Neuroscience

How the brain makes new memories while preserving the old

Columbia scientists have developed a new mathematical model that helps to explain how the human brain's biological complexity allows it to lay down new memories without wiping out old ones—illustrating how the brain maintains ...

Medical research

Protein may improve liver regeneration

Researchers at UC Davis have illuminated an important distinction between mice and humans: how human livers heal. The difference centers on a protein called PPARα, which activates liver regeneration. Normally, mouse PPARα ...

Psychology & Psychiatry

Free will seems a matter of mind, not soul

A new study tested whether people believe free will arises from a metaphysical basis or mental capacity. Even though most respondents said they believed humans to have souls, they judged free will and assigned blame for transgressions ...

Health

As Armstrong case unfolds, experts describe doping's harms

(HealthDay)—In the wake of new allegations around Lance Armstrong's involvement in blood doping, experts are reminding the public of the devastating impact these substances can have on an athlete's health.

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