published in Neuron, reveals that DOI works by influencing parvalbumin-positive interneurons in the ventral hippocampus, leading to a decrease in anxiety-related activity. The findings suggest potential therapeutic benefits for anxiety disorders without the hallucinogenic effects commonly associated with psychedelics.
Stress is a common experience, but it can have a significant impact on our mental and physical well-being. This article explores the science behind stress, detailing how it affects the brain and body, and provides practical tips for managing stress effectively. Learn about the signs of stress, the dangers of chronic stress, and resources for seeking help.
New research using brain scans suggests that we actively control how our brains segment daily memories, much like movie scenes. The study shows that our own attention and goals, not just changes in our environment, influence how we remember events.
Ever wondered why a cool glass of water feels so satisfying on a hot day? This article explores the intricate neurobiological mechanisms that trigger the pleasurable feeling of thirst quenching, from the initial dopamine rush to the intricate role of specific brain regions and hormones.
Have you ever wondered why some people can easily picture scenarios in their minds with vivid details, while others struggle to do so? Scientists are exploring the brain regions and factors that contribute to this ability, revealing how mental imagery can be both a personal skill and a learned one.
A new study in monkeys reveals how the anticipation of a large reward can actually hinder performance. Researchers discovered that the prospect of a big payoff can interfere with brain signals responsible for preparing us for tasks, leading to underperformance. This research sheds light on why we sometimes falter under pressure and offers potential avenues for improving performance in various contexts.
A new study suggests that the daily fluctuations in male hormones may contribute to brain shrinkage throughout the day. The brain appears to regain volume overnight, creating a cyclical pattern. This research sheds light on the dynamic interplay between hormones and brain structure, potentially challenging traditional views of hormonal variability in men.
A groundbreaking study has discovered microplastics in the human brain, highlighting the alarming reality of plastic pollution and its potential impact on human health. The research, conducted by scientists in Brazil and Germany, found microplastics in the olfactory bulb, suggesting that breathing in indoor environments could be a significant source of brain pollution. This discovery has sparked global calls for immediate action on plastic’s impact on human health, with experts demanding a strong UN Global Plastics Treaty to address the issue.
A neuroscientist’s own brain scans revealed significant changes during pregnancy, including a decrease in gray matter volume and an increase in white matter density. These findings shed light on the remarkable adaptations the brain undergoes during motherhood, providing a unique insight into the intricate relationship between pregnancy and brain structure.
