Summary: A new preclinical study from Northwestern University describes a structural reason why women face higher risk of Alzheimer’s disease (AD). Instead of focusing solely on neurons or glia, researchers examined the brain’s extracellular matrix (ECM) — the non-cellular “mortar” that fills spaces between cells — and found that age-related loss of brain estrogen in … Read more

Summary: Researchers have overturned the common belief that falling asleep easily after drinking coffee means caffeine had no effect. Using quantitative electroencephalography (EEG) to read brain electrical activity, investigators found that even when sleep duration and subjective restfulness appear normal, caffeine substantially reduces slow-wave activity during sleep. This reduction alters the brain’s internal architecture toward … Read more

Summary: Researchers have traced a precise brain pathway that drives the nocebo effect—the biological process by which negative expectations actively amplify physical pain. The study shows that anticipation, fear, or observing another’s suffering triggers release of the neurochemical cholecystokinin (CCK), which then travels along a distinct neural route to increase pain sensitivity. This work provides … Read more

Summary: A four-week randomized controlled trial found that adding a single small glass of 100% fruit juice or a smoothie to the daily diet of adults with low fruit and vegetable intake can improve mental wellbeing and reduce depression scores, without detectable adverse effects on metabolic health. Researchers tested adults who typically consumed two or … Read more

Summary: A comparative neurodevelopmental study has identified a cellular timing mechanism that determines species-specific proportions of the mammalian cerebral cortex. The research shows that differences in cortical layer thickness between species are driven by distinct “aging rates” of neural progenitor cells during early embryonic neurogenesis. By directly comparing closely related species—rats and mice—researchers found that … Read more

Summary: A precision pediatric oncology study from the Medical University of South Carolina identifies a dual-targeting strategy to prevent relapse of medulloblastoma, the most common malignant childhood brain tumor. Although many children respond to front-line therapy, about 30% experience recurrence driven by a small, therapy-resistant population of slow-dividing, self-renewing tumor cells. The investigators show that … Read more

Summary: New research shows that learning and retaining the facial and vocal movements required for speech depends primarily on the brain’s sensory systems—auditory and somatosensory cortices—rather than on the primary motor cortex. This finding reshapes theories of speech motor learning and suggests new directions for speech-restoration technologies and stroke rehabilitation. Researchers found that temporarily disrupting … Read more

Summary: An international behavioral science study uncovers a counterintuitive “proximity paradox” appearing in isolated crews. Tracking a 10-month overwinter mission at Concordia Station in Antarctica — one of the best Earth analogs for long-duration Mars exploration — researchers used wearable sensors to record daily interpersonal proximity and combined these data with regular psychological assessments. Rather … Read more

Summary: A precision neuroengineering study offers the first localized evidence that noninvasive ear-based vagus nerve stimulation interacts with human motor pathways specifically during active movement. The clinical trial evaluated transcutaneous auricular vagus nerve stimulation (taVNS) as an adjunct to physical therapy and demonstrates a focused effect on motor circuitry and arousal, rather than broad systemic … Read more

Summary: Researchers have identified a distinct cluster of blood proteins that change in people who later develop multiple sclerosis (MS). Using genetic-proteomic integration and longitudinal biobank data, the team isolated markers that appear in the bloodstream up to a decade before clinical diagnosis. These findings point toward a potential non-invasive screening approach that could identify … Read more