Combining electric implant with residual acoustic hearing improves pitch perception

Evidence

We know that listeners with SNHL have disruptions to the place code, particularly in the form of reduced frequency selectivity. Consequently, to the extent that the place code is responsible for the pitch of sounds, disruptions to pitch perception are expected. Further, we can measure the amount of disruption to the place code in listeners with hearing loss, using our tools to measure frequency selectivity. Broadening of frequency selectivity would impact the ability of listeners with hearing loss to select resolved harmonic peaks, thereby impacting pitch perception. Psychophysical experiments also have demonstrated disruption to the temporal code in listeners with hearing loss (Hopkins & Moore, 2011), suggesting that hearing impairment may alter both the place and temporal codes for pitch. — Jennifer Lentz, Psychoacoustics- Perception of Normal…, 1326 (#expands, via linked claim)

The studies described here both illustrate the importance of pitch perception in our ability to separate a target sound from a background. Given that much of everyday communication occurs in complex environments with many competing signals, robust pitch perception mechanisms are important to facilitate effective communication. Deficits in pitch perception are likely to lead to deficits in the ability to understand speech in the presence of background noise, particularly when that background noise is also speech. As we discuss next, sensorineural hearing loss damages pitch perception and therefore contributes to difficulty communicating in complex environments. — Jennifer Lentz, Psychoacoustics- Perception of Normal…, 1324 (#expands, via linked claim)

Categorization

• XREF: connects to: Perceptual pitch ranking and direct electrical stimulation yield concordant electrode discrimination; Envelope-insensitive phonetic EEG indices may monitor cochlear-implant patients’ phonetic discrimination.; Electrical cochlear stimulation produces faster, larger neural responses than acoustic stimulation — Dijk, Pim van, Physiology, Psychoacoustics and…, 1451 (+6 more)

Related

• Hearing impairment disrupts both place and temporal pitch codes (similarity 0.85)
• Envelope-insensitive phonetic EEG indices may monitor cochlear-implant patients’ phonetic discrimination. (similarity 0.83)
• Individual hearing-impaired listeners compensate by relying on whichever pitch code remains intact (similarity 0.82)
• Sensorineural hearing loss damages pitch, harming speech-in-noise communication (similarity 0.82)
• Deactivating cochlear implant electrodes based on pitch ranking worsens spectral resolution without improving speech. (similarity 0.81)
• Hearing loss disrupts pitch via place, temporal, and interaural mechanisms. (similarity 0.81)
• Pitch-matching and binaural-cue methods yield uncorrelated electrode pairings in implant patients (similarity 0.81)
• Perceptual pitch ranking and direct electrical stimulation yield concordant electrode discrimination (similarity 0.80)
• Electrical cochlear stimulation produces faster, larger neural responses than acoustic stimulation (similarity 0.80)
• Pitch-ranking can identify which cochlear implant electrodes are safe to deactivate (similarity 0.79)
• Deactivating pitch-indiscriminable cochlear implant electrodes yields no speech benefit (similarity 0.79)
• Pitch-matched electrode pairs do not maximize binaural time-difference sensitivity (similarity 0.79)
• Deactivating cochlear electrodes with indistinct pitch responses improves speech perception for most users (similarity 0.79)
• Sloping or rising hearing loss can create contradictory pitch codes across frequency regions (similarity 0.79)
• Cochlear implant strategies should aim to restore F0-synchronized profiles, not stimulus spectra (similarity 0.79)

Broader Connections

• Hearing impairment disrupts both place and temporal pitch codes #expands (0.75) — Jennifer Lentz, Psychoacoustics- Perception of Normal…, 1326
• Sensorineural hearing loss damages pitch, harming speech-in-noise communication #expands (0.75) — Jennifer Lentz, Psychoacoustics- Perception of Normal…, 1324
• Cochlear implant input-output responses can reverse polarity preference at high levels #complicates (0.75)
• Pitch-matched electrode pairs do not maximize binaural time-difference sensitivity #qualifies (0.72) — Dijk, Pim van, Physiology, Psychoacoustics and…, 1469
• Missing efferent benefits may explain cochlear-implant users’ speech-in-noise deficits #complicates (0.72) — Dijk, Pim van, Physiology, Psychoacoustics and…, 1939