People's memories of fearful events can be specifically diminished during sleep, reports a study published online this week in Nature Neuroscience. These findings add to our understanding of the types of learning that can occur during sleep, and may inform our efforts to treat fear disorders, such as post-traumatic stress disorder. Katherina Hauner and colleagues trained participants to associate an odor with a mild electric shock. They found that individuals would experience a fear response, measured by the amount they sweat, when they smelled that odor later in the day...
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