Normal Aging Delays and Compromises Early Multifocal Visual Attention during Object Tracking
Normal Aging Delays and Compromises Early Multifocal Visual Attention during Object Tracking
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正常衰老会延迟并损害物体跟踪过程中的早期多焦点视觉注意力
DOI：
10.1162/jocn_a_00303
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发表时间：
2013
影响因子：
3.2
通讯作者：
U. Lindenberger
中科院分区：
文献类型：
--
作者：
Viola S. Störmer;Shu;H. Heekeren;U. Lindenberger
选择性注意力的下降是导致广泛认知功能中与年龄相关的障碍的来源之一。大多数以前的研究老年人的选择缺陷的机制研究了视觉注意静态对象和功能的部署。在这里，我们调查神经相关的年龄相关的空间注意力的差异，多个物体，因为他们移动。我们使用了一个多对象跟踪任务，其中年轻人和老年人被要求跟踪移动目标对象，随机移动在视野中不相关的干扰对象。通过记录大脑在跟踪期间的电生理反应，我们能够描绘出在视觉处理的早期阶段（大约100-300毫秒）的目标和干扰物的神经处理。与年轻人相比，老年人在视觉P1分量的早期阶段（100-125毫秒）表现出较少的选择性注意力调节，这表明老年人的早期选择受到影响。然而，与年轻人相比，老年人有25毫秒的延迟，老年人表现出不同的目标处理（125-150毫秒），即延迟但完整的注意力调节。这种延迟注意力调节的幅度与老年人的跟踪性能有关。老年人的N1分量（175-210毫秒）的振幅小于年轻人，老年人的该分量的靶放大效应也小于年轻人。总的来说，这些结果表明，正常老化影响多目标跟踪过程中早期视觉处理的效率和时间。
Declines in selective attention are one of the sources contributing to age-related impairments in a broad range of cognitive functions. Most previous research on mechanisms underlying older adults' selection deficits has studied the deployment of visual attention to static objects and features. Here we investigate neural correlates of age-related differences in spatial attention to multiple objects as they move. We used a multiple object tracking task, in which younger and older adults were asked to keep track of moving target objects that moved randomly in the visual field among irrelevant distractor objects. By recording the brain's electrophysiological responses during the tracking period, we were able to delineate neural processing for targets and distractors at early stages of visual processing (∼100–300 msec). Older adults showed less selective attentional modulation in the early phase of the visual P1 component (100–125 msec) than younger adults, indicating that early selection is compromised in old age. However, with a 25-msec delay relative to younger adults, older adults showed distinct processing of targets (125–150 msec), that is, a delayed yet intact attentional modulation. The magnitude of this delayed attentional modulation was related to tracking performance in older adults. The amplitude of the N1 component (175–210 msec) was smaller in older adults than in younger adults, and the target amplification effect of this component was also smaller in older relative to younger adults. Overall, these results indicate that normal aging affects the efficiency and timing of early visual processing during multiple object tracking.
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处理需求增加对工作记忆年龄差异的影响。
影响因子：
3.7
作者：
Babcock,RL;Salthouse,TA
通讯作者：
Salthouse,TA
高容量、瞬时保留多个移动物体的运动方向信息。
影响因子：
1.8
作者：
Shooner,Christopher;Tripathy,SrimantP;Bedell,HaroldE;Ogmen,Haluk
通讯作者：
Ogmen,Haluk
DOI：
10.1016/0013-4694(90)90138-a
发表时间：
1990-06-01
期刊：
ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY
影响因子：
--
作者：
HEINZE, HJ;LUCK, SJ;HILLYARD, SA
通讯作者：
HILLYARD, SA
DOI：
10.1037/0096-1523.20.4.887
发表时间：
1994-08-01
影响因子：
2.1
作者：
LUCK, SJ;HILLYARD, SA;HAWKINS, HL
通讯作者：
HAWKINS, HL
DOI：
10.1098/rstb.1998.0281
发表时间：
1998-08-29
期刊：
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES B-BIOLOGICAL SCIENCES
影响因子：
--
作者：
Hillyard, SA;Vogel, EK;Luck, SJ
通讯作者：
Luck, SJ