Efficacy of auditory training in elderly subjects

Area of Science:

• Gerontology
• Neuroscience
• Audiology

Background:

• Auditory training (AT) is a key component of auditory rehabilitation for the elderly.
• Distinguishing AT benefits from placebo and test-retest effects is crucial for evaluating efficacy.
• Auditory processing disorder (APD) affects speech perception in older adults.

Purpose of the Study:

• To investigate the efficacy of short-term acoustically controlled auditory training (ACAT) in elderly individuals with APD.
• To differentiate training-specific improvements from placebo and test-retest effects using behavioral and electrophysiological measures.
• To assess the impact of ACAT on auditory skills and P300 responses.

Main Methods:

• 16 elderly individuals with APD were evaluated using behavioral tests and P300 evoked potentials (tone burst and speech sounds).
• Participants were divided into active (placebo training) and passive (no intervention) control groups for 12 weeks.
• Following control periods, all participants underwent ACAT for 12 weeks (8 sessions), with subsequent evaluations.

Main Results:

• No significant differences were found between initial and post-control evaluations (E1-E2) in behavioral tests or P300, indicating no placebo or test-retest effects.
• Significant improvements in all auditory skills were observed via behavioral methods after ACAT (E2-E3).
• No significant changes in P300 responses were detected across conditions or stimuli following ACAT.

Conclusions:

• Short-term ACAT is an effective method for hearing rehabilitation in the elderly.
• ACAT significantly enhances behavioral performance across all auditory skills in older adults with APD.
• While ACAT improves behavioral auditory function, it did not significantly alter P300 measures in this study.