Gender difference in the effect of daytime sleep on declarative memory for pictures  

作　　者：Bo WANG Xiao-lan FU 

机构地区：[1]State Key Laboratory of Brain and Cognitive Seience, Institute of Psychology, Chinese Academy of Sciences, Beijing 100101, China [2]Graduate University of Chinese Academy of Sciences, Beijing 100049, China

出　　处：《Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)》2009年第7期536-546,共11页浙江大学学报（英文版）B辑（生物医学与生物技术）

基　　金：supported partially by the National Basic Research Program (973) of China (No. 2006CB303101);the National Natural Science Foundation of China (No. 90820305)

摘　　要：Objective:To investigate gender difference in the effects of daytime sleep on item and source memories,which are dissociable elements of declarative memory,and the effects of sleep on recollection and familiarity,which are two processes underlying recognition. Methods:Participants saw a series of pictures with either blue or red background,and were then given a pretest for item and source memories. Then males and females respectively were randomly assigned either to a wake or a sleep condition. In the wake condition,participants remained awake until the posttest;in the sleep condition,participants slept for 1 h until awakened and asked to remain awake until the posttest. Results:Daytime sleep contributed to retention of source memory rather than item memory in females,whereas males undergoing daytime sleep had a trend towards increased familiarity. For females,however,neither recollection nor familiarity appeared to be influenced by daytime sleep. Conclusion:The mechanism underlying gender difference may be linked with different memory traces resulting from different encoding strategies,as well as with different electrophysiological changes during daytime sleep.Objective： To investigate gender difference in the effects of daytime sleep on item and source memories, which are dissociable elements of declarative memory, and the effects of sleep on recollection and familiarity, which are two processes underlying recognition. Methods： Participants saw a series of pictures with either blue or red background, and were then given a pretest for item and source memories. Then males and females respectively were randomly assigned either to a wake or a sleep condition. In the wake condition, participants remained awake until the posttest; in the sleep condition, participants slept for 1 h until awakened and asked to remain awake until the posttest. Results： Daytime sleep contributed to retention of source memory rather than item memory in females, whereas males undergoing daytime sleep had a trend towards increased familiarity. For females, however, neither recollection nor familiarity appeared to be influenced by daytime sleep. Conclusion： The mechanism underlying gender difference may be linked with different memory traces resulting from different encoding strategies, as well as with different electrophysiological changes during daytime sleep.

关 键 词：Gender difference Declarative memory RECOLLECTION FAMILIARITY Daytime sleep 

分 类 号：Q427[生物学—神经生物学] V556.5[生物学—生理学]