Jon Hamilton Jon Hamilton is a correspondent for NPR's Science Desk.
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Jon Hamilton

Decoded Brain Signals Could Give Voiceless People A Way To Talk

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Ketamine appears to restore faulty connections between brain cells, according to research performed in mice. Kevin Link/Science Source hide caption

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Kevin Link/Science Source

Ketamine May Relieve Depression By Repairing Damaged Brain Circuits

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Just a 10 percent shift in the salt concentration of your blood would make you very sick. To keep that from happening, the body has developed a finely tuned physiological circuit that includes information about that and a beverage's saltiness, to know when to signal thirst. Nodar Chernishev/Getty Images hide caption

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Nodar Chernishev/Getty Images

Blech! Brain Science Explains Why You're Not Thirsty For Salt Water

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Scientists are questioning the evidence about an alleged attack on diplomats at the U.S. Embassy in Havana. Ramon Espinosa/AP hide caption

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Ramon Espinosa/AP

Doubts Rise About Evidence That U.S. Diplomats In Cuba Were Attacked

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Various forms of dementia can take very different courses, so it's important to get the right diagnosis. Mehau Kulyk/Science Source hide caption

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Mehau Kulyk/Science Source

Is It Alzheimer's Or Another Dementia? The Right Answer Matters

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Spravato, the brand name for esketamine, a newly approved option for treatment-resistant depression. Janssen Pharmaceutica hide caption

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Janssen Pharmaceutica

FDA Approves Esketamine Nasal Spray For Hard-To-Treat Depression

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A screening test for signs of Alzheimer's disease takes only a few minutes, but many doctors don't perform one during older people's annual wellness visits. Westend61/Getty Images hide caption

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Westend61/Getty Images

Alzheimer's Screenings Often Left Out Of Seniors' Wellness Exams

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FDA Expected To Approve Esketamine Nasal Spray For Depression

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Person undergoing a CAT scan in hospital with PET scan equipment. Emerging studies report findings of brain deterioration in females to be slower than that of males'. Johnny Greig/Getty Images hide caption

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Johnny Greig/Getty Images

Scans Show Female Brains Remain Youthful As Male Brains Wind Down

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Ariel Davis for NPR

From Fruit Fly To Stink Eye: Searching For Anger's Animal Roots

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Cleanup workers rake oil-soaked hay along a Santa Barbara beach in 1969, after an oil spill that was then the largest in U.S. history. Bettmann/Getty Images hide caption

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Bettmann/Getty Images

How California's Worst Oil Spill Turned Beaches Black And The Nation Green

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A colorized image of a brain cell from an Alzheimer's patient shows a neurofibrillary tangle (red) inside the cytoplasm (yellow) of the cell. The tangles consist primarily of a protein called tau. SPL/Science Source hide caption

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SPL/Science Source

Alzheimer's Disease May Develop Differently In African-Americans, Study Suggests

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Researchers say human brains can become overwhelmed by cute traits, such as large eyes and small noses, embodied by movie characters like Bambi. Disney Junior/Disney Channel via Getty Images hide caption

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Disney Junior/Disney Channel via Getty Images

When Too Cute Is Too Much, The Brain Can Get Aggressive

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Research inspired by soccer headers has led to fresh insights into how the brain weathers hits to the head. Photo illustration by David Madison/Getty Images hide caption

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Photo illustration by David Madison/Getty Images

Bad Vibes: How Hits To The Head Are Transferred To The Brain

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Before light reaches these rods and cones in the retina, it passes through some specialized cells that send signals to brain areas that affect whether you feel happy or sad. Omikron /Getty Images/Science Source hide caption

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Omikron /Getty Images/Science Source

Scientists Find A Brain Circuit That Could Explain Seasonal Depression

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