correspond exactly to waves this creates powerful new oscillations so during the night the patterns move back and forth like a swing. we push that swing when it's up so that it will continue to swing and swing longer. and that enhances the processes of memory consolidation or the reactivation of memory traces in the hippocampus and it transfers to the cortex with the two after. the subject is tested right after she wakes up she will be asked to recall the word pairs that she memorized the night before. and subjects can usually remember