Category Health/Medical

Neural Networks Made of Light

Artistic illustration of a neuromorphic system of waveguides carrying light.© Clara Wanjura

Scientists propose a new way of implementing a neural network with an optical system which could make machine learning more sustainable in the future. The researchers at the Max Planck Institute for the Science of Light have published their new method in Nature Physics, demonstrating a method much simpler than previous approaches.

Machine learning and artificial intelligence are becoming increasingly widespread with applications ranging from computer vision to text generation, as demonstrated by ChatGPT. However, these complex tasks require increasingly complex neural networks; some with many billion parameters...

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Researchers Pinpoint Brain Cells that Delay First Bite of Food

A set of neurons identified by Scripps Research scientists influence the start of eating and drinking. Do you grab a fork and take a first bite of cake, or say no and walk away? Our motivation to eat is driven by a complex web of cells in the brain that use signals from within the body, as well as sensory information about the food in front of us, to determine our behaviors. Now, Scripps Research scientists have identified a group of neurons in a small and understudied region of the brain — the parasubthalamic nucleus (PSTN) — that controls when an animal decides to take a first bite of food.

In the study, published in Molecular Psychiatry on July 4, 2024, the team of scientists set out to selectively manipulate a group of PSTN cells that dial up their activity during periods of bi...

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Gut Microbe could hold Key to Help People Benefit from Healthy Foods

A gut microbe could hold a key to help people benefit from healthy foods
Graphical abstract. Credit: Cell (2024). DOI: 10.1016/j.cell.2024.06.018

In an analysis of more than 50,000 individuals from around the world, carriers of gut Blastocystis, a single-celled organism that has been labeled either a parasite or harmless organism but is commonly found in the digestive system, was linked to indicators of good cardiovascular health and decreased body fat.

The research is published in Cell by an international team led by investigators at Massachusetts General Hospital (MGH).

“Blastocystis’ effects on health and disease are controversial and likely context-dependent, but our research suggests that it may play a beneficial role in how diet impacts human health and disease,” said co-lead author Long H...

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Scientists discover New T cells and Genes related to Immune Disorders

A newly developed method called ReapTEC allowed the discovery of thousands of active bidirectional enhancers. Further analysis of GWAS data revealed that various immune-mediated diseases, like multiple sclerosis and rheumatoid arthritis, are related to genetic variations within these enhancers.

Researchers led by Yasuhiro Murakawa at the RIKEN Center for Integrative Medical Sciences (IMS) and Kyoto University in Japan and IFOM ETS in Italy have discovered several rare types of helper T cells that are associated with immune disorders such as multiple sclerosis, rheumatoid arthritis, and even asthma...

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