Neuroscience News - AI, Neuroscience, Psychology Research

·January 27, 2025·3 min read

Dopamine Clock May Drive Bipolar Mood Swings

New research suggests that mood swings in bipolar disorder are regulated by two clocks: the body’s 24-hour circadian rhythm and a dopamine-based clock that influences alertness. When these clocks align at specific intervals, they may trigger shifts between mania and depression.

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·January 23, 2025·7 min read

AI Mimics Toddler-Like Learning to Unlock Human Cognition

A new AI model, based on the PV-RNN framework, learns to generalize language and actions in a manner similar to toddlers by integrating vision, proprioception, and language instructions. Unlike large language models (LLMs) that rely on vast datasets, this system uses embodied interactions to achieve compositionality while requiring less data and computational power.

This shows the outline of a person and a brain.

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·January 23, 2025·7 min read

Long COVID Impairs Exercise Capacity and Cognition for Years

A study of nearly 1,000 people with post-COVID-19 syndrome (PCS) revealed that two-thirds still experienced significant symptoms, including reduced exercise capacity and cognitive performance, two years after infection. Persistent symptom clusters included fatigue, neurocognitive disturbances, and post-exertional malaise, with worse outcomes in individuals with obesity, lower education, or severe initial infections.

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·January 23, 2025·9 min read

Decoding the Knowledge: How Taxi Drivers Think Differently From AI

A study reveals that London taxi drivers prioritize complex and distant junctions during their initial "offline thinking" phase when planning routes, rather than sequentially considering streets. This efficient, intuitive strategy leverages spatial awareness and contrasts with AI algorithms, which typically follow step-by-step approaches.

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·January 23, 2025·6 min read

Adults With ADHD May Have Shorter Lives

A study analyzing data from over 30,000 adults with diagnosed ADHD found a reduction in life expectancy of 4.5–9 years for men and 6.5–11 years for women compared to those without ADHD. Researchers caution that the findings may overestimate the reduction due to underdiagnosis and additional health problems among diagnosed individuals.

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·January 22, 2025·7 min read

Targeting Reward Pathways to Treat Depression

New research highlights how the brain's reward-learning system can guide personalized treatments for depression. By studying two brain signals, expected value and prediction error, researchers identified markers that predict recovery potential and tailored responses to rewards and setbacks.

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·January 22, 2025·7 min read

Maternal X Chromosome Accelerates Brain Aging

New research shows that female mice expressing only a maternal X chromosome experience faster brain aging and cognitive decline compared to those expressing both maternal and paternal X chromosomes. The maternal X accelerates aging in the hippocampus, a key region for memory and learning, and silences certain genes essential for brain health.

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·January 22, 2025·6 min read

Dopamine Drives Aggression Learning in Males

New research reveals that dopamine plays a crucial role in teaching young male mice to fight, with the chemical’s influence diminishing as they gain experience. In novice fighters, boosting dopamine increased aggression, while blocking it stopped them from fighting.

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·January 21, 2025·5 min read

Microglia Act Differently in Male and Female Brains

Microglia, the brain’s immune cells, play vital roles in clearing toxins and maintaining neuronal health but can also contribute to neurodegenerative diseases if overactive. New research reveals sex-based differences in how adult male and female microglia respond to the enzyme inhibitor PLX3397, a common tool in microglial research. While male microglia showed the expected depletion, female microglia employed alternative signaling pathways, leading to increased survival.

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·January 21, 2025·5 min read

Mutations Drive Aging and Shape Epigenetic Clock

A new study has uncovered a direct link between somatic mutations and epigenetic modifications, challenging established views on aging. Researchers found that random genetic mutations drive predictable changes in DNA methylation, offering new insights into the relationship between mutation accumulation and epigenetic clocks.

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·January 21, 2025·6 min read

Antibiotics and Other Drugs May Reduce Dementia Risk

A study analyzing data from over 130 million individuals found that antibiotics, antivirals, vaccines, and anti-inflammatory medications are associated with a reduced risk of dementia. This supports the idea that infections and inflammation contribute to dementia and highlights the potential of repurposing existing drugs for prevention or treatment.

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·January 20, 2025·6 min read

GLP-1 Drugs Offer Brain Benefits but May Pose Other Health Risks

A study analyzing data from over 2 million veterans found that GLP-1 receptor agonists, popular weight-loss drugs like Ozempic and Wegovy, provide significant neurological and behavioral health benefits, including reduced risks of addiction, Alzheimer’s, and dementia. However, they also pose risks for pancreatitis and kidney conditions, emphasizing the need for careful monitoring.