Related Experiment Video
Updated: Jan 12, 2026

Neuro-rehabilitation Approach for Sudden Sensorineural Hearing Loss
Published on: January 25, 2016
Asymmetric Hearing Across Varying Hearing Levels and Its Impact on Rehabilitation in Severe-to-Profound Hearing Loss
Christian Löfvenberg1,2, Helge Lyckberg2, Lars Lundman2
1Faculty of Medicine and Health, Medicine and Health, Örebro University, Örebro.
Objective:
Comparison of asymmetric hearing in patients with severe-to-profound hearing loss (STPHL) and those with less pronounced or no hearing loss. The influence of asymmetric hearing on cochlear implantation (CI) was also analyzed.
Study Design:
Retrospective cohort.
Setting:
Hearing clinics across all regions in Sweden.
Patients:
This study included 898,421 adult patients identified using the audiometric software Auditbase and 4286 adult patients from the Swedish National Quality Register for STPHL.
Main Outcome Measures:
Proportion of patients with asymmetric hearing according to 11 different asymmetry criteria. Adjusted odds ratios for the presence of cochlear implants, adjusted for age, sex, and the highest level of education.
Results:
Across the different criteria, asymmetric hearing ranged from 20% to 59% in STPHL patients and 14% to 46% in those with better hearing. Adjusted odds ratios showed that cochlear implants were more common in patients with >15 dB asymmetry in the pure tone average at the base and mid-range frequencies.
Conclusion:
This study of national audiogram data from Sweden showed that asymmetric hearing was more common in patients with STPHL. The higher proportion of CI in patients with asymmetric hearing indicates that asymmetric hearing is a complicating factor that must be considered in the rehabilitation of STPHL.
More Related Videos
11:39Assessment of Audio-Tactile Sensory Substitution Training in Participants with Profound Deafness Using the Event-Related Potential Technique
Published on: September 7, 2022
06:04Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
Published on: March 24, 2023
Related Concept Videos
Hearing
The Cochlea
Auditory Perception
Perception of Sound Waves
The pitch of a sound depends on the frequency and the pressure amplitude of the source. Two sounds of the same...
Auditory Pathway
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking...
Autism Spectrum Disorder
These core symptoms manifest differently among individuals, ranging from mild to severe. The disorder's complexity extends beyond its clinical presentation, encompassing a diverse range of biological, cognitive, and sociocultural influences.