Professor Robert Stickgold of Harvard Medical School used 24 volunteers — half of them were allowed a night’s sleep after a learning session, while the rest were kept awake all night.
Profesor Robert Stickgold dari Fakultas Kedokteran Harvard menggunakan 24 relawan — setengahnya tidur semalaman setelah mengikuti sebuah kuliah, sementara sisanya tetap terjaga semalaman.