People unlearned an
odor's unpleasant accompaniment when they smelled it in their sleep
By Laura Sanders in Science News
A nap can ease the
burden of a painful memory. While fast asleep, people learned that a previously
scary situation was no longer threatening, scientists report September 22 in Nature
Neuroscience.
The results are the
latest to show that sleep is a special state in which many sorts of learning
can happen. And the particular sort of learning in the new study blunted a fear
memory, a goal of treatments for disorders such as phobias and post-traumatic stress
disorder.
“It’s a remarkable
finding,” says sleep neuroscientist Edward Pace-Schott of Harvard Medical
School and Massachusetts General Hospital.
Researchers led by
Katherina Hauner of Northwestern University’s Feinberg School of Medicine first
taught 15 (awake) volunteers to fear the combination of a face and odor.












