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首页> 外文期刊>Neuropsychology >Mind-Wandering in Healthy Aging and Early Stage Alzheimer's Disease
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Mind-Wandering in Healthy Aging and Early Stage Alzheimer's Disease

机译：在健康老龄化和早期的阿尔茨海默病疾病中徘徊

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Objective: The frequency of mind-wandering (MW) decreases as a function of age in healthy individuals. One possible explanation is that MW is a resource-dependent process, and cognitive resources decline with age. The present study provides the first investigation of MW in the earliest stages of Alzheimer's disease (AD) to further examine the resource model and discontinuities between healthy aging and AD. Method: Three large cohorts completed the Sustained Attention to Response Task (SART): a healthy middle-aged group (mean age = 61.79 +/- 5.84 years; N = 270), a healthy older adult group (mean age = 76.58 +/- 5.27 years; N = 282), and a group with early stage AD (mean age = 76.08 +/- 7.17; N = 77), comparable in age to the second group. Results: Self-reports of MW during the SART decreased as a function of age, and there was a further decrease in the AD group. All 3 groups produced faster responses on trials before No-Go errors, suggesting MW occurred in all cohorts. After No-Go errors, healthy older adults slowed disproportionately compared with middle-aged adults. This was not evident in AD individuals who showed posterror slowing comparable with that in the middle-aged group. Conclusions: The decreased self-reported MW in older adults and the further decline in AD are consistent with the cognitive resource account of MW. Behavioral indices suggest that AD is on a continuum with healthy aging, with the exception of posterror slowing that may suggest performance monitoring deficits in early AD individuals (e.g., lack of error awareness).
机译：目的：心灵徘徊（MW）的频率随着健康个体年龄的函数而降低。一个可能的解释是MW是资源依赖的过程，而认知资源随着年龄的增长而下降。本研究提供了阿尔茨海默病（AD）最早阶段的首次调查MW，以进一步检查健康老化和广告之间的资源模型和不连续性。方法：三个大型队列完成了持续关注响应任务（SART）：健康的中年组（平均年龄= 61.79 +/- 5.84岁; N = 270），一个健康的老年成人组（平均年龄= 76.58 + / - 5.27岁; n = 282），以及具有早期广告的组（平均年龄= 76.08 +/- 7.17; n = 77），同比增长到第二组。结果：SAIT期间MW的自我报告随着年龄的职能而下降，广告组进一步减少。所有3组在无误差之前的试验中产生了更快的反应，建议在所有队列中发生MW。在禁止错误之后，与中年成年人相比，健康的老年人减缓了不成比例的速度。这在广告个人中并不明显，他们表现出与中年小组的速度相比的速度变慢。结论：老年人的自我报告的MW减少，广告进一步下降与MW的认知资源账户一致。行为索引表明，广告是在一个健康老龄化的连续体上，除了后翻腾减速，可能提出早期广告个人的表现监测赤字（例如，缺乏错误意识）。

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