4 aminobutyric acid A receptor 1 Article 1 Electroencephalography 1 GABAergic system 1 Memory 1 Memory Consolidation 1 Sleep 1 Zolpidem 1 association 1 comparative study 1 controlled study 1 double blind procedure 1 drug effect 1 electroencephalography 1 human 1 learning 1 male 1 memory 1 memory consolidation 1 normal human 1 oscillation 1 placebo 1 randomized controlled trial 1 sleep 1 sleep pattern 1 sleep spindle 1 sleep stage 1 slow wave sleep 1 somnolence 1 targeted memory reactivation