Dopamine signals when a fear can be forgotten, study shows
Dangers come but dangers also go and when they do, the brain has an "all-clear" signal that teaches it to extinguish its fear.
Apr 28, 2025
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Nervous System: News and Research on Amygdala
MeSH tree: A08.186.211.200.885.287.249.152
Mice exhibit altruistic rescue behavior linked to oxytocin-driven brain pathways
In a new study, researchers have found that mice can instinctively exhibit rescue-like behavior toward anesthetized conspecifics—without any prior training or external rewards. The study, published in PNAS, offers compelling ...
Apr 24, 2025
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Study finds psychedelics can reverse neuroimmune interactions that boost fear
Mass General Brigham researchers found that interactions between immune and brain cells drive fear responses, but treatment with psychedelics like MDMA and psilocybin may reverse these effects.
Apr 23, 2025
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Listening to an avatar can make you more likely to gamble, with the amygdala playing a key role
Expecting feedback from an avatar compared to a real human facilitates risk-taking behavior in a gambling task, and a brain region called the amygdala is central to this facilitation, according to a study published in PLOS ...
Apr 22, 2025
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Scientists discover the protein IL-17 that fights infection also acts on the brain, inducing anxiety or sociability
Immune molecules called cytokines play important roles in the body's defense against infection, helping to control inflammation and coordinating the responses of other immune cells. A growing body of evidence suggests that ...
Apr 7, 2025
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Study identifies brain areas that influence political intensity
A person's level of political engagement can be informed by myriad factors, from education to environment. Now, a new study—published in the journal Brain and led by Northwestern University and Shirley Ryan AbilityLab—has ...
Apr 2, 2025
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Study shows how individual neurons process probability, magnitude and risk of rewards
Researchers have gained a new understanding of how the brain processes reward and risk information. A study by neuroscientists Raymundo Báez-Mendoza from the German Primate Center (DPZ)—Leibniz Institute for Primate Research ...
Apr 2, 2025
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Exposure to air pollution in childhood associated with reduced brain connectivity
A new study led by the Barcelona Institute for Global Health (ISGlobal) has found that children exposed to higher levels of air pollution in early and mid childhood have weaker connections between key brain regions. The findings, ...
Apr 1, 2025
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Study finds unique brain changes linked to witnessing trauma
For years, post-traumatic stress disorder (PTSD) has been studied primarily in people who experience trauma firsthand. But what about those who witness it—military veterans, first responders, health care workers, or bystanders ...
Mar 18, 2025
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Brain changes may help explain postpartum depression
Subtle changes in the brain during pregnancy may help explain why some women develop postpartum depression.
Mar 6, 2025
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