Are age-related changes in cognitive function driven by age-related changes in sensory processing?
Are age-related changes in cognitive function driven by age-related changes in sensory processing?
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DOI：
10.3758/s13414-012-0406-9
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发表时间：
2013-04
期刊：
影响因子：
--
通讯作者：
Kewley-Port D
中科院分区：
文献类型：
--
作者：
Humes LE;Busey TA;Craig J;Kewley-Port D
尽管多年来人们对感觉功能和认知功能的测量之间的关联非常感兴趣，但一般来说，感觉功能的测量仅限于一种或两种感觉和阈值敏感度（敏锐度）的测量。在这项研究中，严格的心理物理措施的阈值灵敏度，时间间隙检测，时序识别，和时间掩蔽，在听觉，视觉和触觉。此外，所有受试者完成了韦氏成人智力量表第三版（WAIS-III）的15个分测验。数据来自245名成年人（18-87岁）的WAIS-III和40个措施的阈值敏感性和时间处理。本报告的重点是整个数据集性能的个体差异。主成分（PC）因素分析减少了40个心理物理措施，8个相关因素，进一步减少到一个单一的全球感官处理因素。同样，15个WAIS-III评分的PC因素分析得出三个相关因素，进一步减少到一个单一的整体认知功能因素。年龄、整体感觉处理和整体认知功能都是中度和显著相关的。然而，配对偏相关，控制这三个措施中的第三个，揭示了年龄和全球认知功能之间的中度相关性为零时，全球感觉处理控制;其他两个偏相关性保持不变。结构模型证实了这一结果。这些分析表明，认知功能的年龄相关变化的长期观察可能是由年龄相关的全球感觉处理的变化介导的。
Although there has been keen interest in the association among measures of sensory function and cognitive function for many years, in general, measures of sensory function have been confined to one or two senses and measures of threshold sensitivity (acuity). In this study, rigorous psychophysical measures of threshold sensitivity, temporal gap detection, temporal order identification, and temporal masking have been obtained, in hearing, vision, and touch. In addition, all subjects completed 15 subtests of the Wechsler Adult Intelligence Scale, 3rd edition (WAIS–III). Data were obtained from 245 adults (18–87 years old) for the WAIS–III and for 40 measures of threshold sensitivity and temporal processing. The focus in this report is on individual differences in performance for the entire data set. Principal-components (PC) factor analysis reduced the 40 psychophysical measures to eight correlated factors, which were reduced further to a single global sensory processing factor. Similarly, PC factor analysis of the 15 WAIS–III scores resulted in three correlated factors that were further reduced to a single global cognitive function factor. Age, global sensory processing, and global cognitive function were all moderately and significantly correlated with one another. However, paired partial correlations, controlling for the third of these three measures, revealed that the moderate correlation between age and global cognitive function went to zero when global sensory processing was controlled for; the other two partial correlations remained intact. Structural models confirmed this result. These analyses suggest that the long-standing observation of age-related changes in cognitive function may be mediated by age-related changes in global sensory processing.
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影响因子：
2.8
作者：
Humes, Larry E.;Kewley-Port, Diane;Fogerty, Daniel;Kinney, Dana
通讯作者：
Kinney, Dana
影响因子：
--
作者：
Lin, Frank R.;Metter, E. Jeffrey;O'Brien, Richard J.;Resnick, Susan M.;Zonderman, Alan B.;Ferrucci, Luigi
通讯作者：
Ferrucci, Luigi
DOI：
10.1093/gerona/glr115
发表时间：
2011-10-01
影响因子：
5.1
作者：
Lin, Frank R.
通讯作者：
Lin, Frank R.
影响因子：
3
作者：
BERGNER, M;BOBBITT, RA;GILSON, BS
通讯作者：
GILSON, BS
DOI：
10.1093/geronj/46.2.p67
发表时间：
1991-03-01
期刊：
JOURNALS OF GERONTOLOGY
影响因子：
--
作者：
MARSHALL, L
通讯作者：
MARSHALL, L