Spectro-temporal modulation detection in children

Kirby, Benjamin; Browning, Jenna; Brennan, Marc A.; Spratford, Meredith; McCreery, Ryan W.

doi:10.1121/1.4935081

Cited by 28 publications

(34 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Mature SRD thresholds were observed in school-age children regardless of hearing method. These results are consistent with previous work demonstrating adult-like SRD in both NH and CI children at the age ranges tested (Jung et al, 2012;Peter et al, 2014;Kirby et al, 2015). The finding that SMTF slopes were flatter in CI listeners than in NH listeners but mature in both groups of children supports the hypothesis that frequency resolution is limited by hearing method but mature at least by school-age.…”

Section: A Frequency Resolution and Srdsupporting

confidence: 92%

See 1 more Smart Citation

Effects of age and hearing mechanism on spectral resolution in normal hearing and cochlear-implanted listeners

Horn

Dudley

Dedhia

et al. 2017

The Journal of the Acoustical Society of America

View full text Add to dashboard Cite

Spectral resolution limits speech perception with a cochlear implant (CI) in post-lingually deaf adults. However, the development of spectral resolution in pre-lingually deaf implanted children is not well understood. Acoustic spectral resolution was measured as a function of age (school-age versus adult) in CI and normal-hearing (NH) participants using spectral ripple discrimination (SRD). A 3-alternative forced-choice task was used to obtain SRD thresholds at five ripple depths. Effects of age and hearing method on SRD and spectral modulation transfer function (SMTF) slope (reflecting frequency resolution) and x-intercept (reflecting across-channel intensity resolution) were examined. Correlations between SRD, SMTF parameters, age, and speech perception in noise were studied. Better SRD in NH than CI participants was observed at all depths. SRD thresholds and SMTF slope correlated with speech perception in CI users. When adjusted for floor performance, x-intercept did not correlate with SMTF slope or speech perception. Age and x-intercept correlations were positive and significant in NH but not CI children suggesting that across-channel intensity resolution matures during school-age in NH children. No evidence for maturation of spectral resolution beyond early school-age in pre-lingually deaf implanted CI users was found in the present study.

show abstract

Section: A Frequency Resolution and Srdsupporting

confidence: 92%

“…Spectral resolution matures gradually in NH listeners (Blagosklonova et al, 1989;Peter et al, 2014;Rayes et al, 2014;Kirby et al, 2015). Previous research has shown that NH human infants can perceive changes in spectral patterns and shape (Trehub, 1973;Tsang and Trainor, 2002).…”

Section: Introductionmentioning

confidence: 95%

Effects of age and hearing mechanism on spectral resolution in normal hearing and cochlear-implanted listeners

Horn

Dudley

Dedhia

et al. 2017

The Journal of the Acoustical Society of America

View full text Add to dashboard Cite

show abstract

“…Taken with the limited literature on SRD in older children, this would place the age of maturation for SRD somewhere between 7-months-old and 8–11 years for NH listeners (Blagosklonova et al 1989, Allen and Wightman 1994, Jung et al 2012, Peter et al 2014). Recently, similar rates of spectral resolution maturation have been reported for tasks involving minimum-phase difference detection (Rayes et al 2014) as well as dynamic spectro-temporal phase detection (Rayes et al 2014, Kirby et al 2015). …”

Section: Discussionsupporting

confidence: 54%

Spectral Ripple Discrimination in Normal-Hearing Infants

et al. 2017

View full text Add to dashboard Cite

Objectives Spectral resolution is a correlate of open-set speech understanding in post-lingually deaf adults as well as pre-lingually deaf children who use cochlear implants (CIs). In order to apply measures of spectral resolution to assess device efficacy in younger CI users, it is necessary to understand how spectral resolution develops in NH children. In this study, spectral ripple discrimination (SRD) was used to measure listeners’ sensitivity to a shift in phase of the spectral envelope of a broadband noise. Both resolution of peak to peak location (frequency resolution) and peak to trough intensity (across-channel intensity resolution) are required for SRD. Design SRD was measured as the highest ripple density (in ripples per octave) for which a listener could discriminate a 90 degree shift in phase of the sinusoidally-modulated amplitude spectrum. A 2X3 between subjects design was used to assess the effects of age (7-month-old infants versus adults) and ripple peak/trough “depth” (10, 13, and 20 dB) on SRD in normal hearing listeners (Experiment 1). In Experiment 2, SRD thresholds in the same age groups were compared using a task in which ripple starting phases were randomized across trials to obscure within-channel intensity cues. In Experiment 3, the randomized starting phase method was used to measure SRD as a function of age (3-month-old infants, 7-month-old infants, and young adults) and ripple depth (10 and 20 dB in repeated measures design). Results In Experiment 1, there was a significant interaction between age and ripple depth. The Infant SRDs were significantly poorer than the adult SRDs at 10 and 13 dB ripple depths but adult-like at 20 dB depth. This result is consistent with immature across-channel intensity resolution. In contrast, the trajectory of SRD as a function of depth was steeper for infants than adults suggesting that frequency resolution was better in infants than adults. However, in Experiment 2 infant performance was significantly poorer than adults at 20 dB depth suggesting that variability of infants’ use of within-channel intensity cues, rather than better frequency resolution, explained the results of Experiment 1. In Experiment 3, age effects were seen with both groups of infants showing poorer SRD than adults but, unlike Experiment 1, no significant interaction between age and depth was seen. Conclusions Measurement of SRD thresholds in individual 3 to 7-month-old infants is feasible. Performance of NH infants on SRD may be limited by across-channel intensity resolution despite mature frequency resolution. These findings have significant implications for design and stimulus choice for applying SRD for testing infants with CIs. The high degree of variability in infant SRD can be somewhat reduced by obscuring within-channel cues.

show abstract

“…Recently, a modified version of the traditional spectral ripple test, the Spectral-temporally Modulated Ripple Test (SMRT; Aronoff & Landsberger 2013) has been used in a number of studies (Vickers et al 2016; Holden et al 2016; Aronoff et al 2016b; Kirby et al 2015; Zhou 2017). The SMRT uses a spectral ripple with a ripple phase that drifts over time.…”

Section: Introductionmentioning

confidence: 99%

Comparison of the Spectral-Temporally Modulated Ripple Test With the Arizona Biomedical Institute Sentence Test in Cochlear Implant Users

Lawler

Aronoff

2017

Ear &Amp; Hearing

View full text Add to dashboard Cite

Objectives Although speech perception is the gold standard for measuring cochlear implant (CI) users’ performance, speech perception tests often require extensive adaptation to obtain accurate results, particularly after large changes in maps. Spectral ripple tests, which measure spectral resolution, are an alternate measure that has been shown to correlate with speech perception. A modified spectral ripple test, the spectral-temporally modulated ripple test (SMRT) has recently been developed, and the objective of this study is to compare speech perception and performance on the SMRT for a heterogeneous population of unilateral CI users, bilateral CI users, and bimodal users. Design Twenty-five CI users (eight using unilateral CIs, nine using bilateral CIs, and eight using a CI and a hearing aid) were tested on the Arizona Biomedical Institute Sentence Test (AzBio) with a +8 dB signal-to-noise ratio, and on the SMRT. All participants were tested with their clinical programs. Results There was a significant correlation between SMRT and AzBio performance. After a practice block, an improvement of 1 ripple per octave for SMRT corresponded to an improvement of 12.1% for AzBio. Additionally, there was no significant difference in slope or intercept between any of the CI populations. Conclusion The results indicate that performance on the SMRT correlates with speech recognition in noise when measured across unilateral, bilateral, and bimodal CI populations. These results suggest that SMRT scores are strongly associated with speech recognition in noise ability in experienced CI users. Further studies should focus on increasing both the size and diversity of the tested participants, and on determining whether the SMRT technique can be used for early predictions of long-term speech scores, or for evaluating differences among different stimulation strategies or parameter settings.

show abstract

Spectro-temporal modulation detection in children

Cited by 28 publications

References 8 publications

Effects of age and hearing mechanism on spectral resolution in normal hearing and cochlear-implanted listeners

Effects of age and hearing mechanism on spectral resolution in normal hearing and cochlear-implanted listeners

Spectral Ripple Discrimination in Normal-Hearing Infants

Comparison of the Spectral-Temporally Modulated Ripple Test With the Arizona Biomedical Institute Sentence Test in Cochlear Implant Users

Contact Info

Product

Resources

About