INFORMATION IN AUDITORY PATTERNS

描述：（改编自申请人的摘要）：我们卓越的能力， 声音中的信息处理每天都在展示， 我们遇到的声音信号的连续变化模式。的 这项研究的目的是为了更好地了解这种能力， 正常听力的成年人通过控制测量他们的能力， 并区分由音调组成的声学模式的变化。有 我们方法的三个关键要素。首先，所有努力都由一个单一的 理论框架，其中模式中的信息被精确地 意义和听众的表现是相对于一个共同的表现来评估的 标准第二，听众利用（权重）的程度不同， 信息来源是根据试验数据分析确定的。 第三，关于拟议实验结果的具体假设如下： 基于由耳蜗执行的已知信号变换来生成，以及 决策模型，它对过去许多决策的结果做出了准确的预测， 研究[R.A. Lutfi，J. Acoust. Soc. Am，748-758（1993）]。这三个要素 旨在实现五个具体目标。目标1-3是了解如何 模式分量沿着一个声学维度的变化 检测另一个中的变化，图案成分联合收割机如何组合以掩盖 单音调，以及音调检测如何受到 模式组件。目标4和目标5评估听者的察觉能力 模式分量之间的协变，并检测音调的合法协变 在识别真实的谐振资源中的局部。拟议 这些研究将进一步加深我们对日常生活中自然冗余的理解， 声音在嘈杂背景中的检测，以及听众如何处理不变量 定义语音和其他特性的频谱分量之间的关系 有意义的声音NIDCD的使命的重要性在于， 400万正常听力成年人的结果将使我们能够更好地评估真实的或 假定幼儿听觉信息处理缺陷， 老年人和听力损失的人。

DESCRIPTION: (Adapted from applicant's abstract): Our remarkable capacity to process information in sound is demonstrated everyday as we make sense of the continuous pattern of variation in the acoustic signals we encounter. The purpose of the proposed research is to better understand this ability in normal-hearing adults through controlled measured of their ability to detect and discriminate variation in acoustic patterns made up of tones. There are three keys elements of our approach. First, all efforts are linked by a single theoretical frame work where the information in the patterns is given precise meaning and listener performance is evaluated relative t a common performance standard. Second, the extent to which listeners make use of (weight) different sources of information is determined from trial-by trial analyses of the data. Third, specific hypotheses regarding the outcome of proposed experiments are generated based on known signal transformations performed by the cochlea and decision model that has make accurate prediction for the results of many past studies [R.A. Lutfi, J. Acoust. Soc. Am, 748-758 (1993)]. These three elements are combined to achieve five specific aims. Aims 1-3 are to understand how variation in pattern components along one acoustic dimension interferes with detection of a change in another, how pattern components combine to mask a single tone, and how tone detection is influenced by covariation among of pattern components. Aim 4 and 5 to assess the listener's ability to detect convariation among pattern components, and detect lawful covariation of tone partials in the identification of a real resonant resource. The proposed studies will further our understanding of how natural redundancies in everyday sounds aid detection in noisy backgrounds, and how listeners process invariant relations among spectral components that define properties of speech and other meaningful sounds. The significance of the mission of the NIDCD us that the results for4m normal-hearing adults will allow us to better evaluate real or presumed auditory information processing deficits of young children, the elderly, and individuals with hearing loss.