And to make matters worse…Old memories interfere with new ones!
So not only does it take energy to erase information, if you don’t “your brain gets full”.
Well not exactly, but according to this article when the pattern of brain activity for the older memory was stronger, the participants were more likely to fail to correctly recall the newer memory, the team reports. Even when a person successfully reported the new memory, traces of the old memory were called to mind. What’s more, when the new and old memory strengths were evenly matched, the participants took longer to answer. “We’re seeing evidence of things people are trying to not remember,” Kuhl says.