제목

Aging and Spectro-Temporal Integration of Speech

저자

John H. Grose, Heather L. Porter, Emily Buss

발행기관

Sage Publications

발행일

October 14, 2016

키워드

aging, speech perception, auditory integration,

spectro-temporal processing

abstract

The purpose of this study was to determine the effects of age on the spectro-temporal integration of speech. The hypothesis was that the integration of speech fragments distributed over frequency, time, and ear of presentation is reduced in older listeners-even for those with good audiometric hearing. Younger, middle-aged, and older listeners (10 per group) with good audiometric hearing participated. They were each tested under seven conditions that encompassed combinations of spectral, temporal, and binaural integration. Sentences were filtered into two bands centered at 500 Hz and 2500 Hz, with criterion bandwidth tailored for each participant. In some conditions, the speech bands were individually square wave interrupted at a rate of 10 Hz. Configurations of uninterrupted, synchronously interrupted, and asynchronously interrupted frequency bands were constructed that constituted speech fragments distributed across frequency, time, and ear of presentation. The over-arching finding was that, for most configurations, performance was not differentially affected by listener age. Although speech intelligibility varied across condition, there was no evidence of performance deficits in older listeners in any condition. This study indicates that age, per se, does not necessarily undermine the ability to integrate fragments of speech dispersed across frequency and time.

주요내용

이 연구의 목적은 말하기(speech)의 spectro-temporal 통합의 연령효과를 결정하는 것임. 이 연구에 따르면 연령은 소리의 진동수와 시간에 걸쳐 분산된 말하기의 요소를 통합할 능력을 결정짓지 않는다고 함.

DOI

10.1177/2331216516670388

Link

http://journals.sagepub.com/doi/full/10.1177/2331216516670388