Perception of Pure Tones and Iterated Rippled Noise for Normal Hearing and Cochlear Implant Users

Penninger, Richard T.; Jiradejvong, Patpong; Boeke, Emily A.; Carver, Courtney; Limb, Charles J.

doi:10.1177/1084713813482759

Cited by 9 publications

(10 citation statements)

References 35 publications

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“…When using IRN, all electrodes would be stimulated simultaneously, generating a periodicity-based pitch perception rather than a pitch perception based on the electrode location within the cochlea. Penninger et al [2013] reported just close to chance level pitch ranking in CI users comparing pure tones and IRN with 8 iterations. However, more iterations would have evoked a more salient pitch and could thus have improved pitch ranking in the CI users.…”

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confidence: 56%

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Perception of Iterated Rippled Noise Periodicity in Cochlear Implant Users

Wagner

Plontke²,

Rahne³

2017

Audiol Neurotol

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Pitch perception is more challenging for individuals with cochlear implants (CIs) than normal-hearing subjects because the signal processing by CIs is restricted. Processing and perceiving the periodicity of signals may contribute to pitch perception. Whether individuals with CIs can discern pitch within an iterated rippled noise (IRN) signal is still unclear. In a prospective controlled psychoacoustic study with 34 CI users and 15 normal-hearing control subjects, the difference limen between IRN signals with different numbers of iterations was measured. In 7 CI users and 15 normal-hearing control listeners with single-sided deafness, pitch matching between IRN and harmonic complex tones was measured. The pitch onset response (POR) following signal changes from white noise to IRN was measured electrophysiologically. The CI users could discriminate different numbers of iteration in IRN signals, but worse than normal-hearing listeners. A POR was measured for both normal-hearing subjects and CI users increasing with the pitch salience of the IRN. This indicates that the POR could serve as an objective measure to monitor progress during audioverbal therapy after CI surgery.

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confidence: 56%

“…To investigate periodicity perception psychoacoustically and neurophysiologically, iterated rippled noise (IRN) stimulation has been used due to its specific features [Krumbholz et al, 2003;Butler and Trainor, 2012;Penninger et al, 2013]. IRN is a pitch-evoking signal formed by repeatedly imposed white noise with a delay to the original white noise signal.…”

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confidence: 99%

Perception of Iterated Rippled Noise Periodicity in Cochlear Implant Users

Wagner

Plontke²,

Rahne³

2017

Audiol Neurotol

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“…-a term used in the current paper. Studies with adults have reported that ACC responses to IRN stimuli correlate with behavioral measures of temporal pitch perception [7][8][9][10] and have high testretest reliability 11,12 . ACC responses have also been explored in infants and young children [13][14][15][16] .…”

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confidence: 99%

The Maturation of the Acoustic Change Complex in Response to Iterated Ripple Noise in ‘Normal’-Hearing Infants, Toddlers, and Adults

et al. 2022

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Background: Infants and toddlers are still being evaluated for their hearing sensitivity but not their auditory processing skills. Iterated Rippled Noise (IRN) stimuli require the auditory system to utilize the temporal periodicity and auto-correlate the iterations to perceive pitch. Purpose: This study investigated the acoustic change complex (ACC) elicited by iterated ripple noise (IRN) in normal-hearing infants, toddlers, and adults to determine the maturation of cortical processing of IRN stimuli. Design: Cortical responses to filtered white noise (onset) concatenated with IRN stimuli [d=10 ms, gain=0.7 dB: 4-32 iterations] were recorded in quiet, alert participants. Study Sample: Participants included 25 infants (2.5-15 months), 27 toddlers (22-59 months), and 8 adults (19-25 years) with normal hearing sensitivity. Data collection and analysis: Cortical auditory evoked responses were recorded for each participant, including the onset response to the noise and an ACC to the transition from noise to IRN. Group differences were assessed using repeated-measures analyses of variance (ANOVAs). Results: Most infants had a replicable onset (P) response, while only about half had a measurable ACC (PACC) response to the high-saliency IRN condition. Most toddlers had onset responses and also showed a P-NACC response to the high-saliency IRN16 and IRN32 conditions. Most of the toddler group had responses present to the onset and showed a P-NACC response to all IRN conditions. Toddlers and adults showed similar P-NACC amplitudes however adults showed an increase in N1ACC amplitude with increase in IRN iterations (i.e., increased salience). Conclusions: While cortical responses to the percept of sound as determined by the onset response (P) to a stimulus is present in most infants, ACC responses to IRN stimuli are not mature in infancy. Most toddlers as young as 22 months, however, exhibited ACC responses to the IRN stimuli even when the pitch saliency was low (e.g., IRN4). The findings of the current study have implications for future research when investigating maturational effects on ACC and the optimal choice of stimuli.

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“…Perception of more complex sounds, such as music, still remains challenging for most CI users (1). In particular, pitch is the most difficult component of music to transmit (2). In normal hearing (NH) listeners, pitch is partly encoded by the place of stimulation along the cochlea (known as place pitch), where the basal regions of the cochlea respond optimally to high frequencies and the apical regions to low frequencies (3).…”

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confidence: 99%