Enhanced multisensory integration in older adults
Enhanced multisensory integration in older adults
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DOI：
10.1016/j.neurobiolaging.2005.05.024
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发表时间：
2006-08-01
影响因子：
4.2
通讯作者：
Wallace, Mark T.
中科院分区：
文献类型：
--
作者：
Laurienti, Paul J.;Burdette, Jonathan H.;Wallace, Mark T.
大脑将来自不同感官的信息无缝整合，以改变我们的行为并丰富我们的感知。只有通过对来自不同感官的信息进行恰当的结合与整合，才能产生有意义且准确的知觉完形。尽管对于这种跨模态相互作用如何影响成年人的行为和感知已有很多了解，但对于衰老对这些多感官过程的影响却知之甚少。在当前的研究中，我们检测了老年人和年轻人对视觉、听觉或视觉 - 听觉组合刺激呈现的辨别反应速度。尽管多感官刺激加快了两组的反应时间，但老年人的表现增益明显更大。最引人注目的是，多感官刺激使老年人的反应时间恢复到与年轻人对两种单感官刺激中较快的那种（即视觉刺激）相同的水平。目前的研究结果表明，尽管衰老伴随着感官处理能力的下降，但使用多种感官通道可能是克服这些单感官缺陷的一种有效补偿策略。（c）2005爱思唯尔公司。保留所有权利。
Information from the different senses is seamlessly integrated by the brain in order to modify our behaviors and enrich our perceptions. It is only through the appropriate binding and integration of information from the different senses that a meaningful and accurate perceptual gestalt can be generated. Although a great deal is known about how such cross-modal interactions influence behavior and perception in the adult, there is little knowledge as to the impact of aging on these multisensory processes. In the current study, we examined the speed of discrimination responses of aged and young individuals to the presentation of visual, auditory or combined visual-auditory stimuli. Although the presentation of multisensory stimuli speeded response times in both groups, the performance gain was significantly greater in the aged. Most strikingly, multisensory stimuli restored response times in the aged to those seen in young subjects to the faster of the two unisensory stimuli (i.e.. visual). The current results suggest that despite the decline in sensory processing that accompanies aging, the use of multiple sensory channels may represent an effective compensatory strategy to overcome these unisensory deficits. (c) 2005 Elsevier Inc. All rights reserved.