Rastatter M, Watson M, Strauss-Simmons D
College of Health and Human Services, Bowling Green State University, Ohio 43403.
Percept Mot Skills. 1989 Apr;68(2):367-72. doi: 10.2466/pms.1989.68.2.367.
This study measured the ability of 16 aged listeners, normal for their age (age range, 63 to 84 yr.) to discriminate phonemic contrasts in sentential stimuli (Subtest 13 of the Carrow-Auditory Visual Abilities Test) presented at 50% time-compression rate. A series of linear regression analyses were performed in which each independent variable was regressed against the continuous variable of age. Over-all performance on the time-compressed task significantly decreased as a function of age. Also discrimination of place of articulation and mid- to high-frequency contrasts was significantly and negatively related to age. In general, such findings suggest that the course of aging continuously imposes degrading effects on speech-processing that are related to discrimination of place feature contrasts.
本研究测量了16名年龄正常（年龄范围为63至84岁）的老年听众辨别以50%时间压缩率呈现的句子刺激（卡罗听觉视觉能力测试的子测试13）中语音对比的能力。进行了一系列线性回归分析，其中每个自变量都与年龄这一连续变量进行回归。时间压缩任务的总体表现随着年龄的增长而显著下降。此外，发音部位的辨别以及中高频对比与年龄显著负相关。总体而言，这些发现表明衰老过程持续对语音处理施加与辨别部位特征对比相关的退化影响。
