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Medical tablet displaying cerebral activity

Why Are Some Scientists Turning Away From Brain Scans?

Sometimes, brain scans just sound like popular opinion. What's wrong?

Brain scans have brought us many benefits, including the discovery that people (or rats for that matter) can function normally without most of their brain. Without such scans, there was no way to be sure. But, as with any technology, there are problems: Studies of brain images have suggested that Republicans and Democrats have visibly different thinking, that overweight adults have stronger responses to pictures of food and that it’s possible to predict a sober person’s likelihood of relapse. But such buzzy findings are coming under growing scrutiny as scientists grapple with the fact that some brain scan research doesn’t seem to hold up. Such studies have been criticized for relying on too few subjects and for incorrectly analyzing or…