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Featured Genetics Neurology Neuroscience

·January 9, 2025·6 min read

Brain Cell Genetics Shape Aging and Alzheimer’s Risk

Researchers have identified genetic variations in brain cells, particularly microglia and oligodendrocytes, that influence both aging and Alzheimer’s risk. These variations impact how cells function as they age, potentially priming some individuals for dementia.

Featured Neuroscience Psychology

·January 9, 2025·5 min read

Neural Mechanisms Behind Stress-Driven Social Changes Found

Male and female mice usually prefer female companions but switch to preferring males under survival stress, a new study reveals. This behavioral shift is driven by distinct brain circuits involving dopaminergic neurons in the ventral tegmental area.

Featured Neuroscience Psychology

·January 9, 2025·4 min read

High-Fat Diets in Adolescence Linked to Adult Impulsivity

Adolescent rats fed a high-fat diet displayed increased impulsivity and altered decision-making as adults. These "cheesecake rats" were quicker to act on visual cues (indicative of impulsivity) but showed more conservative choices in gambling tasks, opting for smaller, safer rewards.

Featured Genetics Neuroscience

·January 9, 2025·4 min read

Early Stress Alters Sperm DNA, Impacting Offspring’s Brain Development

Childhood stress may leave lasting marks on sperm, altering epigenetic profiles and potentially influencing brain development in offspring. Researchers found that men with high levels of childhood maltreatment had changes in DNA methylation and non-coding RNA levels in their sperm.

Autism Brain Cancer Featured Genetics Neuroscience

·January 9, 2025·8 min read

Youthful Brain Stem Cells Linked to Autism and Brain Cancer

Researchers have identified a unique stem cell in the young brain capable of maturing into multiple cell types, potentially explaining the origins of autism and glioblastoma. These stem cells show gene expression patterns that regulate early brain development and, when disrupted, could lead to neurological conditions.

Featured Neuroscience Psychology

·January 9, 2025·6 min read

How We Make Life’s Toughest Choices

A new study presents a novel framework for understanding transformative life decisions, focusing on their complexity and emotional impact. Researchers identified five key dimensions—conflicting cues, change of self, uncertain experiential value, irreversibility, and risk—that shape these decisions.

Featured Neuroscience

·January 8, 2025·6 min read

How Brains Filter Sensory Noise to Make Better Decisions

A new study reveals how electrical synapses help animals, including worms, filter sensory inputs and make context-appropriate decisions. Researchers found that these synapses, mediated by the protein INX-1, connect specific neurons in worms, dampening irrelevant signals and prioritizing essential ones.

Autism Featured Genetics Neuroscience

·January 8, 2025·5 min read

Single Gene Links Autism, Epilepsy via Brain Circuit Development

The gene neuropilin2 regulates inhibitory neuron migration and excitatory neuron connections, essential for balanced brain activity. A study revealed that deleting neuropilin2 disrupts inhibitory circuits, leading to autism-like behaviors and a higher seizure risk.

Featured Neuroscience

·January 8, 2025·4 min read

Sleep Loss Weakens Brain’s Ability to Block Unwanted Memories

New research reveals that sleep deprivation hampers the brain’s ability to suppress intrusive memories, a process critical for mental health. The study found that well-rested individuals could engage the right dorsolateral prefrontal cortex to inhibit unwanted memories, while sleep-deprived participants struggled.

Featured Neuroscience

·January 8, 2025·6 min read

Dopamine and Serotonin Drive Emotional Word Processing

Researchers have uncovered how neurotransmitters in the brain respond to the emotional content of language, shedding light on the intersection of emotion, cognition, and communication. Using advanced techniques, the team simultaneously measured dopamine, serotonin, and norepinephrine release in patients during exposure to emotionally charged words.

This shows computer generated versions of human cells.

Brain Cancer Featured Genetics Neuroscience

·January 8, 2025·7 min read

AI Reveals Gene Activity in Human Cells

Researchers have developed an AI model that accurately predicts gene activity in any human cell, providing insights into cellular functions and disease mechanisms. Trained on data from over 1.3 million cells, the model can predict gene expression in unseen cell types with high accuracy. It has already uncovered mechanisms driving a pediatric leukemia and may help explore the genome's "dark matter," where most cancer mutations occur.

Featured Neuroscience

·January 8, 2025·5 min read

Deep Sleep Drives Brain’s Waste Clearance, Aiding Cognitive Health

Deep sleep may clear the brain of toxic waste via a process driven by norepinephrine, a molecule that creates rhythmic blood vessel contractions. This "brainwashing" system, part of the glymphatic system, helps remove harmful proteins linked to neurological disorders.