Related Experiment Video
Updated: Aug 7, 2026
09:06
Cochlear Implant Surgery and Electrically-evoked Auditory Brainstem Response Recordings in C57BL/6 Mice
Published on: January 9, 2019
Phonological representation and speech understanding with cochlear implants in deafened adults
B Lyxell1, J Andersson, U Andersson
1Department of Education and Psychology, Linköping University.
Scandinavian Journal of Psychology
|November 4, 1998
Summary
Deafened adults with cochlear implants (CIs) performed similarly to normal-hearing individuals on most cognitive tasks. However, CI users struggled with tasks requiring phonological processing, impacting speech understanding, especially for those with pre-existing phonological deficits.
Area of Science:
- Neuroscience
- Audiology
- Cognitive Psychology
Background:
- Deafened adults receiving cochlear implants (CIs) face challenges in speech understanding.
- Cognitive factors are increasingly recognized as crucial for CI success.
- The role of pre-operative phonological abilities in post-implant speech perception requires further investigation.
Purpose of the Study:
- To examine cognitive performance in deafened adult CI candidates.
- To relate cognitive abilities to speech understanding outcomes after 12 months of CI use.
- To investigate the impact of phonological representation on speech perception in CI users.
Main Methods:
- Cognitive assessments were administered to 15 deafened adult CI candidates.
- Performance was compared to normal-hearing controls.
- Speech understanding levels were evaluated after 12 months of CI experience.
Main Results:
- CI candidates performed comparably to controls on most cognitive tasks.
- A significant deficit was observed in tasks demanding phonological representation of sound.
- Post-implant speech understanding correlated with pre-operative phonological abilities.
Conclusions:
- Absence of auditory stimulation may lead to deterioration of phonological representations.
- Pre-operative phonological skills are critical predictors of speech understanding success with cochlear implants.
- Cognitive factors, particularly phonological processing, play a significant role in CI outcomes.
Related Concept Videos
01:13The Cochlea
The cochlea is a coiled structure in the inner ear that contains hair cells—the sensory receptors of the auditory system. Sound waves are transmitted to the cochlea by small bones attached to the eardrum called the ossicles, which vibrate the oval window that leads to the inner ear. This causes fluid in the chambers of the cochlea to move, vibrating the basilar membrane.
01:21Perceiving Loudness, Pitch, and Location
The human brain perceives pitch through two primary mechanisms reflected in place theory and frequency theory. Each mechanism describes how sound waves are interpreted as specific pitches by the brain, offering insights into the intricate processes of auditory perception.
Place theory, or place coding, suggests that different pitches are heard because various sound waves activate specific locations along the cochlea's basilar membrane. The brain determines the pitch of a sound by identifying...
Place theory, or place coding, suggests that different pitches are heard because various sound waves activate specific locations along the cochlea's basilar membrane. The brain determines the pitch of a sound by identifying...