Age-related differences in the detection of three-dimensional surfaces from optic flow
Age-related differences in the detection of three-dimensional surfaces from optic flow
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DOI：
10.1037/0882-7974.10.4.650
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发表时间：
1995-12-01
影响因子：
3.7
通讯作者：
Atchley, P
中科院分区：
文献类型：
--
作者：
Andersen, GJ;Atchley, P
本研究探讨了年龄相关的差异的敏感性，光流检测的3-D表面。观察员提出了模拟三维波纹表面或随机速度模式的光流显示，并要求检测三维波纹表面显示。发现老年人（平均年龄= 71岁）与年轻人（平均年龄= 21岁）相比，在密度和重复频率的变化观察员的性能下降。年长的观察者也表现出运动连贯性任务的性能下降，但在这项任务上的性能与3-D表面检测任务上的性能并不显著相关。这些结果表明，2-D运动任务的性能不一定是预测复杂的3-D运动任务的性能。此外，研究结果表明，不同的过程的基础上的2-D和3-D运动的分析。
The present study examined age-related differences in sensitivity to optic flow for the detection of 3-D surfaces. Observers were presented with optic flow displays simulating either a 3-D corrugated surface or a random velocity pattern and were asked to detect the 3-D corrugated surface display. Performance decrements were found for older(mean age = 71) compared with younger(mean age = 21) observers across variations in density and corrugation frequency. Older observers also showed performance decrements for a motion coherence task, but performance on this task was not significantly correlated with performance on the 3-D surface detection task. These results suggest that performance on 2-D motion tasks is not necessarily predictive of performance on complex 3-D motion tasks. In addition, the results suggest that different processes underlie the analysis of 2-D and 3-D motion.