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Neuroscience

All articles tagged with #neuroscience

Japanese Study Links Brain Waste Clearance to 40% Drop in Tau Protein

A Japanese research team reports that activating the brain's glymphatic waste-clearance system in mice reduced tau protein accumulation by 40%. While this suggests a potential path to slowing Alzheimer's progression, experts caution that human safety and efficacy remain unverified. Concurrent research highlights the complexity of brain waste removal, with new studies identifying additional lymphatic-like channels and emphasizing the critical role of sleep and cardiovascular health in maintaining this system.

via NHKニュース|

#alzheimers-disease #brain-waste-clearance #glymphatic-system

science10 hours ago•3 min saved

Study Links Cannabis-Induced Anxiety to Activation of Central Amygdala Neurons

A new study published in Nature Communications identifies a specific brain mechanism that may explain why cannabis use sometimes triggers anxiety and panic. Researchers at Northwestern University found that cannabinoids activate somatostatin-producing neurons in the central amygdala, a region responsible for regulating stress responses. In mouse experiments, higher doses of synthetic cannabinoids led to increased freezing behavior and avoidance of threats, effects that were reduced when these neurons were inhibited. This suggests that cannabis can loosen the brain's natural 'brake' on anxiety, particularly when combined with environmental stress.

via ScienceAlert|

#amygdala #anxiety #cannabis

science1 day ago•7 min saved

Psilocybin Study Finds Hidden Order in Brain Activity, Challenging 'Chaos' Theory

A new study challenges the idea that psychedelics cause random brain chaos. By using AI to analyze brain scans of 62 participants taking psilocybin, researchers found that brain activity actually becomes more organized and context-dependent. This hidden order may explain the profound psychological shifts and sense of 'embeddedness' reported by users, suggesting that environmental factors like music and setting could be tuned to improve therapeutic outcomes.

via Ars Technica|

#ai-analysis #brain-imaging #neuroscience

science1 day ago•68 min saved

LSD reshapes brain rhythms and complexity, sparing motor cortex

A new study using magnetoencephalography reveals that LSD alters brain activity by shifting oscillation frequencies and increasing signal complexity, primarily in sensory and language areas, while leaving motor functions largely unaffected.

via Nature|

#brain-dynamics #lsd #meg

health2 days ago•8 min saved

Experts urge proactive brain health strategies as dementia cases surge

With global dementia cases projected to triple by 2050, experts emphasize that lifestyle choices significantly impact cognitive health. Key strategies include maintaining social connections, prioritizing sleep, exercising, and managing cardiovascular health. Recent studies suggest that proactive brain training and environmental adjustments can mitigate risk, even in the absence of a cure.

via BBC Science Focus Magazine|

#brain-health #dementia #health

health3 days ago•40 min saved

US Surgeons Begin First Robotic Trials for Controversial Alzheimer's Lymphatic Procedure

Scientists in the US and Europe are launching rigorous trials to test if a controversial neck surgery can treat Alzheimer's disease. The procedure, which connects lymph nodes to veins to drain brain waste, has faced scrutiny in China due to unverified claims and regulatory crackdowns. US researchers aim to determine if the method is a genuine breakthrough or a false hope through controlled studies.

via Vox|

#alzheimers-disease #clinical-trials #health

health-and-wellness3 days ago•2 min saved

Neuroscientist Shawn Watson’s Daily Diet Strategy to Combat Decision Fatigue

Neuroscientist Shawn Watson links diet directly to brain performance, arguing that nutrition is the second most critical factor after sleep for cognitive function. He avoids artificially sweetened drinks due to observational links with cognitive decline and structures his meals to prevent afternoon decision fatigue. His routine includes multigrain cereal with flax and yogurt for breakfast, light vegetable-based lunches, and a stimulant-free brain drink. Watson emphasizes planning meals early in the day to avoid choosing easy, unhealthy options when cognitive effort drops in the evening.

via USA Today|

#cognitive-health #decision-fatigue #diet

technology3 days ago•2 min saved

Brain-IT AI Reconstructs Visual Thoughts from Brain Scans in One Hour

Researchers at the Weizmann Institute of Science have developed Brain-IT, an AI system that reconstructs images people are viewing from fMRI brain scans with high accuracy. The tool uses a dual-branch model to decode visual structure and content, requiring only one hour of calibration per user. While promising for helping paralyzed individuals communicate and accelerating brain research, experts warn of significant privacy risks if the technology is adapted for non-invasive EEG devices.

via Futurism|

#artificial-intelligence #brain-it #neuroscience

science3 days ago•83 min saved

Fly brain circuit uses inhibition to switch between tracking and memory

Researchers have identified a specific mechanism in the fruit fly brain that allows it to rapidly switch between tracking real-time sensory input and storing that information as a stable memory. By analyzing the central complex, scientists found that inhibitory signals act as a gate, decoupling two interconnected neuron populations to either follow a heading compass or lock in a navigational goal. This 'split attractor' design solves the trade-off between stability and flexibility in working memory, allowing the brain to update its internal map quickly without losing the current objective. While this study focuses on invertebrate navigation, it provides a biological blueprint for how recurrent networks manage dynamic information, offering insights applicable to broader cognitive functions and artificial intelligence models.

via Nature|

#attractor-networks #drosophila #neural-circuits

technology4 days ago•2 min saved

Brain-IT AI Reconstructs Visual Thoughts in One Hour

Researchers at the Weizmann Institute of Science have developed Brain-IT, an AI model that reconstructs images people are viewing from brain scans with high accuracy. The system requires only one hour of calibration per user, significantly faster than previous models, and identifies 128 shared functional brain regions. While promising for aiding paralyzed communication, experts warn of potential privacy risks if adapted for wearable devices.

via PetaPixel|

#ai #brain-it #fmri

health4 days ago•2 min saved

Experts Link Brain Health to Physical Activity, Diet, and Social Connection

Recent reports emphasize that maintaining cognitive health in older age depends less on mental puzzles and more on physical habits. Experts highlight the importance of specific exercise zones, a Mediterranean-style diet, and social engagement to combat brain shrinkage and reduce dementia risk.

via YourTango|

#aging #dementia-prevention #diet

science4 days ago•11 min saved

Decades-long debate over adult human neurogenesis nears resolution with new genetic evidence

The long-standing scientific debate over whether the human brain generates new neurons after childhood is approaching a consensus. While earlier studies using chemical markers yielded conflicting results, recent research using single-nucleus RNA sequencing and machine learning has identified dividing neural progenitors in adult human brains. This suggests the brain retains a capacity for regeneration, potentially opening new avenues for treating neurodegenerative diseases, though questions remain about the maturity and function of these cells.

via Nature|

#brain-regeneration #human-brain #medical-research

science-and-medicine4 days ago•7 min saved

Stanford’s Karl Deisseroth Wins 2026 Nobel for Optogenetics, Sparking Global Praise

Karl Deisseroth, a Stanford professor of bioengineering and psychiatry, has won the 2026 Nobel Prize in Physiology or Medicine for his pioneering work in optogenetics. The award, announced on October 5, 2026, recognizes his development of a technique that uses light to control specific nerve cells in living brains. Deisseroth shares the prize with Peter Hegemann and Georg Nagel, with the three laureates splitting a total of 12 million Swedish crowns. The announcement triggered widespread celebration among his family, former students, and colleagues, who highlighted his relentless work ethic and generosity in sharing scientific tools. Deisseroth stated he plans to return immediately to research, emphasizing the need to continue discovering new treatments for neuropsychiatric disorders.

via Stanford Medicine|

#karl-deisseroth #neuroscience #nobel-prize

health-and-science4 days ago•2 min saved

New Book Argues Pregnancy Triggers a 'Second Puberty' in the Brain, Not 'Mommy Brain'

Neuroscientist Susana Carmona’s new book, 'A Mother’s Brain,' argues that pregnancy causes profound, lasting changes to the maternal brain, a process she terms 'matrescence.' This phenomenon involves significant neuroplasticity and hormonal shifts that reshape the brain similarly to puberty, rather than causing the cognitive decline often labeled 'mommy brain.'

via USA Today|

#brain-plasticity #health-and-science #matrescence

science5 days ago•392 min saved

2026 Nobel Prize in Medicine Honors Optogenetics Pioneers for Brain Control Breakthrough

Karl Deisseroth, Peter Hegemann, and Georg Nagel have been awarded the 2026 Nobel Prize in Physiology or Medicine for developing optogenetics, a technique that allows scientists to activate or inhibit specific nerve cells in living brains using light. The prize, announced on October 5, 2026, recognizes their work in mapping neural circuits and understanding the biological basis of behaviors and disorders. The three laureates share a prize sum of 12 million Swedish crowns (approximately $1.2 million).

via NBC News|

#2026-nobel-laureates #karl-deisseroth #neuroscience