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Comments on "Speech Understanding and Aging".

J Jerger¹, B Stach, J Pruitt

¹Baylor College of Medicine, Methodist Hospital, Houston, Texas 77030.

The Journal of the Acoustical Society of America

|March 1, 1989

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Age-related hearing decline is not solely due to cognitive impairment. This study found normal auditory function in many dementia patients, challenging the cognitive decline hypothesis for elderly speech understanding deficits.

Area of Science:

Audiology
Neuroscience
Gerontology

Background:

The CHABA Working Group hypothesized that age-related speech understanding decline stems from cognitive factors.
Previous research suggested a link between cognitive function and auditory processing in the elderly.

Purpose of the Study:

To test the hypothesis that cognitive decline explains age-related speech understanding deficits.
To examine speech audiometric findings in patients with dementia.

Main Methods:

Speech audiometric tests were administered to patients diagnosed with dementia.
Cognitive functions including memory, attention, and executive functions were assessed.

Main Results:

12 out of 23 dementia patients exhibited normal central auditory function.

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Despite significant cognitive deficits, some patients maintained auditory processing abilities.

Conclusions:

The findings argue against a simple causal relationship between general cognitive decline and age-related speech understanding deficits.
Auditory processing in the elderly may be more resilient to cognitive decline than previously hypothesized.