Preperceptual and perceptual organization of sound

声音的前知觉和知觉组织

• 批准号: 7292410
• 负责人: ELYSE S SUSSMAN
• 金额: $ 1.26万
• 依托单位: ALBERT EINSTEIN COLLEGE OF MEDICINE
• 依托单位国家: 美国
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-12-15 至 2007-11-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7292410
• 关键词: Europe; attention; auditory stimulus; behavioral /social science research tag; clinical research; cooperative study; cues; evoked potentials; human subject; neural information processing; sound perception; stimulus interval

DESCRIPTION (provided by applicant) This research will be done primarily in Hungary as an extension of NIH Grant #R01 DC 04263. The goal of the proposed research is to characterize the processes leading to the perception of distinct sound sources. Our previous results (see Preliminary Results) established that a large part of auditory organization occurs preperceptually. The aim of the proposed research is to determine whether the perceived segregation of sources is the result of a single process or whether auditory organization goes through several distinct phases before reaching perception. Finding a preperceptual organization that differs from the perceived organization would support the notion of a multi-stage process. To reach this goal we will use the high temporal resolution of event-related potentials (ERPs) in conjunction with behavioral methods to compare the outcome of stimulus-driven auditory processes with the perception resulting from attentive processing of the same sounds, across various experimental conditions. This will allow us to evaluate the processing stages of auditory organization and determine how much of the perceptual organization is strictly stimulus driven and how much can he altered by attentional processes. The FIRCA proposal will expand on Specific Aim 2 of the parent grant ("the interplay between attention and stimulus-driven processes in perception"). Three experiments are proposed to address this aim. Experiment 1 will determine to what extent perceptual sound organization corresponds to an assessable preperceptual organization. Experiment 2 will investigate what stage of auditory processing are multiple cues (differences between two sets of sounds in two or more auditory features) summed in segregating sound sources. Experiment 3 will test whether alternative sound organizations (i.e., the integrated and the segregated organizations) of the same two sets of sounds can exist in parallel at an assessable preperceptual processing stage.

描述（由申请人提供） 这项研究将主要在匈牙利进行，作为 NIH Grant #R01 DC 04263 的延伸。拟议研究的目标是描述导致不同声源感知的过程。我们之前的结果（参见初步结果）表明，听觉组织的很大一部分是在知觉前发生的。拟议研究的目的是确定感知到的源隔离是否是单一过程的结果，或者听觉组织在达到感知之前是否经历了几个不同的阶段。找到一个与感知组织不同的前感知组织将支持多阶段过程的概念。为了实现这一目标，我们将使用事件相关电位（ERP）的高时间分辨率与行为方法相结合，将刺激驱动的听觉过程的结果与在各种实验条件下对相同声音进行细心处理所产生的感知进行比较。这将使我们能够评估听觉组织的处理阶段，并确定感知组织有多少是严格刺激驱动的，以及注意力过程可以改变多少。 FIRCA 提案将扩展母基金的具体目标 2（“注意力与感知中刺激驱动过程之间的相互作用”）。提出了三个实验来实现这一目标。实验 1 将确定知觉健全组织在多大程度上对应于可评估的前知觉组织。实验 2 将研究听觉处理的哪个阶段是在分离声源时汇总的多个线索（两个或更多听觉特征中两组声音之间的差异）。实验3将测试相同两组声音的替代声音组织（即整合和分离组织）是否可以在可评估的前知觉处理阶段并行存在。