Fear does not always fade once danger is gone. Yet the brain has mechanisms to suppress it. Recent research suggests that dopamine, beyond its role in pleasure, may play a key role in extinguishing fear. Fear is a vital instinct. It alerts, protects, and ensures survival. When this mechanism becomes dysregulated, fear can persist long…
Ultra-weak photon emissions have been measured from the human brain. A finding that could expand how we study brain activity. Our brain never ceases to surprise us. After revealing its electrical waves and magnetic fields, it unveils another secret: it emits light. Researchers have detected photons—those tiny particles of light—escaping from the heads of volunteers…
Can we restore plasticity in an Alzheimer’s brain? Early experimental findings suggest it may be possible. Alzheimer’s disease affects millions worldwide and still lacks a curative treatment. Existing medications mostly target amyloid plaques and tau proteins, but they fail to halt cognitive decline. Neuroscientists now agree that the real casualties of this disease are the…
Under extreme effort, the brain doesn’t just endure, it adapts by mobilizing its own reserves. What if running a marathon didn’t just drain your muscles, but also quietly reshaped the very structure of your brain? At the heart of this transformation lies a subtle but essential player: myelin. This sheath, which insulates nerve fibers, isn’t…
Between tradition and biology, fasting is as intriguing as it is fascinating. Behind deprivation lies a still misunderstood intelligence of the body. For millennia, fasting has been practiced across cultures and traditions as an act of discipline and spiritual elevation. Far more than mere deprivation, it represents a return to the essentials, an exercise in…
The brain ages, but does it truly lose its ability to regenerate? Stem cells may reshape how we understand time. The human brain, with its remarkable architecture of billions of interconnected neurons, was long considered to be fixed once maturity was reached. For decades, scientists believed that, unlike other tissues in the body, the brain…
What if the true architects of brain adaptation were not neurons alone? For a long time, we believed that neurons alone were responsible for shaping our thoughts, memories, and adaptive capabilities. This perspective, firmly rooted in classic neuroscience research, led to the significant undervaluation of glial cells, particularly astrocytes. For decades, these cells were merely…
Six weeks of running in grandfather mice, and the grand-offspring learn better. This unexpected carryover points to epigenetics, possibly involving microRNAs. The influence of physical exercise on our well-being is a widely studied topic in the health sciences. There is compelling evidence that regular activity enhances physical fitness, mental health, and even longevity. However, an…