When our brain insists on reminding us of that awful thing we said at the party last night, most of us react by suppressing the thought (and perhaps groaning). This often works, found British neuroscientists Roland Benoit and Michael Anderson, who used an fMRI machine to trace the brain activity of people who were trying to forget something
. In a study published in the journal Neuron
, they explained that when we push a memory out of our head, activity in the hippocampus, the region of the brain critical for remembering the past, is inhibited. However, there's always the threat that the thought will pop up again... and again. Another trick that the scientists tested was thought substitution: Whenever you start rehashing the night, tell yourself instead to think about your vacation to Aruba, or reimagine every bite of a meal you enjoyed. Doing this will induce frenetic activity in the parts of the brain that need to work to retrieve memories and along the pathways to consciousness. The two thoughts will literally compete for your attention, so make the substitution memory engaging and pleasurable enough to win.