Hotchkiss Brain Institute, Department of Psychiatry, University of Calgary, Alberta, Canada.
Psychiatry Res. 2013 Apr 30;206(2-3):195-9. doi: 10.1016/j.psychres.2012.10.013. Epub 2012 Nov 16.
Cognitive impairment is common in psychosis and has recently been observed in individuals at clinical high risk (CHR) of developing psychosis. The purpose of this study was to characterize longitudinal change in cognition among CHR individuals, and compare cognition of CHR individuals who later convert to psychosis to that of CHR who do not convert. Participants were tested at baseline and followed-up after six months using a comprehensive cognitive test battery. Individuals who did not convert to psychosis either remained stable or significantly improved in their cognitive performance. At baseline participants who converted to psychosis compared to non-converters exhibited poorer performance in several cognitive tests, suggesting that some cognitive impairment is already present before conversion. Future longitudinal research should address if further decline takes place during the prodrome or after conversion to psychosis.
认知障碍在精神疾病中很常见,最近在有发展为精神疾病临床高风险(CHR)的个体中也观察到了这种情况。本研究的目的是描述 CHR 个体认知的纵向变化,并比较后来发展为精神病的 CHR 个体和未发展为精神病的 CHR 个体的认知。参与者在基线时接受测试,并在六个月后使用综合认知测试工具进行随访。未发展为精神病的个体的认知表现要么保持稳定,要么显著改善。在基线时,与未转换者相比,转换为精神病的参与者在几项认知测试中表现较差,这表明在转换之前已经存在一些认知障碍。未来的纵向研究应该解决在前驱期或转换为精神病后是否会进一步下降的问题。