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stress

·March 10, 2025·4 min read

Prenatal Stress Timing Shapes Infant Stress Response

New research reveals that the timing of stress during pregnancy has gender-specific effects on infants, altering how boys and girls respond to stress differently. Scientists found mid-pregnancy stress has a stronger impact on girls' stress reactivity, while boys are more sensitive to stress experienced in late gestation.

Featured Neuroscience Psychology

·March 3, 2025·4 min read

Brain Changes From Early-Life Stress May Be Reversible

A new study reveals how prenatal infections followed by early-life stress—known as "two-hit stress"—can lead to brain dysfunction and psychiatric-like behaviors. Researchers found that affected mice showed abnormal cerebellar activity, increased microglial turnover, and impaired brain-wide connectivity.

Featured Neuroscience Psychology

·February 18, 2025·4 min read

Early Life Stress Rewires Brain Circuits Linked to Social Motivation

New research shows that early life stress disrupts dopamine signaling, altering social motivation and behavior. Scientists found that mice raised in stressful conditions were less likely to engage in social interactions compared to those with enriched experiences.

Featured Genetics Neuroscience Psychology

·February 18, 2025·4 min read

Prenatal Stress Hormones Alter Brain Development

Environmental factors like stress and medication exposure during pregnancy can shape brain development, but the mechanisms remain unclear. Researchers used brain organoids to study the effects of synthetic glucocorticoids, commonly given to prevent complications in premature births.

Auditory Neuroscience Featured Neuroscience Psychology

·February 11, 2025·4 min read

Stress Alters How the Brain Processes Sound

Chronic stress weakens the brain’s ability to process sounds, requiring louder stimuli to trigger normal responses, according to new research in mice. Scientists found that stress affects inhibitory brain cells, which suppress responses to lower-decibel sounds while maintaining sensitivity to louder noises.

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

·December 16, 2024·3 min read

Dopamine Plays Key Role in the Heart’s Stress Response

Researchers have discovered how stress-induced cardiovascular changes are controlled by the brain. Experiments in rats show that activating the lateral habenula, a stress-sensitive brain region, triggers changes in heart rate and blood pressure.

Featured Neuroscience Psychology

·December 6, 2024·4 min read

Astrocytes Hold the Key to Stress Response Regulation

Astrocytes, previously known for supporting nerve cells, have been identified as key regulators of stress responses in the lateral septum of the brain. Researchers demonstrated that astrocytes release adenosine to suppress nearby nerve activity when exposed to stress-inducing stimuli. This groundbreaking finding reveals that astrocytes interact dynamically with neurons to influence fear, anxiety, and social behaviors, varying based on the stress type and brain region.

Featured Neuroscience Psychology

·December 4, 2024·6 min read

Newly Discovered Brain Circuit Predicts Response to Stress

Researchers identified a brain circuit involving the amygdala and hippocampus that predicts resilience to stress in mice. Mice with disrupted neural communication in this circuit struggled to seek rewards, but activating the neurons restored resilience and improved decision-making.

This shows a woman sitting alone with a mug of tea.

Featured Neuroscience Psychology

·December 3, 2024·3 min read

Alone Time Helps Reduce Holiday Stress

46% of Americans don’t get enough alone time during the holiday season, even though 56% say it’s crucial for their mental health. Taking brief moments alone can help the nervous system settle, reducing stress and improving well-being during this busy time.

Featured Neuroscience

·November 19, 2024·6 min read

Breath and Emotion Connected by Newly Identified Brain Circuit

Researchers have identified a specific brain circuit that allows voluntary control of breathing, linking it to emotional and behavioral states. This circuit, spanning the anterior cingulate cortex, pons, and medulla, slows breathing during calm states and accelerates it under anxiety. Experiments in mice showed activating this circuit reduced anxiety, while shutting it off increased stress.

Featured Neuroscience Psychology

·November 16, 2024·3 min read

How Depression Alters Stress, Health, and Lifespan

Depression disrupts the body's stress systems, causing physical health risks like heart disease, diabetes, and stroke, and reducing life expectancy by 7-10 years. The condition triggers brain structure changes, such as a 40% reduction in subgenual prefrontal cortex volume, and disrupts hormone systems involving CRH, norepinephrine, and cortisol.