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mental health

·December 17, 2024·5 min read

Teen Brain’s Blunted Reward Response Predicts Depression Onset

A new study reveals that a reduced neural response to rewards in teens predicts the first onset of depression, but not anxiety or suicidality. Researchers used EEG scans to measure "reward positivity" in at-risk adolescents and found that those with blunted responses were more likely to develop depression.

Featured Neuroscience Psychology

·December 17, 2024·6 min read

Ketamine Reduces “Giving Up” by Targeting Brain Support Cells

Researchers have found that ketamine’s antidepressant effects target astroglia, a type of brain support cell, rather than neurons, challenging conventional views. Using zebrafish, scientists observed that ketamine suppressed the “giving up” behavior caused by futility signals, an effect linked to astroglial activation.

Featured Neuroscience Psychology

·December 12, 2024·8 min read

Gut Serotonin Plays Role in Depression and Mood

Serotonin in the gut epithelium plays a critical role in modulating mood and may provide a safer target for treating depression and anxiety. In animal studies, increasing gut serotonin improved mood symptoms without causing digestive issues, unlike systemic antidepressant treatments.

Featured Neuroscience Psychology

·December 12, 2024·6 min read

Schizophrenia’s Unique Brain Network Identified

A new study has identified a distinct brain network connecting areas of atrophy associated with schizophrenia, offering a unified view of its neuroanatomy. By analyzing data from over 90 studies and more than 8,000 participants, researchers created an atrophy connectivity map that overlaps with regions linked to schizophrenia, such as the insula and hippocampus.

Featured Neuroscience Psychology

·December 12, 2024·4 min read

Emotional Memory Cells Driving Empathy Discovered

Researchers have uncovered a brain mechanism in the prefrontal cortex that determines how animals respond to others’ emotions based on their own past experiences. These neurons, producing corticotropin-releasing factor (CRF), act as emotional memories, modulating responses to socio-emotional stimuli.

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 Genetics Neuroscience Psychology

·December 6, 2024·6 min read

Psychosis Risk Tied to Heavy Cannabis Use and Genetic Factors

Heavy cannabis use and genetic risk for schizophrenia independently contribute to the likelihood of developing psychosis. Researchers used two large datasets to analyze the relationship between cannabis use, schizophrenia polygenic risk scores (PRS), and psychosis.

Featured Neuroscience Psychology

·December 6, 2024·5 min read

Antipsychotics Worsen Behavior in Dementia

A study of 500,000 Canadian nursing home residents found antipsychotic medications significantly worsened behaviors in patients, with nearly 68% experiencing increased issues. Antipsychotics are often prescribed "off-label" for dementia-related symptoms, despite serious side effects like tremors and cognitive decline. Researchers advocate for person-centered care, emphasizing non-drug therapies like music, art, and exercise to address behavioral issues.

Autism Featured Genetics Neuroscience Psychology

·December 5, 2024·6 min read

Gene Defect Linked Brain Size and Social Behavior in ASD, Schizophrenia

A new study reveals how genetic deficits, particularly in the Tbx1 gene, are linked to reduced brain volume and altered social behavior, findings relevant to autism and schizophrenia. Researchers observed smaller amygdala volumes in Tbx1-deficient mice, a brain region key to emotional regulation and social behavior. These mice displayed less interest in social interaction, relying more on non-social cues like bedding preferences.

Featured Genetics Neuroscience Psychology

·December 5, 2024·5 min read

Depression Genes in Women Linked to Higher Heart Disease Risk

A new study analyzing genetic data from over 300,000 people revealed that women with a high genetic risk for depression also face a higher likelihood of developing heart disease, even without a depression diagnosis. This link was not observed in men, highlighting significant gender differences. Researchers emphasized the importance of addressing cardiovascular health in women, particularly those with depression, regardless of menopausal status.

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 gas pumps, a person and a brain.

Featured Genetics Neuroscience Psychology

·December 4, 2024·3 min read

Leaded Gas Exposure Linked to Mental Illness

A new study estimates that childhood lead exposure, peaking between 1960 and 1990 due to leaded gasoline, caused 151 million excess cases of mental illness by 2015. Researchers linked historic lead exposure data to mental health symptoms, finding that personality changes and mental health disorders were most pronounced among Generation X.