Summary: A new study finds that self-reported sleep complaints are a significant risk factor for Alzheimer’s disease in older women who carry a higher genetic predisposition. Using data from the Women Inflammation Tau Study, researchers show that poorer sleep quality is linked to faster accumulation of tau protein and declines in visual memory — but … Read more

Summary: A Canadian cross-sectional study finds that long-term exposure to common air pollutants—fine particulate matter (PM2.5) and nitrogen dioxide (NO2)—is associated with measurable declines in cognitive performance and with small, visible vascular brain changes on MRI. The analysis, conducted within the Canadian Alliance for Healthy Hearts and Minds (CAHHM) cohort, included nearly 6,900 middle-aged adults … Read more

Summary: A new study identifies dopamine dysfunction as an overlooked cause of memory loss in Alzheimer’s disease. By examining the entorhinal cortex—the brain’s gateway to the hippocampus and a key hub for memory processing—researchers found dopamine levels drop to under 20% of normal in an Alzheimer’s mouse model, causing memory-encoding circuits to fail. Importantly, the … Read more

Summary: Researchers have identified a promising drug target for Fragile X syndrome, the most common genetic cause of autism and intellectual disability. The study shows that loss of the FMR1 gene causes an abnormal, widespread increase of a synapse-localized protein called EPAC2 across multiple brain cell types. In mouse models, blocking EPAC2—either genetically or with … Read more

Summary: A national, peer-reviewed survey of 3,466 U.S. adolescents (ages 13–17) finds that nearly half of teenagers who have used conversational AI (CAI) chatbots experienced at least one form of digital, emotional, or behavioral harm. The research highlights how these tools—while often used for education and entertainment—are increasingly relied on for friendship, emotional support, and … Read more

Summary: A new structural biology study resolves a decades-old question in neuroscience: how brain receptors distinguish calcium from magnesium to enable learning and memory. Using single-particle cryo-electron microscopy (cryo-EM), high-performance computing, and electrophysiology validation, researchers captured more than 50,000 microscopic movies of the NMDA receptor (NMDAR) channel to reveal how a molecular filter selectively permits … Read more

Summary: A collaborative study finds that strong overall brain health can protect memory and thinking abilities from the early, damaging effects of Alzheimer’s disease. Researchers investigated why some older adults remain cognitively sharp despite showing early biological signs of Alzheimer’s. Their results indicate that preserved brain structure and overall brain integrity act as a significant … Read more

Summary: A new UC San Diego study finds that self-reported sleep complaints are an important risk factor for Alzheimer’s disease among older women who have a higher genetic predisposition. Drawing on data from the Women Inflammation Tau Study, researchers report that poor subjective sleep quality is linked to faster accumulation of tau protein in the … Read more

Summary: A new Canadian study links long-term exposure to common air pollutants with reduced cognitive performance and visible brain changes on MRI. The analysis, conducted within the Canadian Alliance for Healthy Hearts and Minds (CAHHM) cohort, evaluated nearly 7,000 middle-aged adults across five provinces and found associations between low-level pollution and poorer memory, comprehension, and … Read more

Summary: A new study reveals the first comprehensive neural blueprint describing how fruit flies (Drosophila melanogaster) produce ultra-fast escape behaviors. By analyzing a high-resolution electron microscopy connectome of the fly’s ventral nerve cord—the insect equivalent of a spinal cord—researchers mapped all 1,314 descending neurons and identified rare axo-axonic synapses that modulate and synchronize motor commands … Read more