Preperceptual and perceptual organization of sound

声音的前知觉和知觉组织

• 批准号: 6690738
• 负责人: ELYSE S SUSSMAN
• 金额: $ 4.97万
• 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 2005-11-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6690738
• 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） 这项研究将主要是在匈牙利进行的，作为NIH赠款＃R01 DC 04263的扩展。拟议的研究的目的是表征导致对不同声音源的感知的过程。我们先前的结果（请参阅初步结果）确定，听觉组织的很大一部分是在概念上发生的。拟议研究的目的是确定来源的感知分离是单个过程的结果，还是听觉组织在达到感知之前是否经历了几个不同的阶段。寻找一个与感知组织不同的前敏化组织将支持多阶段过程的概念。为了实现这一目标，我们将使用与行为方法结合事件相关电位（ERP）的高时间分辨率，以比较刺激驱动的听觉过程的结果与各种实验条件的相同声音的专家处理所产生的感知。这将使我们能够评估听觉组织的处理阶段，并确定严格刺激驱动的感知组织的数量，以及注意力过程可以改变多少。 FIRCA提案将扩大父母赠款的特定目的2（“感知中的注意力和刺激驱动过程之间的相互作用”）。提出了三个实验来解决这一目标。实验1将确定知觉声音组织在多大程度上对应于可评估的前观察组织。实验2将在分离声源中总结出多个提示的听觉处理阶段是多个提示（两个或多个听觉功能中的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（即集成的组织和隔离组织）是否可以在可评估的治疗前处理阶段并行存在。