Summary: Researchers at Princeton University have developed a three-dimensional, programmable bio-hybrid device that integrates living brain cells with microfabricated electronics. Unlike earlier “brain-on-a-chip” efforts that cultured neurons on flat surfaces, this approach uses a flexible, microscopic metal mesh as a scaffold so tens of thousands of neurons can grow around and through the sensors. The … Read more

Summary: A large, national cohort study has identified a clear dose-response relationship between stroke severity and long-term cognitive decline. Tracking more than 42,000 adults across up to 30 years, researchers found that people who survive severe ischemic strokes face roughly five times the odds of developing dementia compared with those who never had a stroke. … Read more

Summary: Researchers have produced the first cellular-resolution molecular map of human prenatal brain development in Down syndrome, analyzing more than 100,000 nuclei across a critical mid-gestation window. This single-cell multi-omic study clarifies prior inconsistencies from animal and in vitro models and reveals how developmental timing is altered in the Down syndrome neocortex. The results indicate … Read more

Summary: A large-scale study of nearly 1,000 patients in Japan found a clear connection between ADHD-related traits and persistent chronic pain. Adults referred to specialized pain centers were significantly more likely to display ADHD traits than the general population, and those traits were linked to greater pain severity largely through psychological pathways. The research indicates … Read more

Summary: A large national study finds a clear dose-response relationship between stroke severity and long-term cognitive decline. Analyzing health data from more than 42,000 adults over up to 30 years, researchers report that survivors of severe ischemic stroke face roughly five times the odds of developing dementia compared with people who never had a stroke. … Read more

Summary: Researchers have discovered that Smoothened, a signaling receptor best known for guiding brain development before birth, also plays a crucial role in adult learning and behavioral flexibility. In the adult striatum, Smoothened acts like a tuning knob that adjusts the timing between dopamine and acetylcholine signals, shaping how strongly behaviors are reinforced and how … Read more

Summary: A large-scale study of nearly 1,000 patients in Japan has uncovered a substantial overlap between attention-deficit/hyperactivity disorder (ADHD) traits and chronic pain. Adults referred to specialized pain centers were about 2.4 times more likely to show ADHD-related traits than expected in the general population. The research indicates that ADHD does not appear to cause … Read more

Summary: Do AI chatbots genuinely understand the world, or are they simply echoing text they were trained on? A new Brown University study finds that language models form internal mathematical representations that capture real-world constraints and reflect human judgments. Using mechanistic interpretability—an approach akin to neuroscience for artificial networks—researchers discovered that models create distinct internal … Read more

Summary: A signaling receptor once thought to be active mainly during brain development is now shown to play a crucial role in adult learning and behavioral flexibility. New research demonstrates that the receptor Smoothened acts like a “tuning knob” in the adult striatum, coordinating the timing between dopamine and acetylcholine to shape how behaviors are … Read more

Summary: Do AI chatbots truly understand the world, or are they only echoing patterns from text? A new study from Brown University shows that language models form internal, mathematical representations of real-world constraints—an emergent “world model” that categorizes events as commonplace, unlikely, impossible, or nonsensical. Using mechanistic interpretability—an approach analogous to neuroscience for artificial systems—researchers … Read more