Aging and temporal processing: A multi-modality study

衰老和时间处理：多模态研究

• 批准号: 7066517
• 负责人: LARRY E HUMES
• 金额: $ 45.51万
• 依托单位: TRUSTEES OF INDIANA UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-05-17 至 2010-04-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7066517
• 关键词: age difference; aging; auditory stimulus; behavior test; behavioral /social science research tag; clinical research; cognition; computer human interaction; hearing tests; human subject; mathematical model; memory; neuropsychological tests; perceptual maskings; psychological models; psychomotor reaction time; psychophysics; sensory discrimination; sensory disorders; sensory signal detection; sound perception; statistics /biometry; temporal lobe /cortex; touch; vision tests; visual perception; visual stimulus

DESCRIPTION (provided by applicant): It has been estimated that at least 10-15% of the elderly American population, or 2-3 million individuals, experience impairments in more than one sensory modality, including hearing, sight and touch. The proposed project assesses the performance of a large group of young and elderly adults on a battery of tests that measure temporal-processing abilities in the auditory, visual and tactual senses. The primary aims of the proposed project are: (1) to determine whether temporal processing of sensory input by adults is affected by advancing age in either the auditory, visual or tactile modalities; (2) to establish whether correlations exist across sensor modalities for similar measures of temporal processing obtained from the same set of young and elderl, participants; and (3) to determine whether various measures of temporal processing within a particular modality are correlated, regardless of age. The first aim is addressed primarily through examination of differences in performance on auditory, visual and tactile measures of temporal processing between groups comprised of the same set of young and elderly individuals, as well as through correlations with age. Based on isolated experiments on temporal processing conducted previously within each sensory modality, it is anticipated that elderly subjects, as a group, will perform worse than young adults on most of these tasks and will likely do sc for each modality. Since a parallel set of temporal measures will be obtained across all three modalities however, the proposed project also will be able to address the aims identified above through correlational analyses. In addition, regarding the second aim, within a given age group, correlations in performance across modalities on a particular temporal-processing measure will provide strong evidence that such processing is amodal, likely sharing a common underlying central or cognitive process. In this way, use of young and elderly subjects in the proposed project will not only shed light on the nature of sensory impairments experienced b the elderly, but also on the nature of temporal processing mechanisms across modalities regardless of age. Structural equation modeling will be used to examine the correlations between measures and address the degree to which different modalities share a common temporal processing mechanism that is affected by age.

描述（由申请人提供）：据估计，至少有10-15％的美国老年人（或2-3万个人）以多种感官方式（包括听力，视力和触摸）遭受损害。拟议的项目评估了一大批年轻和老年人在一系列测试中的表现，以测量听觉，视觉和触觉感官的时间处理能力。拟议项目的主要目的是：（1）确定成年人对感觉输入的时间处理是否会受到听觉，视觉或触觉方式的年龄的影响； （2）确定在传感器方式之间是否存在相关性，以实现从同一组年轻和老年人（参与者）获得的时间处理的类似度量； （3）确定特定方式内的时间处理的各种度量是否相关，无论年龄如何。第一个目的主要是通过检查由相同年轻人和老年人组成的群体之间的听觉，视觉和触觉度量的表现，视觉和触觉度量的差异以及与年龄相关的相关性。基于对以前在每种感觉方式中进行的时间处理的孤立实验，可以预计，在大多数这些任务上，老年受试者的表现将比年轻人差，并且可能会对每种方式进行SC。由于将在所有三种方式中获得一套平行的时间措施，但是拟议的项目还将能够通过相关分析来解决上述目标。此外，关于第二个目标，在给定的年龄组中，在特定的时间处理措施上跨模式的性能相关性将提供有力的证据，表明这种处理是Amodal的，很可能具有共同的基本基础中心或认知过程。这样，在拟议项目中使用年轻和老年人的使用不仅会阐明遇到的感觉障碍的本质，而且还阐明了跨年龄的时间处理机制的性质。结构方程模型将用于检查度量与解决不同模式共享受年龄影响的常见时间处理机制的程度之间的相关性。