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neuroscience

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Green cross section of a brain with a large bright area in its left hemisphere.
neuroscience

Lab-Grown Human Cells Form Working Circuits in Rat Brains

By Allison Whitten
October 12, 2022
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Letting human brain organoids grow in animal brains could be an ethical new option for experimental studies of neurological disorders.

Artwork of human figure smelling a flower and the smell being categorized as a type of flower.
smell

Machine Learning Highlights a Hidden Order in Scents

By Allison Parshall
October 10, 2022
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Efforts to build a better digital “nose” suggest that our perception of scents reflects both the structure of aromatic molecules and the metabolic processes that make them.

A human figure in a brain landscape stands at a fork in a road. One way goes to pleasant surroundings, the other to an unpleasant place.
memory

A Good Memory or a Bad One? One Brain Molecule Decides.

By Yasemin Saplakoglu
September 7, 2022
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When the brain encodes memories as positive or negative, one molecule determines which way they will go.

The face of a sleeping person surrounded by images of the person running and flying in dreams, with other images of scientists monitoring the process.
The Joy of Why

Why and How Do We Dream?

By Steven Strogatz
August 24, 2022
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Dreams are subjective, but there are ways to peer into the minds of people while they are dreaming. Steven Strogatz speaks with sleep researcher Antonio Zadra about how new experimental methods have changed our understanding of dreams.

a metallic face processes a butterfly on a robotic hand
artificial intelligence

Self-Taught AI Shows Similarities to How the Brain Works

By Anil Ananthaswamy
August 11, 2022
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Self-supervised learning allows a neural network to figure out for itself what matters. The process might be what makes our own brains so successful.

Orange netlike structures surround the neurons in our brains.
Quantized Columns

Neuronal Scaffolding Plays Unexpected Role in Pain

By R. Douglas Fields
July 28, 2022
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Perineuronal nets, rigid structures that hold certain neurons in place, affect a surprising amount of brain activity, including some associated with chronic pain.

A human figure’s brain with a “low battery” icon on it.
neuroscience

The Brain Has a ‘Low-Power Mode’ That Blunts Our Senses

By Allison Whitten
June 14, 2022
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Neuroscientists uncovered an energy-saving mode in vision-system neurons that works at the cost of being able to see fine-grained details.

evolution

Brain-Signal Proteins Evolved Before Animals Did

By Viviane Callier
June 3, 2022
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Some animal neuropeptides have been around longer than nervous systems.

A man sits at a table in the middle of a wood-paneled library, perusing a large book.
Q&A

Pondering the Bits That Build Space-Time and Brains

By Charlie Wood
April 20, 2022
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Vijay Balasubramanian investigates whether the fabric of the universe might be built from information, and what it means that physicists can even ask such a question.


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