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The Hidden Brain Connections Between Our Hands and Tongues

By R. Douglas Fields
August 28, 2023
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Sticking out your tongue while doing delicate work with your hands reveals a history of evolutionary relationships.

developmental biology

Why Insect Memories May Not Survive Metamorphosis

By Yasemin Saplakoglu
July 26, 2023
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The reshuffling of neurons during fruit fly metamorphosis suggests that larval memories don’t persist in adults.

Illustration of a brain surrounded by castle walls that keep out blood vessels.
explainers

How the Brain Protects Itself From Blood-Borne Threats

By Yasemin Saplakoglu
June 20, 2023
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To buffer the brain against menaces in the blood, a dynamic, multi-tiered system of protection is built into the brain’s blood vessels.

machine learning

Some Neural Networks Learn Language Like Humans

By Steve Nadis
May 22, 2023
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Researchers uncover striking parallels in the ways that humans and machine learning models acquire language skills.

smell

How a Human Smell Receptor Works Is Finally Revealed

By Wynne Parry
May 1, 2023
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After decades of frustration, researchers have determined how an airborne scent molecule links to a human smell receptor.

a worm superimposed with lines and nodes representing neural networks
neural networks

Researchers Discover a More Flexible Approach to Machine Learning

By Steve Nadis
February 7, 2023
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“Liquid” neural nets, based on a worm’s nervous system, can transform their underlying algorithms on the fly, giving them unprecedented speed and adaptability.

Quantized Columns

When Does the Brain Operate at Peak Performance?

By John M. Beggs
January 31, 2023
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The critical brain hypothesis suggests that neural networks do their best work when connections are not too weak or too strong.

A sad woman stands under an umbrella that is decorated with images of brains, molecules and DNA. Rain falls on her under the umbrella but the day is otherwise clear.
neuroscience

The Cause of Depression Is Probably Not What You Think

By Joanna Thompson
January 26, 2023
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Depression has often been blamed on low levels of serotonin in the brain. That answer is insufficient, but alternatives are coming into view and changing our understanding of the disease.

2022 in Review

The Year in Biology

By John Rennie
December 21, 2022
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Momentum for new ideas in Alzheimer’s research joined advances in neuroscience, developmental biology and origin-of-life studies to make 2022 a memorable year of biological insights.


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