Neuroscience

Long-term learning requires new nerve insulation

Most memories fade in a matter of days or weeks, while some persist for months, years, or even for life. What allows certain experiences to leave such a long-lasting imprint in our neural circuits? This is an age-old question ...

Neuroscience

With these neurons, extinguishing fear is its own reward

When you expect a really bad experience to happen and then it doesn't, it's a distinctly positive feeling. A new study of fear extinction training in mice may suggest why: The findings not only identify the exact population ...

Neuroscience

Why nerve cells in the brain process information differently

The dentate gyrus is the "input point" for the hippocampus part of the brain. It transmits information from the short term memory to the long term. It consists of granule cells, which are especially dense in this area of ...

Immunology

Simulating amino acid starvation may improve dengue vaccines

Eating a low-calorie diet can help you live longer and prevent age-related diseases—and even improve the immune system's function. A new study finds that, in mice, a compound used in herbal medicine can give a similar immune ...

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