brain brain

Rats and people may rely on "metamemory" in a variety of different ways, scientists say. For a rat, it's likely about knowing whether you remember that predator in the distance; for people, knowing what we don't know helps us navigate social interactions. fotografixx/Getty Images/iStockphoto hide caption

toggle caption
fotografixx/Getty Images/iStockphoto

From Rats To Humans, A Brain Knows When It Can't Remember

  • Download
  • <iframe src="https://www.npr.org/player/embed/539761740/540652630" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript
Angie Wang for NPR

The Roots Of Consciousness: We're Of 2 Minds

  • Download
  • <iframe src="https://www.npr.org/player/embed/532920899/533102652" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

NIH Director Francis Collins and Renée Fleming, who is Artistic Advisor at Large for the Kennedy Center in Washington, D.C., sing a duet. Shelby Knowles/NPR hide caption

toggle caption
Shelby Knowles/NPR

The Soprano And The Scientist: A Conversation About Music And Medicine

  • Download
  • <iframe src="https://www.npr.org/player/embed/530879198/531269123" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Sometime between grade school and grad school, the brain's information highways get remapped in a way that dramatically boosts self-control. Thomas Trutschel/Photothek via Getty Images hide caption

toggle caption
Thomas Trutschel/Photothek via Getty Images

As Brains Mature, More Robust Information Networks Boost Self-Control

  • Download
  • <iframe src="https://www.npr.org/player/embed/529828305/530257570" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Researchers found that a protein in human umbilical cord blood plasma improved learning and memory in older mice, but there's no indication it would work in people. Mike Kemp/Rubberball/Getty Images hide caption

toggle caption
Mike Kemp/Rubberball/Getty Images

Human Umbilical Cord Blood Helps Aging Mice Remember, Study Finds

  • Download
  • <iframe src="https://www.npr.org/player/embed/523975844/524751655" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript
Lisa Zador/Getty Images

A 'Hot Zone' In The Brain May Reveal When, And Even What, We Dream

  • Download
  • <iframe src="https://www.npr.org/player/embed/523262108/523311532" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

State and federal policies now limit the use of lead in gasoline, paint and plumbing, but children can still ingest the metal through contaminated soil. The effects of even fairly small amounts can be long-lasting, the evidence suggests. Christin Lola/Getty Images/iStockphoto hide caption

toggle caption
Christin Lola/Getty Images/iStockphoto

Childhood Exposure To Lead Can Blunt IQ For Decades, Study Suggests

  • Download
  • <iframe src="https://www.npr.org/player/embed/521644395/521823525" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Embryoids like this one are created from stem cells and resemble very primitive human embryos. Scientists are studying them in hopes of learning more about basic human biology and development. Courtesy of Rockefeller University hide caption

toggle caption
Courtesy of Rockefeller University
Keith Negley for NPR

Prion Test For Rare, Fatal Brain Disease Helps Families Cope

  • Download
  • <iframe src="https://www.npr.org/player/embed/508241181/513388177" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

A self-portrait taken by Cajal in his library when he was in his 30s. Courtesy Instituto Cajal del Consjo Superior de Investigaciones Científicas, Madrid hide caption

toggle caption
Courtesy Instituto Cajal del Consjo Superior de Investigaciones Científicas, Madrid

Art Exhibition Celebrates Drawings By The Founder Of Modern Neuroscience

  • Download
  • <iframe src="https://www.npr.org/player/embed/511455876/511851809" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

A mouse with predatory brain circuits switched on is much more likely to attack and kill prey like this cricket. Courtesy of Ivan de Araujo/Cell Press hide caption

toggle caption
Courtesy of Ivan de Araujo/Cell Press

Flipping A Switch In The Brain Turns Lab Rodents Into Killer Mice

  • Download
  • <iframe src="https://www.npr.org/player/embed/509487126/509624540" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript