Hearing loss and executive functions - results from a population-based cohort study

Area of Science:

• Audiology
• Cognitive Neuroscience
• Public Health

Background:

• Hearing loss is associated with cognitive decline.
• The specific relationship between hearing impairment and executive functions, particularly planning ability, is not well understood.
• This study investigates the link between hearing thresholds, speech-in-noise perception, and planning skills.

Purpose of the Study:

• To examine the association between pure-tone audiometry results and planning ability.
• To investigate the relationship between hearing impairment and speech-in-noise perception.
• To explore how planning ability influences the likelihood of hearing impairment and auditory processing.

Main Methods:

• Analysis of data from the Gutenberg Health Study (GHS), a large population-based cohort.
• Inclusion of 4,458 participants with complete pure-tone audiometry and planning ability data.
• Assessment of hearing using WHO criteria, speech-in-noise perception via the Oldenburg Satztest, and planning ability using the Tower of London test.

Main Results:

• Significant negative association found between hearing loss (≥20 dB) and planning ability total score (β = -0.346, p < 0.01).
• Higher planning ability was associated with a reduced likelihood of hearing impairment (OR = 0.97, p = 0.006).
• Improved planning ability correlated with better speech-in-noise perception (lower OLSA SRT, β = -0.035, p = 0.001).

Conclusions:

• Hearing loss is demonstrably linked to diminished planning capabilities.
• Enhanced planning ability appears to be protective against hearing impairment and aids in speech-in-noise understanding.
• Findings support theories that hearing loss increases cognitive load on attention and working memory, necessitating further longitudinal research.