In an experiment, patients were first shown a troubling story, in words and pictures. A week later they were reminded about it and given electroconvulsive therapy, formerly known as electroshock. That completely wiped out their recall of the distressing narrative.
"It's a pretty strong effect. We observed it in every subject," said Marijn Kroes, neuroscientist at Radboud University Nijmegen in the Netherlands and lead author of the study, published Sunday in the journal Nature Neuroscience.
The experiment recalls the plot of the movie "Eternal Sunshine of the Spotless Mind," in which an estranged couple erase memories of each other.