8Rechetschaffen A,Kale A. A manual of standardized terminology techniques and scoring system for stages of human subjects [M]. 3rd. Los Angels: Brain Information Service/Brain research Institute of University of Califonia, 1973:1- 2.
8I Cricco M, Simonsick E M, Foley D J. The impact of insomnia on cognitive functioning in older adults[ J]. Journal of Amrican Geri- atrics Society,2001,49(9) : 1185-1189.
