WITHIN AND BETWEEN CHANNEL REPRESENTATIONS

渠道表示内部和之间

• 批准号: 6030185
• 负责人: VIRGINIA M RICHARDS
• 金额: $ 27.03万
• 依托单位: UNIVERSITY OF PENNSYLVANIA
• 依托单位国家: 美国
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-01-01 至 2003-06-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6030185
• 关键词: auditory discrimination; auditory stimulus; auditory threshold; behavioral /social science research tag; human subject; loudness; mathematical model; model design /development; neural information processing; noise; psychoacoustics; sensory signal detection; sound frequency

DESCRIPTION: The objective of this research is to better understand the perception of complex acoustical stimuli. The auditory system has the property that incoming sounds are decomposed into different frequency channels. In contrast, our percepts are unified, depending on the integration of information across both frequency and time. The long- term objectives of the proposed research is to understand the integration of information across frequency. Of particular interest is the integration of level and temporal information, two features of broadband sounds encoded in frequency channels. This objective is addressed by comparing the result of psychophysical experiments and optimal statistical models of processing applied at the level of frequency channels. B jointly considering human performance predicted by optimal models, estimates of frequency selectivity for level and temporal tasks may be obtained. Then, the resulting models may be tested using increasingly complex tasks, tasks in which both level and temporal features of broadband stimuli are varied. To the degree that the sensitivity to changes in level and temporal features of broadband sounds are successfully modeled, comparisons with models derived for hearing impaired individuals can follow.

描述：本研究的目的是更好地了解 对复杂声音刺激的感知。 听觉系统有 传入的声音被分解成不同频率的特性 渠道 相比之下，我们的感知是统一的，这取决于 频率和时间上的信息整合。 很长的- 拟议研究的长期目标是了解 频率上的信息整合。 特别感兴趣的是 水平和时间信息的集成， 在频道中编码的宽带声音。 这一目标 通过比较心理物理实验的结果和 最佳统计模型的处理应用在一级 频道频道 B共同考虑预测的人的性能 通过最优模型，对电平和 可以获得时间任务。 然后，所得到的模型可以是 测试使用越来越复杂的任务，任务中的水平和 宽带刺激的时间特征是多种多样的。 的程度 对宽带水平和时间特征变化的敏感性 声音被成功地建模，与模型的比较， 听力受损的人可以跟随。