目的探讨不同年龄正常人群记忆错误(FM)的特征。方法对青年组(20~30岁)、中年组(40~50岁)及老年组(65~85岁)各30名健康人在神经心理学背景测试[包括简明精神状态检查(MMSE)量表、词汇流畅性测试(VFT)、数字广度(DS)、画钟测试(CDT)、Rey-听觉词汇学习测试(AVLT)]的基础上,进行图片诱发情景记忆错误试验。结果 (1)神经心理学背景测试结果:与青年组和中年组比较,老年组MMSE、DS顺背、CDT、AVLT即刻和延迟回忆得分明显降低(均P〈0.05);青年组、中年组和老年组在DS倒背、AVLT的延迟再认得分依次明显递减(均P〈0.05);(2)图片诱发情景记忆错误试验结果:与青年组和中年组比较,老年组卡片回忆率[(68±17)%]、故事成份回忆率[(77±14)%]、正确再认率[(73±12)%]明显降低(均P〈0.05);记忆错误率[(24±13)%]、记忆错误发生率[(25±7)%]均明显高于中年组[(14±6)%、(15±4)%],中年组明显高于青年组[(8±7)%、(9±6)%](均P〈0.05)。结论随着年龄的增长情景记忆下降,情景记忆错误增加,可能是导致老年人主观抱怨增加的主要原因。
Objective To explore the characteristic of false memory(FM) among normal adults with different ages.Methods On the basis of neuropsychological background tests including mini-mental state examination(MMSE) scale,vocabulary fluency test(VFT),digit span(DS),clock drawing test(CDT),auditory vocabulary learning test(AVLT),the test of inducing episodic memory error with photos were proformed in the young group(20-30 years old),middle-aged group(40-50 years old) and elderly group(65-85 years old),30 cases in each group.Results(1)The neuropsychological background test results: compared with young and middle-aged groups,the scores of MMSE,DS,CDT and AVLT in elderly group were significantly lower(allP〈0.05);the scores of DS repeating backwards and AVLT immediate and delayed memory in young,middle-aged and elderly groups were significantly decreasing in turn(allP〈0.05).(2)Photo-inducing episodic memory error test results: compared with the young and middle-aged groups,in elderly group the rates of card memory rate [(68±17)%],story ingredients recall [(77±14)%]and recognize correct[(73±12)%]were remarkably lower(all P 〈 0.05).The rate of memory error [(24±13)%],and incdence of memory error [(25±7)%]were significantly higher than those in the middle-aged group [(14±6)%,(15±4)%],while,the middle-aged group were significantly higher than those in the young group [(8±7)%,(9±6)%](all P〈 0.05).Conclusion Episodic memory declines and episodic memory errors rises along with age growth,both of which maybe the main reason for the increase of the elderly’s subjective complaint.