Learn While You Sleep - Not as interesting as it sounds

Stupid, misleading Digg story. The reasearch is thing. Basicaly some neuroscientist from the university of luben applied a .75 hz electric current during non-rem sleep to participants. Before going to sleep the participants were given a word list to and finger tapping task to remember. The word list would test their delcaritive memory, facts. The finger tapping would test their motor memory. The conclusion was a 8% increase in the word list memory only. Rightly, another scientist points out that these results don't really prove anything since so many factors are at play here. I would like to have him test something other than word pairs. No great memory cure here. The most interesting fact was that we spend 20% in Rem sleep, and the rest in non-rem sleep. This guy thinks that during the non-rem sleep, when the brain waves are slow and synchronized, we neurons replay events and form strong memories. The article is was so weak, I have a hard time trusting anything it said.