,RESULTS: , This study was performed in 61 minutes in duration during which he slept 432 minutes after 19 minutes sleep onset latency; thereafter, he had 10 awakenings for 6 minutes of wakefulness giving him a normal sleep efficiency of 95%. 
,RESULTS : , This study was performed in 61 minutes in duration during which he slept 432 minutes after 19 minutes sleep onset latency ; thereafter , he had 10 awakenings for 6 minutes of wakefulness giving him a normal sleep efficiency of 95 % .