Effects of aging on time-gated isolated word-recognition performance

Area of Science:

• Audiology
• Gerontology
• Speech Perception

Background:

• Assessing real-time auditory processing in older adults is crucial for understanding age-related hearing changes.
• Traditional word-recognition tests may not fully capture the temporal dynamics of speech perception in older listeners.

Purpose of the Study:

• To investigate real-time monosyllabic word-recognition performance in older adults.
• To evaluate the feasibility of using time-gated NU-6 word-recognition test materials for assessing older listeners.

Main Methods:

• Utilized methods from a previous study to obtain time-gated performance measures.
• Collected data from 37 older listeners (mean age 69) and compared it with 20 young adults (mean age 22).
• Evaluated listener confidence, accuracy by gate, isolation point, confidence at isolation, and total acceptance point.

Main Results:

• Older listeners demonstrated a slower pace in key real-time speech understanding events.
• Significant differences were observed in temporal processing between older and younger listeners.
• Listener confidence and accuracy varied across different time gates.

Conclusions:

• The time-gating method shows significant potential for future research in elderly hearing assessment.
• Real-time auditory processing speed is a key factor differentiating older and younger listeners.
• This approach offers a novel way to assess age-related changes in speech recognition.