A new neuroimaging study has uncovered associations between subclinical narcissistic traits and regional grey matter volumes in the brain, specifically in the insular cortex and multiple prefrontal regions. The research, conducted by scientists at the University of Jena in Germany, provides novel evidence that narcissistic personality tendencies are linked to structural variations in brain networks …
Nitric oxide (NO) is a surprising gaseous neurotransmitter in the brain that also contributes to neurotoxicity when produced in excess. Nitric Oxide Facts: NO is synthesized on demand in neurons and diffuses to activate receptor enzymes rather than binding to membrane receptors. As a novel neurotransmitter, NO may mediate memory, plasticity, and retrograde signaling. Too …
The pineal gland is a pea-sized organ located in the center of the brain that has recently garnered attention for its potential role in brain health and aging. New research suggests that calcification of the pineal gland may contribute to neurodegenerative diseases and accelerated aging. Understanding how to protect and potentially rejuvenate this important gland …
Pesticides are chemicals commonly used worldwide to control unwanted organisms and disease vectors. However, research shows that chronic pesticide exposure may impair brain health and contribute to neurodegenerative diseases like Parkinson’s and Alzheimer’s. Key facts: Pesticides like organochlorines, organophosphates, pyrethroids, and mitochondrial complex I inhibitors can damage neurons and brain cell function through mechanisms like …
The brain’s ability to inhibit unwanted thoughts and actions is crucial for self-control and mental health. New research provides fascinating insights into how low-frequency alpha brain waves and default mode networks are associated with individual differences in behavioral inhibition. Key Takeaways: The 8-10 Hz low-alpha frequency band, rather than total or high-alpha bands, was most …
Obesity can lead to impaired learning, memory and cognitive decline, but the underlying mechanisms are not fully understood. A new mouse study reveals how obesity disrupts key signaling pathways in the brain, and shows the potential of two diabetes drugs, semaglutide and empagliflozin, to counteract these effects. Key Findings: Obesity impaired spatial learning and memory …
Albert Einstein’s extraordinary intelligence and genius have long intrigued scientists. Now, new analysis of photographs of Einstein’s brain reveals enhanced connections between the two hemispheres, providing clues into the neurological basis for his remarkable abilities. Key Facts: Researchers analyzed high-resolution photos of Einstein’s corpus callosum, the band of fibers connecting the brain’s hemispheres, and compared …
The corpus callosum is the thick band of nerve fibers that connects the left and right hemispheres of the brain, acting like a superhighway to allow communication between the two sides. Given its role in integrating information, researchers have long speculated that the size and structure of the corpus callosum may be linked to intellectual …
Phrenology, the pseudoscience of linking personality traits to head shape, has captivated minds for over 200 years despite lacking empirical evidence. A recent study took a novel approach to finally settling the debate – utilizing modern neuroimaging and big data to rigorously test phrenological claims. The results provide a definitive refutation of phrenology’s core premise. …
Researchers have long suspected that brain size affects intelligence, with people who have bigger brains tending to have higher IQs. A new set of studies provides compelling evidence that this relationship is likely causal and not just correlational. Key Takeaways: Among siblings, the one with the larger brain size tends to have the higher IQ. …
