Semantic congruence is a critical factor in multisensory behavioral performance
Semantic congruence is a critical factor in multisensory behavioral performance
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DOI：
10.1007/s00221-004-1913-2
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发表时间：
2004-10-01
影响因子：
2
通讯作者：
Wallace, MT
中科院分区：
文献类型：
--
作者：
Laurienti, PJ;Kraft, RA;Wallace, MT
已经反复证明，不同感官模式中多种线索的存在可以通过加速反应、提高准确性和/或改善刺激检测来增强行为表现。尽管关于多感觉刺激的空间、时间和物理（例如强度）特征如何影响这种增强有广泛的知识基础，但人们对语义或上下文一致性的作用知之甚少。我们的假设是，语义一致的多感官刺激会导致行为表现增强，而语义不一致的多感觉刺激会导致行为表现没有增强或下降。冗余线索特征辨别任务的结果清楚地表明一致的跨模式刺激可以改善行为表现。这种效应是多感官刺激所特有的，因为在存在冗余单峰刺激对的情况下没有看到任何改善。相反，不一致的刺激对会导致多感官刺激和配对单峰刺激的行为减弱。这些结果强调，除了空间、时间和相对有效性等简单的刺激特征之外，多感官刺激的语义内容在确定神经系统如何处理它方面发挥着关键作用。
It has repeatedly been demonstrated that the presence of multiple cues in different sensory modalities can enhance behavioral performance by speeding responses, increasing accuracy, and/or improving stimulus detection. Despite an extensive knowledge base as to how the spatial, temporal, and physical (e.g., intensity) characteristics of multisensory stimuli influence such enhancements, little is known about the role of semantic or contextual congruence. Our hypothesis was that semantically congruent multisensory stimuli would result in enhanced behavioral performance, and that semantically incongruent multisensory stimuli would result in either no enhancement or a decrement in behavioral performance. The results from a redundant cue feature discrimination task clearly demonstrate that congruent cross-modal stimulation improves behavioral performance. This effect is specific to the multisensory stimuli, as no improvements are seen in the presence of redundant unimodal stimulus pairs. In contrast, incongruent stimulus pairs result in behavioral decrements for both multisensory and paired unimodal stimuli. These results highlight that in addition to such simple stimulus features as space, time and relative effectiveness, the semantic content of a multisensory stimulus plays a critical role in determining how it is processed by the nervous system.