Summary: A new study finds that a small group of cells adjacent to the brain’s locus coeruleus—often called the “blue spot”—helps control arousal, attention and stress responses. These peri-LC neurons release the inhibitory neurotransmitter GABA to temper locus coeruleus activity, reducing norepinephrine release and shaping how the brain reacts to different stimuli. By selectively modulating … Read more

Summary: New research indicates that sleeping nine hours or more per night may be linked to poorer cognitive performance, particularly among people experiencing depressive symptoms. An analysis of nearly 1,900 dementia- and stroke-free adults in the Framingham Heart Study found that long sleep duration correlated with lower scores in overall cognition and in specific domains … Read more

Summary: Researchers show that large language model (LLM) AI agents can form shared social conventions and collective biases purely through repeated, local interactions. Using an adapted “naming game” experiment, decentralized populations of LLM agents reached consensus and, in some cases, flipped their community conventions when small committed subgroups introduced alternative choices. A new study from … Read more

Summary: A large cohort study that followed nearly 491,000 people for about 12 years found a clear, independent association between loneliness and a higher risk of developing hearing loss. After adjusting for genetic risk, existing health conditions, medications, and lifestyle factors, people who reported feeling lonely had about a 24% greater chance of being diagnosed … Read more

Summary: Researchers have developed an AI-powered handwriting analysis tool that could transform how educators and clinicians screen K–5 children for dyslexia and dysgraphia. By evaluating handwriting samples, the system detects behavioral indicators, spelling errors, motor patterns, and cognitive markers with strong accuracy, offering a faster, more scalable alternative to traditional screening methods. Traditional screening methods … Read more

Summary: New research explains how increased intraocular pressure can deform tiny blood vessels in the optic nerve region and impair oxygen delivery, potentially accelerating glaucoma — a major cause of irreversible vision loss. Using advanced three-dimensional modeling and fluorescent tracers, researchers observed that even modest pressure elevations can reduce blood flow to critical tissues at … Read more

Summary: A new RIKEN study reveals how rats can acquire fear through inference rather than only through direct experience. By first pairing a neutral sound with an image and then pairing that image with an aversive event, researchers showed that rats later exhibited fear to the sound alone. The work pinpoints the medial prefrontal cortex … Read more

Summary: New brain-imaging research shows that sudden “aha!” moments not only feel rewarding but also change how the brain represents information, making those insights more likely to be stored in long-term memory. In tests with visual puzzles, participants remembered solutions that arrived as sudden insights far more reliably than solutions found through step-by-step reasoning. These … Read more

Summary: Researchers have identified a tiny, nine–amino-acid microexon spliced into the DAAM1 gene that is essential for memory formation and functions only in neurons. Removing this microexon in mice reduced the number of dendritic spines—key structures for learning and memory—and produced about a 40% drop in performance on memory tasks. When the research team corrected … Read more

Summary: A new study argues that some generative AI agents satisfy the three main philosophical conditions commonly associated with free will: goal-directed agency, the capacity to choose among genuine alternatives, and meaningful control over their actions. Drawing on the work of philosophers Daniel Dennett and Christian List, researcher Frank Martela evaluates current generative agents such … Read more