Sensory-specific clock components and memory mechanisms: investigation with parallel timing
Sensory-specific clock components and memory mechanisms: investigation with parallel timing
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DOI：
10.1111/j.1460-9568.2010.07197.x
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发表时间：
2010-05-01
影响因子：
3.4
通讯作者：
Grondin, Simon
中科院分区：
文献类型：
--
作者：
Gamache, Pierre-Luc;Grondin, Simon
时间知觉领域的研究人员面临的一个挑战是确定时间处理是由一个中央机制还是由多个协同工作的机制控制的。对平行时间的行为研究为这个问题提供了有趣的见解，尽管结论并不一致。这些研究大多集中在时钟的数量问题，但涉及时间加工的记忆机制的共性往往被忽视。本实验旨在解决一个简单的问题：来自不同模态的标记时间间隔的信号是否共享相同的时钟和/或相同的存储器资源？为此，进行了一个间隔再现任务，涉及两个感官信号的并行定时，无论是在相同的方式或在不同的方式。记忆成分的测试是通过操纵延迟分离的目标间隔的呈现和再现的时刻，其中之一开始。结果表明，只有视觉标记的时间间隔时，有更多的变化，这种影响加剧了较长的保留延迟。最后，当只有一个间期要处理时，用从两种模态传递的信号对间期进行编码有助于减少方差。综上所述，这些结果表明，假设存在感觉特异性时钟组件和记忆机制是可行的。
A challenge for researchers in the time-perception field is to determine whether temporal processing is governed by a central mechanism or by multiple mechanisms working in concert. Behavioral studies of parallel timing offer interesting insights into the question, although the conclusions fail to converge. Most of these studies focus on the number-of-clocks issue, but the commonality of memory mechanisms involved in time processing is often neglected. The present experiment aims to address a straightforward question: do signals from different modalities marking time intervals share the same clock and/or the same memory resources? To this end, an interval reproduction task involving the parallel timing of two sensory signals presented either in the same modality or in different modalities was conducted. The memory component was tested by manipulating the delay separating the presentation of the target intervals and the moment when the reproduction of one of these began. Results show that there is more variance when only visually marked intervals are presented, and this effect is exacerbated with longer retention delays. Finally, when there is only one interval to process, encoding the interval with signals delivered from two modalities helps to reduce variance. Taken together, these results suggest that the hypothesis stating that there are sensory-specific clock components and memory mechanisms is viable.