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The role of ageing on searching for a multisensory object in 3-dimensional arrays

机译：老化在三维阵列中搜索多师语对象的作用

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With ageing sensory acuity declines, however, recent studies suggest that perception is compensated by combining inputs from across the various senses [Laurienti, et al., 2006]. However, perception can be compromised when unrelated sensory information is combined across the senses [Poliakoff et al., 2006]. What is not known is how efficient is multisensory integration in older adults when the task is to search for an object in a large spatial array. In a task involving visual target localisation, we investigated whether an auditory stimulus presented from the same location improves performance relative to a visual-only condition and whether an auditory target presented to a different location (left or right, in front or behind) to the visual target compromises performance. We also tested whether these effects were more pronounced in older than younger adults. In Experiment 1, we manipulated the spatial congruency between the auditory and visual events along the depth plane (z-axis) and in Experiment 2 along the horizontal plane (x-axis). Overall, performance was worse for older than younger adults in both experiments. In particular, performance in the older adults group did not benefit from spatial congruency between the visual target and the auditory non target, but it was hindered by a sound coming from a spatially incongruent depth location. Conversely, in Exp.2 no detrimental effect of a spatially incongruent sound on the horizontal plane was found in the older adult group suggesting that visuo-spatial processing is not affected by sounds mislocated to the left or right. These results show that when auditory and visual stimuli are available older adults may integrate unreliable auditory inputs to perform a visual task, in particular along the depth plane. These findings support the idea that multisensory integration is enhanced in older relative to younger adults.
机译：然而，随着衰老的感觉敏锐度下降，最近的研究表明，通过将来自各种感官的输入组合[Laurienti等，2006]来补偿感知来补偿感知。然而，当在传感中混合不相关的感官信息时，可以损害感知[Pogiakoff等，2006]。尚未知道的是，当任务是在大型空间阵列中搜索对象时，旧成年人的多思考程度如何效率。在涉及视觉目标本地化的任务中，我们研究了从相同位置提出的听觉刺激是否可提高相对于视觉唯一条件的性能，以及是否呈现给不同位置的听觉目标（左或右，前后或后面）视觉目标会妥协性能。我们还测试了这些效果是否比年轻成年人更加明显。在实验1中，我们沿着深度平面（Z轴）和沿水平平面（X轴）在实验2中操纵听觉和视觉事件之间的空间组合。总体而言，在两项实验中比较年轻的成年人更糟糕的表现更糟。特别是，较老成人组的性能并未受益于视觉目标与听觉非目标之间的空间一致性，但它受到来自空间不一致的深度位置的声音受阻。相反，在Exp.2中，在旧成年组中发现了在较旧的成人组中发现了空间不协调声音的不利影响，表明Visuo-Spatial处理不受左侧或右侧的声音不受影响的影响。这些结果表明，当有检测和视觉刺激时，老年人可以集成不可靠的听觉输入，以执行视觉任务，特别是沿着深度平面。这些调查结果支持多福音型集成在更老年人的比较年龄增强。

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