Simultaneity and Temporal Order Judgments Are Coded Differently and Change With Age: An Event-Related Potential Study.
Simultaneity and Temporal Order Judgments Are Coded Differently and Change With Age: An Event-Related Potential Study.
复制标题
DOI：
10.3389/fnint.2018.00015
复制
发表时间：
2018
影响因子：
3.5
通讯作者：
Barnett-Cowan M
中科院分区：
文献类型：
--
作者：
Basharat A;Adams MS;Staines WR;Barnett-Cowan M
许多日常生活任务都需要多感官整合，而无法准确识别多感官事件的同时性和暂时性会导致判断错误，从而导致决策失误和危险行为。此前，我们的实验室发现老年人表现出视听事件时间安排受损，特别是在做出时间顺序判断（TOJ）时。然而，同时性判断（SJ）在整个生命周期中都得到保留。在这里，我们研究了年轻人和老年人中 TOJ 和 SJ 任务之间的差异，以评估这两项任务之间以及整个生命周期中神经处理的差异。研究事件相关电位（ERP）以确定任务间和年龄间的差异。结果揭示了感知同时性和时间顺序方面任务特定的差异，这表明每个任务可能通过不同的神经机制来实现。在这里，听觉 N1 和视觉 P1 ERP 振幅证实，年轻组和年长组中的两项任务对视听刺激的单感觉处理没有差异，这表明任务之间的表现差异要么来自多感觉整合，要么来自更高层次的决策。与年轻人相比，老年人在整个 SOA 中表现出持续较高的听觉 N1 ERP 振幅响应，这表明延长的时间结合窗口具有更广泛的响应特性。我们的工作提供了令人信服的证据，证明不同的神经机制有助于 SJ 和 TOJ 任务，同时性和时间顺序感知的编码方式不同，并随着年龄的增长而变化。
Multisensory integration is required for a number of daily living tasks where the inability to accurately identify simultaneity and temporality of multisensory events results in errors in judgment leading to poor decision-making and dangerous behavior. Previously, our lab discovered that older adults exhibited impaired timing of audiovisual events, particularly when making temporal order judgments (TOJs). Simultaneity judgments (SJs), however, were preserved across the lifespan. Here, we investigate the difference between the TOJ and SJ tasks in younger and older adults to assess neural processing differences between these two tasks and across the lifespan. Event-related potentials (ERPs) were studied to determine between-task and between-age differences. Results revealed task specific differences in perceiving simultaneity and temporal order, suggesting that each task may be subserved via different neural mechanisms. Here, auditory N1 and visual P1 ERP amplitudes confirmed that unisensory processing of audiovisual stimuli did not differ between the two tasks within both younger and older groups, indicating that performance differences between tasks arise either from multisensory integration or higher-level decision-making. Compared to younger adults, older adults showed a sustained higher auditory N1 ERP amplitude response across SOAs, suggestive of broader response properties from an extended temporal binding window. Our work provides compelling evidence that different neural mechanisms subserve the SJ and TOJ tasks and that simultaneity and temporal order perception are coded differently and change with age.
登录
查看更多内容
DOI：
10.1682/jrrd.2005.01.0006
发表时间：
2005-07-01
影响因子：
--
作者：
Gordon-Salant, S
通讯作者：
Gordon-Salant, S
影响因子：
2
作者：
Barnett-Cowan, Michael;Harris, Laurence R.
通讯作者：
Harris, Laurence R.
影响因子：
2.6
作者：
Diederich, Adele;Colonius, Hans;Schomburg, Annette
通讯作者：
Schomburg, Annette
影响因子：
1.7
作者：
DIXON, NF;SPITZ, L
通讯作者：
SPITZ, L
影响因子：
5.7
作者：
Gao, Fei;Edden, Richard A. E.;Li, Muwei;Puts, Nicolaas A. J.;Wang, Guangbin;Liu, Cheng;Zhao, Bin;Wang, Huiquan;Bai, Xue;Zhao, Chen;Wang, Xin;Barker, Peter B.
通讯作者：
Barker, Peter B.