By Bruno GeoffroyÂ
For decades, scientists have fiercely debated whether rapid eye movement (REM) sleep – the phase where dreams appear – is directly involved in memory formation.
Now, a study published in Science by researchers at the Douglas Mental Health University Institute (Ã山ǿ¼é) and the University of Bern provides evidence that REM sleep does, indeed, play this role – at least in mice.