Auditory temporal processing

听觉时间处理

• 批准号: 93029-2009
• 负责人: Phillips, Dennis
• 金额: $ 2.62万
• 依托单位: Dalhousie University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2011
• 资助国家: 加拿大
• 起止时间: 2011-01-01 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=475231
• 关键词: Auditory; temporal; processing

Sounds, by their very nature, are events that take time to unfold. Much of hearing science has been devoted to the processes involved in detecting sounds, discriminating and identifying them, or locating them in space. The proposed research specifically targets temporal processes in hearing. Does the perceptual processing of one sound in some way contaminate the perceptual processing of temporally adjacent sounds? If so, in what ways? How truthful to the actual state of the physical stimulus is the unfolding of our private, subjective experience of the auditory world? How do we appropriately measure the resolution with which our auditory experience unfolds? The proposed research tackles these questions directly. One line of the research is on selective adaptation in hearing. It explores how experience of a sound at one point along a dimension (e.g., location) shifts sensitivity along that dimension for the next sound that occurs. A second line of research is on the saltation illusion. It explores how information about one sound can affect the processing of information about a temporally proximate sound, including the case of the perception of one sound being affected by the occurrence of a later sound. Our third line of research seeks an empirical answer to a methodological question. Currently, at least two psychophysical methods are being employed to measure what are called "auditory gap detection thresholds." These thresholds are measures of the shortest detectable period of silence between two sounds, and are thus a measure of auditory temporal acuity. But do the two methods actually measure the same parameter of perceptual performance? We suspect that they don't, but that needs to be proved experimentally. Together, these lines of enquiry build on the breakthroughs made in the preceding two grant cycles, and offer new insights into the temporal properties of processing within the human auditory system.

声音，就其本质而言，是需要时间来展开的事件。 听觉科学的大部分内容都致力于检测声音、辨别和识别声音或在空间中定位声音的过程。 拟议的研究专门针对听觉的时间过程。 对一个声音的感知处理是否以某种方式污染了对时间上相邻的声音的感知处理？ 如果是，在哪些方面？ 我们对听觉世界的私人的、主观的体验的展开，对物理刺激的实际状态有多真实？ 我们如何恰当地测量我们的听觉体验展开的分辨率？ 拟议的研究直接解决这些问题。 研究的一个方向是听觉的选择性适应。 它探讨了声音在沿着一个维度的一个点上的体验（例如，位置）沿着该维度沿着移动灵敏度以用于下一个出现的声音。 第二个研究方向是跳跃错觉。 它探讨了一种声音的信息如何影响对时间上接近的声音的信息的处理，包括一种声音的感知受到后来声音的发生的影响的情况。 我们的第三条研究路线寻求一个方法论问题的实证答案。 目前，至少有两种心理物理学方法被用来测量所谓的“听觉间隙检测阈值”。“这些阈值是两个声音之间最短可检测的沉默时间的量度，因此是听觉时间敏锐度的量度。 但是这两种方法实际上测量的是感知性能的相同参数吗？ 我们怀疑它们不会，但这需要实验证明。 总之，这些调查线建立在前两个赠款周期取得的突破，并提供了新的见解，在人类听觉系统内处理的时间特性。