ENVELOPE SYNCHRONY PERCEPTION

这项研究的目的是更好地了解 对复杂听觉刺激的感知。现在的目的是 研究计划是研究时间同步的可检测性 用于宽带刺激。我们的目标是确定 协调同步检测的机制(S)，并应用于 对自然产生的声音的感知的信息 作为演讲和音乐。实验范式要求 听众在同时呈现的频段之间进行区分 具有同步信封或信封的噪波 不同步的。三种实验性的操作允许 歧视机制轨迹的确定(S)。 (1)噪声掩蔽。精心挑选的面具可以防止 监听器从以下位置提取有关同步的信息 包含实验数据的频率区域以外的其他频率区域 乐队。(2)双目共时知觉。献上乐队 将噪音传递给不同的耳朵将防止听众依赖于 有关同步的信息的外围交互。 总之，掩蔽和二分实验将表明 同步检测是否取决于 从独立的关键频段提取的信息，而不是 从单个关键频段提取的信息。(3)。二分法 蒙面。将不同的面具呈现给不同的 耳朵将指示负责的机构的轨迹 相对于双耳听觉系统的同步检测。 检查包络同步的检测提供了一个 有机会检查外周听觉过程和更多 全球中枢听觉过程。基本信息 关于由此产生的时间听觉过程 检查计划可为诊断和治疗提供依据。 对于听力障碍来说。

The objective of this research is to better understand the perception of complex auditory stimuli. The aim of the present research plan is to study the detectability of temporal synchrony for broad-band stimuli. The goal is to determine the locus of the mechanism(s) that mediate synchrony detection, and to apply that information to the perception of naturally occurring sounds such as speech and music. The experimental paradigm requires that listeners discriminate between simultaneously presented bands of noise that have envelopes that are either synchronous or asynchronous. Three experimental manipulations allow the determination of the locus of the discrimination mechanism(s). (1) Noise Masking. Judiciously chosen maskers will prevent listeners from extracting information about synchrony from frequency regions other than those containing the experimental bands. (2) Dichotic Synchrony Perception. Presenting the bands of noise to different ears will prevent listeners from relying on peripheral interactions for information concerning synchrony. Together, the masking and dichotic experiments will indicate whether synchrony detection depends on the comparison of information extracted from independent critical bands rather than information extracted from a single critical band. (3). Dichotic Masking. The effect of presenting different maskers to different ears will indicate the locus of the mechanism responsible for synchrony detection relative to the binaural auditory system. Examining the detection of envelope synchrony affords an opportunity to examine both peripheral auditory processes and more global central auditory processes. The basic information concerning temporal auditory processes that will result from this plan of study may provide a basis for the diagnosis and treatment for auditory impairment.