Pseudomonophasic pulses with a gap need less current than symmetric pulses
Evidence
The difference in level between SYM-C and the various asymmetric pulse shapes RPS-C, RPS-IPG-C and TRI-C when they all produced the same response amplitude was determined. The response amplitude at which the pulse shapes were compared was equal to 50 % of the maximum amplitude of SYM-C. Given there was no effect of duration of deafness on the magnitude of these effects, the data were averaged across sessions for each animal and analyzed in a one-way repeated measures ANOVA. The star symbols in Fig. 4d show the mean across animal subjects. The effect of pulse shape was highly significant (F(3,18) = 22.76, p < 0.001). RPS-IPG required 2.2 dB less current than SYM (p < 0.05) while TRI required 2.7 dB more. There was no significant difference between SYM and RPS. — Dijk, Pim van, Physiology, Psychoacoustics and…, 2272
Categorization
Category: Factual Claims
Related
- Asymmetric pulse shapes with long delayed phases are more electrically efficient than symmetric pulses (similarity 0.92)
- Pulse-shape efficiency ordering holds across animal and human studies (similarity 0.91)
- Asymmetric pulse shapes amplify polarity sensitivity beyond symmetric pulses (similarity 0.89)
- Pulse shapes require measurably different current levels to evoke equal neural responses (similarity 0.88)
- Pulse shape strongly determines cochlear implant stimulation current efficiency (similarity 0.86)
- Pulse polarity effects on neural response differ significantly across pulse shapes (similarity 0.83)
- At suprathreshold levels louder electrical pulses can sometimes evoke smaller neural responses (similarity 0.80)
- Asymmetry in cochlear implant pulse shapes biases one polarity of stimulation to dominate. (similarity 0.80)
- Cathodic pulse superiority holds across all four tested pulse shapes (similarity 0.79)
- Pulse polarity differences translate to roughly 30 dB of acoustic hearing range (similarity 0.78)
Broader Connections
- Asymmetric pulse shapes with long delayed phases are more electrically efficient than symmetric pulses
#corroborates(0.75) — Dijk, Pim van, Physiology, Psychoacoustics and…, 2319