Neural degeneration does not alter CI pulse polarity sensitivity over time
Evidence
If neural degeneration had an effect on polarity sensitivity, we would expect the polarity effect to increase over time and to reach positive values when fibers are degenerated. This does not seem to be the case as the level difference between polarities rather tends to decrease right after deafening for several subjects and then to remain roughly constant. — Dijk, Pim van, Physiology, Psychoacoustics and…, 2309
Categorization
Category: Contrarian or Surprising Claims
Related
- Neural degeneration does not increase polarity sensitivity following deafening (similarity 0.92)
- Spiral ganglion degeneration does not progressively increase polarity sensitivity (similarity 0.89)
- Species differences in final nerve geometry may drive the polarity reversal (similarity 0.85)
- Nerve degeneration may flip polarity sensitivity toward anodic dominance in implant users. (similarity 0.84)
- Pulse polarity differences translate to roughly 30 dB of acoustic hearing range (similarity 0.84)
- Neural degeneration alone does not explain polarity sensitivity differences in cochlear implants (similarity 0.84)
- Asymmetric pulse shapes amplify polarity sensitivity beyond symmetric pulses (similarity 0.84)
- Nerve degeneration or central blocking may explain anodic pulse dominance (similarity 0.84)
- Neural degeneration over time does not flip cathodic-anodic stimulation efficiency in deafened guinea pigs (similarity 0.83)
- Degenerated nerve processes make anodic stimulation more effective (similarity 0.81)
- Neural degeneration does not drive the anodic sensitivity seen in humans (similarity 0.81)
- Pulse polarity effects on neural response differ significantly across pulse shapes (similarity 0.81)
- Neural degeneration cannot explain why anodic stimulation suits humans but cathodic suits animals (similarity 0.80)
- Auditory nerve degeneration measurably shifts electrically evoked firing patterns (similarity 0.80)
- At suprathreshold levels louder electrical pulses can sometimes evoke smaller neural responses (similarity 0.79)