杏吧原创

ARE you asleep? If the answer seems obvious, think again. We are starting to learn that there is a strange twilight zone between sleep and wakefulness (see 鈥淭he twilight zone鈥�). Some of the resulting altered states are rare, which is fortunate when it comes to somnambulant attempts at violence. Others, such as sleep paralysis, are harmless, if sometimes alarming. All could be caused by parts of the brain going 鈥渙ffline鈥�, unbeknown to its owner. So, unexpected as it may seem, valid answers to the above question include yes, no 鈥� and maybe.