Processing speed and timing in aging adults: psychoacoustics, speech perception, and comprehension

Area of Science:

• Neuroscience
• Cognitive Psychology
• Auditory Science

Background:

• Perceptual and cognitive processing show age-related differences.
• Hearing and vision are linked to cognitive variations, including intelligence.
• Understanding spoken language in noisy environments is challenging for older adults.

Purpose of the Study:

• To explore the relationship between age-related auditory temporal processing and cognitive slowing.
• To understand how older adults process spoken language in difficult listening conditions.
• To determine if auditory temporal processing differences contribute to cognitive performance variations in aging.

Main Methods:

• Experiments varied signal-to-noise ratios to equalize listening difficulty for different age groups.
• Simulations of auditory aging were conducted on younger listeners.
• Auditory temporal processing and cognitive performance were measured.

Main Results:

• Evidence suggests that auditory temporal processing differences play a role in age-related cognitive performance.
• Some observed cognitive differences in older adults may stem from auditory processing.
• Listening difficulty equalization revealed underlying auditory contributions.

Conclusions:

• Age-related auditory temporal processing deficits may underlie some cognitive performance declines in older adults.
• Cognitive performance during spoken language comprehension is influenced by auditory processing capabilities.
• Further research is needed to fully elucidate the perception-cognition link in aging.