Summary: A massive observational study of more than 277,000 adults reveals that loneliness and social isolation significantly shorten disease-free life expectancy, stripping men of nearly six years and women of…
Tag: neurobiology
Disruption of Striatal D2 Receptor Neurons Drives ADHD and Impulsivity
Summary: Researchers have demonstrated that deleting the membrane-fusion protein NSF specifically from dopamine D2 receptor (D2R)-expressing neurons leads to striatal shrinkage, severe dopamine depletion, and classic ADHD-like hyperactivity and impulsivity…
Aging Brains Maintain Robust Language Networks Despite Cognitive Decline
Summary: While executive functions like memory and problem-solving naturally decline as we age, new brain imaging research reveals that the neural network responsible for language remains preserved and fully functional.…
Regenerative Astrocytes Repair Brain Damage
Summary: Researchers discovered a previously unknown mechanism through which the adult mammalian brain repairs itself following focal injuries or autoimmune damage. Using two-photon microscopy and longitudinal gene mapping in living…
Eye Tracking Reveals Where Human Reading and AI Processing Diverge
Summary: A new study evaluated whether large language models (LLMs) can accurately account for human reading dynamics. The team compared eye-tracking data from 368 adult readers against predictions generated by…
Dog Brains Differentiate Human Anger, Fear, and Sadness
Summary: A new study demonstrated that dogs possess specialized neural networks for processing human facial expressions. The team used functional magnetic resonance imaging (fMRI) and machine learning to analyze canine…
Prefrontal Cortex Can Block Creative Problem-Solving
Summary: Researchers discovered an unexpected role for the medial prefrontal cortex (mPFC), a region traditionally viewed as the executive driver of behavioral flexibility. The team demonstrated that the mPFC can…
Exercise Shields Dopamine Neurons in Parkinson’s
Summary: Researchers synthesized evidence from 129 studies detailing how exercise-induced muscle signaling protects against Parkinson’s disease (PD) pathology. The authors examine the biological impact of sarcopenia, the progressive loss of…
Why Psychedelics Make Everything Feel Deeply Connected
Summary: Researchers introduce “apical hypercontextualisation”—a bottom-up neurobiological mechanism explaining how psychedelics (psilocybin, LSD, DMT, mescaline) transform perception and cognition. Moving beyond macro-scale whole-brain neuroimaging, the framework focuses on the cellular…
Receptor Density Shapes Whole-Brain Network Dynamics
Summary: Researchers developed a biologically grounded whole-brain computer model that bridges microscopic molecular chemistry with macroscopic neural activity. The team integrated detailed empirical maps of muscarinic acetylcholine receptor density across…
