Inspection time in non-demented older adults with mild cognitive impairment

被引:18
作者
Bonney, Kathryn R.
Almeida, Osvaldo P.
Flicker, Leon
Davies, Simon
Clarnette, Roger
Anderson, Mike
Lautenschlager, Nicola T.
机构
[1] Univ Western Australia, Unit Geriatr Psychiat M573, Perth, WA 6009, Australia
[2] Royal Perth Hosp, Perth, WA, Australia
[3] Univ Western Australia, Unit Geriatr Med, Perth, WA 6009, Australia
[4] Univ Western Australia, Sch Psychol, Nedlands, WA 6009, Australia
关键词
inspection time; memory; ageing; speed; mild cognitive impairment;
D O I
10.1016/j.neuropsychologia.2005.12.002
中图分类号
B84 [心理学]; C [社会科学总论]; Q98 [人类学];
学科分类号
03 ; 0303 ; 030303 ; 04 ; 0402 ;
摘要
The aim of this study was to examine inspection time (IT) performance in older adults with mild cognitive impairment (MCI), who are at higher risk of developing further cognitive decline or dementia. IT is described as an index of speed of informational intake. IT correlates with measures of fluid intelligence and is possibly a marker for the integrity of the cholinergic system of the brain. IT may therefore be useful in aiding the diagnosis of early-stage progressive cognitive impairment. The current study compares IT in 28 people with MCI to 28 age, gender and education-matched controls. The computer-based, visual IT task required participants to discriminate between two visual stimuli that were presented for brief periods. Participants' IT performance was compared to their performance on cognitive and memory tasks. Group comparison showed that participants with MCI performed significantly worse on IT than controls and was not affected by years of education. In combination with other clinical, neuropsychological and biological tests, IT may be a useful assessment tool for improving the identification of older adults at risk for clinically relevant cognitive decline. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1452 / 1456
页数:5
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