The effects of age and interaural delay on detecting a change in interaural correlation: The role of temporal jitter

Wang, Mengyuan; Wu, Xihong; Li, Liang; Schneider, Bruce A.

doi:10.1016/j.heares.2010.12.013

Cited by 18 publications

(10 citation statements)

References 37 publications

(34 reference statements)

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“…This limits the transmission of precise temporal information and increases the temporal jitter in afferent neuronal signal processing, and thus reduces the accuracy of interaural timing information. In particular, an increase in temporal jitter at the level of the auditory brain stem has been suggested by Pichora-Fuller and Schneider (1991, 1992 in experiments on binaural masking level differences in young and older adults as well as in experiments on the sensitivity to changes in interaural coherence (Wang et al 2011). These studies concluded that increased temporal jitter might account for the decline in sensitivity to interaural cues.…”

Section: Spatial Acuitymentioning

confidence: 79%

Age-related changes in sound localisation ability

et al. 2015

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Auditory spatial processing is an important ability in everyday life and allows the processing of omnidirectional information. In this review, we report and compare data from psychoacoustic and electrophysiological experiments on sound localisation accuracy and auditory spatial discrimination in infants, children, and young and older adults. The ability to process auditory spatial information changes over lifetime: the perception of the acoustic space develops from an initially imprecise representation in infants and young children to a concise representation of spatial positions in young adults and the respective performance declines again in older adults. Localisation accuracy shows a strong deterioration in older adults, presumably due to declined processing of binaural temporal and monaural spectro-temporal cues. When compared to young adults, the thresholds for spatial discrimination were strongly elevated both in young children and older adults. Despite the consistency of the measured values the underlying causes for the impaired performance might be different: (1) the effect is due to reduced cognitive processing ability and is thus task-related; (2) the effect is due to reduced information about the auditory space and caused by declined processing in auditory brain stem circuits; and (3) the auditory space processing regime in young children is still undergoing developmental changes and the interrelation with spatial visual processing is not yet established. In conclusion, we argue that for studying auditory space processing over the life course, it is beneficial to investigate spatial discrimination ability instead of localisation accuracy because it more reliably indicates changes in the processing ability.

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Section: Spatial Acuitymentioning

confidence: 79%

Age-related changes in sound localisation ability

et al. 2015

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“…Besides over-all hearing sensitivity we also obtained a suprathreshold measure of temporal processing by measuring the sensitivity to change in interaural correlation. This task is assumed to estimate loss of neural synchrony in the auditory system (Wang et al 2011), which in turn has been suggested to affect SiN perception.…”

Section: Introductionmentioning

confidence: 99%

The Contribution of Auditory and Cognitive Factors to Intelligibility of Words and Sentences in Noise

Heinrich

Knight

2016

Advances in Experimental Medicine and Biology

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Understanding the causes for speech-in-noise (SiN) perception difficulties is complex, and is made even more difficult by the fact that listening situations can vary widely in target and background sounds. While there is general agreement that both auditory and cognitive factors are important, their exact relationship to SiN perception across various listening situations remains unclear. This study manipulated the characteristics of the listening situation in two ways: first, target stimuli were either isolated words, or words heard in the context of low-(LP) and high-predictability (HP) sentences; second, the background sound, speech-modulated noise, was presented at two signal-to-noise ratios. Speech intelligibility was measured for 30 older listeners (aged 62-84) with age-normal hearing and related to individual differences in cognition (working memory, inhibition and linguistic skills) and hearing (PTA 0.25-8 kHz and temporal processing). The results showed that while the effect of hearing thresholds on intelligibility was rather uniform, the influence of cognitive abilities was more specific to a certain listening situation. By revealing a complex picture of relationships between intelligibility and cognition, these results may help us understand some of the inconsistencies in the literature as regards cognitive contributions to speech perception.

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“…Neurophysiological and electrophysiological studies have also found evidence of delayed neural timing, decreased neural synchrony, and decreased temporal processing ability with age (Walton et al, 1998; Wang M. et al, 2011; Parbery-Clark et al, 2012). Tremblay et al (2003) measured the cortical auditory evoked potentials (CAEPs) and observed that the N1 and P2 peak latencies recorded from older listeners were prolonged when they listened to the synthetic speech tokens.…”

Section: Introductionmentioning

confidence: 99%

Voice Pitch Elicited Frequency Following Response in Chinese Elderlies

Wang

Dong

et al. 2016

Front. Aging Neurosci.

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Background: Perceptual and electrophysiological studies have found reduced speech discrimination in quiet and noisy environment, delayed neural timing, decreased neural synchrony, and decreased temporal processing ability in elderlies, even those with normal hearing. However, recent studies have also demonstrated that language experience and auditory training enhance the temporal dynamics of sound encoding in the auditory brainstem response (ABR). The purpose of this study was to explore the pitch processing ability at the brainstem level in an aging population that has a tonal language background.Method: Mandarin speaking younger (n = 12) and older (n = 12) adults were recruited for this study. All participants had normal audiometric test results and normal suprathreshold click-evoked ABR. To record frequency following responses (FFRs) elicited by Mandarin lexical tones, two Mandarin Chinese syllables with different fundamental frequency pitch contours (Flat Tone and Falling Tone) were presented at 70 dB SPL. Fundamental frequencies (f0) of both the stimulus and the responses were extracted and compared to individual brainstem responses. Two indices were used to examine different aspects of pitch processing ability at the brainstem level: Pitch Strength and Pitch Correlation.Results: Lexical tone elicited FFR were overall weaker in the older adult group compared to their younger adult counterpart. Measured by Pitch Strength and Pitch Correlation, statistically significant group differences were only found when the tone with a falling f0 (Falling Tone) were used as the stimulus.Conclusion: Results of this study demonstrated that in a tonal language speaking population, pitch processing ability at the brainstem level of older adults are not as strong and robust as their younger counterparts. Findings of this study are consistent with previous reports on brainstem responses of older adults whose native language is English. On the other hand, lexical tone elicited FFRs have been shown to correlate with the length of language exposure. Older adults’ degraded responses in our study may also be due to that, the Mandarin speaking older adults’ long term exposure somewhat counteracted the negative impact on aging and helped maintain, or at least reduced, the degradation rate in their temporal processing capacity at the brainstem level.

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The effects of age and interaural delay on detecting a change in interaural correlation: The role of temporal jitter

Cited by 18 publications

References 37 publications

Age-related changes in sound localisation ability

Age-related changes in sound localisation ability

The Contribution of Auditory and Cognitive Factors to Intelligibility of Words and Sentences in Noise

Voice Pitch Elicited Frequency Following Response in Chinese Elderlies

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