To understand the effects of an apical ground contact on auditory nerve fiber (ANF) stimulation, particularly focusing on lower frequency encoding ANFs, and its impact on hearing outcomes in cochlear implants.
Key Findings:
Placement of an apical ground contact was clinically feasible.
Apical ground contact resulted in lowered pitch perception and improved speech recognition compared to monopolar stimulation, particularly in patients with profound deafness.
Current steering towards the apex was enhanced with apical ground contacts, indicating potential for improved stimulation.
Interpretation:
The use of apical ground contacts may improve stimulation of lower frequency encoding ANFs, potentially leading to better hearing outcomes for patients with profound deafness, warranting further clinical exploration.
Limitations:
Study involved a small cohort of only 3 patients, limiting generalizability.
Retrospective design limits the ability to establish causality and may introduce biases.
Conclusion:
Apical ground contacts present a promising approach to enhance cochlear implant performance by improving access to apical ANFs, warranting further investigation to validate these findings.
