INFORMATION IN AUDITORY PATTERNS

描述：(改编自申请者摘要)：我们非凡的能力 声音中的处理信息每天都在演示，因为我们理解了 我们遇到的声音信号的连续变化模式。这个 拟议研究的目的是为了更好地了解这种能力 听力正常的成年人通过对照测量他们的探测能力 并辨别由音调组成的声学模式的变化。确实有 我们方法的三个关键要素。首先，所有的努力都由一个单一的 理论框架，其中模式中的信息被给予精确的 意义和监听者的性能是相对于普通性能进行评估的 标准的。第二，听众利用(权重)不同的程度 信息来源是从试验中确定的--通过对数据的试验分析。 第三，关于拟议实验结果的具体假设是 基于由耳蜗所执行的已知信号变换而生成 对许多过去的结果做出准确预测的决策模型 访问数/每百万人：Reach for[R.A.SoC。AM，748-758(1993)]。这三个要素 结合起来实现五个具体目标。目标1-3是了解如何 模式分量沿一个声学维度的变化干扰 检测另一个中的变化，图案组件如何组合以掩蔽 单音，以及音调检测如何受以下各项之间的协变影响 阵列零部件。目标4和5评估听者的侦测能力 模式分量之间的协变，并检测音调的合法协变 在识别一个真实的共振源中的分项。建议数 研究将进一步加深我们对日常生活中自然冗余的理解 声音有助于在嘈杂的背景中进行检测，以及听众如何处理不变量 定义语音和其他属性的频谱分量之间的关系 有意义的声音。NIDCD的使命对我们的意义在于 400万听力正常的成年人的结果将使我们能够更好地评估真实或 儿童听觉信息加工缺陷的推测 老年人，以及听力损失的个人。

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.