Bistable perception in normal aging: perceptual reversibility and its relation to cognition.
Bistable perception in normal aging: perceptual reversibility and its relation to cognition.
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DOI：
10.1080/13825585.2016.1173646
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发表时间：
2017-03
期刊：
影响因子：
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通讯作者：
Cronin-Golomb A
中科院分区：
文献类型：
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作者：
Díaz-Santos M;Mauro S;Cao B;Yazdanbakhsh A;Neargarder S;Cronin-Golomb A
年龄对解决感知模糊能力的影响尚不清楚，尽管它取决于已知随年龄变化的额顶叶注意网络。我们将双稳态Necker立方体呈现给24名中老年成人（OA； 56-78岁）和20名年轻成人（YA； 18-24岁），在被动观看和意志控制条件下：持有一个立方体感知并在立方体感知之间切换。在被动观看时，OA比YA有更长的优势持续时间（在每个感知上花费的时间）。在保持条件下，OA增加优势持续时间的能力不如YA。在Switch条件下，OA和YA在性能上没有差异。两种情况下的优势持续时间与额叶介导的执行功能测试的表现相关。眼球运动（注视偏差）在两组之间没有差异。这些结果表明，OA保持感知能力的下降可能是由于选择性注意的减少。Hold和执行功能测量之间缺乏相关性表明，至少潜在机制存在部分分离。
The effects of age on the ability to resolve perceptual ambiguity are unknown, though it depends on fronto-parietal attentional networks known to change with age. We presented the bistable Necker cube to 24 middle-aged and older adults (OA; 56–78 years) and 20 younger adults (YA; 18–24 years) under passive-viewing and volitional control conditions: Hold one cube percept and Switch between cube percepts. During passive viewing, OA had longer dominance durations (time spent on each percept) than YA. In the Hold condition, OA were less able than YA to increase dominance durations. In the Switch condition, OA and YA did not differ in performance. Dominance durations in either condition correlated with performance on tests of executive function mediated by the frontal lobes. Eye movements (fixation deviations) did not differ between groups. These results suggest that OA’s reduced ability to hold a percept may arise from reduced selective attention. The lack of correlation of performance between Hold and executive-function measures suggests at least a partial segregation of underlying mechanisms.