Pulse shape strongly determines cochlear implant stimulation current efficiency
Evidence
Finally, the difference in efficiency between the various pulse shapes was consistent with results obtained in previous animal and human experiments (Miller et al. 2001 ; Carlyon et al. 2013 ), showing that, to elicit responses of equal amplitude, pseudomonophasic pulses with a gap between the two phases require a lower current level than symmetric pulses while triphasic pulses require a higher current level. — Dijk, Pim van, Physiology, Psychoacoustics and…, 2325
Categorization
Category: Factual Claims
Related
- Pulse-shape efficiency ordering holds across animal and human studies (similarity 0.90)
- Asymmetry in cochlear implant pulse shapes biases one polarity of stimulation to dominate. (similarity 0.87)
- Pulse polarity effects on neural response differ significantly across pulse shapes (similarity 0.87)
- Cathodic pulse superiority holds across all four tested pulse shapes (similarity 0.86)
- Pseudomonophasic pulses with a gap need less current than symmetric pulses (similarity 0.86)
- Asymmetric pulse shapes with long delayed phases are more electrically efficient than symmetric pulses (similarity 0.86)
- Cochlear implant testing used four pulse shapes favoring either cathodic or anodic stimulation (similarity 0.85)
- Pulse shapes require measurably different current levels to evoke equal neural responses (similarity 0.84)
- Cathodic pulses produce larger cochlear implant responses than anodic pulses across pulse shapes (similarity 0.84)
- Both anodic and cathodic stimulus phases can elicit auditory nerve responses (similarity 0.83)
- Cathodic pulses evoke larger inferior colliculus responses than anodic pulses (similarity 0.82)
- Some cathodic responses decrease as current rises, growing non-monotonically (similarity 0.82)
- Cochlear implant stimuli use charge-balanced biphasic pulses at around 20 pulses per second. (similarity 0.81)
- Anodic current outperforms cathodic current in human cochlear implant users at suprathreshold levels (similarity 0.80)
- Charge-balanced asymmetric waveforms reduce the current needed to elicit hearing in cochlear implant users. (similarity 0.80)