PI-PB Rollover in a Group of Aged Listeners

Shirinian, Michael J.; Arnst, Dennis J.

doi:10.1097/00003446-198001000-00009

Cited by 6 publications

(3 citation statements)

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“…To elicit the effect, the sound level usually needs to exceed 70 dB SPL (Jerger et al 1971;Studebaker et al 1999;Miranda & Pichora-Fuller 2002). Last, the rollover effect appears to increase in prevalence as people age (Jerger & Jerger 1971;Gang 1976;Dirks et al 1977;Shirinian & Arnst 1980).…”

Section: Level Effects and Rollover In Speech Perceptionmentioning

confidence: 99%

The Effect of Presentation Level on Memory Performance

Heinrich

Schneider

2011

Ear &Amp; Hearing

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Objectives: A loss of speech intelligibility at high presentation levels is called rollover. It is a phenomenon that increases in prevalence as people age. Whether the adverse effect of high presentation levels extends to processes subsequent to speech intelligibility, such as memory, is unknown. The present study examined this question on the basis of the previous finding that older but not younger adults showed memory impairment when acoustically distorted words were presented at 50 dB SL compared with an undistorted baseline presented at 65 dB SPL. One question investigated in the present study was whether a presentation level of 50 dB SL put older listeners at the cusp of rollover and whether this subsequently impaired memory. Moreover, we wanted to know whether and at what level it was possible to induce a similar impairment in younger listeners. Design:We used a paired-associate memory paradigm in which five word pairs per list were presented at a rate of 4 secs per word pair. After each list, the first word of one of the pairs was presented again and the listener was asked to recall the second word. Over the course of the experiment, all list positions were tested an equal number of times. The word pairs, which were acoustically distorted using a jittering algorithm, were presented at 40 dB SL to all younger and older participants and just below an uncomfortably loud level for younger listeners only. Intelligibility of the distorted words was equated across age groups for each presentation level. The effect of presentation level on memory performance was investigated and compared with data of a previous study that used the same design but presented the distorted and undistorted words at 50 dB SL to both age groups. A total of 58 younger and 24 older adults were tested in two experiments. Results:The results showed that for older adults, memory performance for distorted words was decreased in all list positions at a presentation level of 50 dB SL compared with 40 dB SL and an undistorted 65 dB SPL baseline. This effect did not occur for younger listeners. However, when younger adults were tested at a very high presentation level, they showed the same memory decrease compared with the baseline as older adults showed for 50 dB SL. Conclusions:A high presentation level of distorted words can adversely affect memory even after intelligibility is equated for. Moreover, older listeners are affected at lower presentation levels. Hence, the choice of sound level, particularly for older listeners, is important and may affect their level of cognitive performance beyond its effects on intelligibility. Higher presentation levels may not always lead to better performance when the task involves recall of words previously heard.

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Section: Level Effects and Rollover In Speech Perceptionmentioning

confidence: 99%

The Effect of Presentation Level on Memory Performance

Heinrich

Schneider

2011

Ear &Amp; Hearing

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“…Although Gang (1976) found a tendency for the rollover index to increase with age, the value of the index for most older persons apparently is not high enough to place them into the retrocochlear category. The two studies that have addressed this issue (Gang, 1976;Shirinian and Arnst, 1980) both used recorded W-22s, but did not specify the talker. They also used higher maximum levels than did previous investigators with the PAL-50s.…”

Section: Pi-pb Rollovermentioning

confidence: 99%

Audiological Assessment of Older Adults

Marshall¹

1985

Semin Hear

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“…Neural dyssynchrony has been offered as a possible explanation for a number of agerelated changes in psychoacoustic and speech measures in humans, including increased frequency difference limens, reduced binaural masking-level differences, and poorer speech perception in noise (Schneider and Pichora-Fuller, 2001). Clinically, several authors have found that pronounced PI-PB rollover, though rare in the general clinical population, is more common among aged listeners (e.g., Jerger and Jerger, 1971;Gang, 1976;Dirks et aI, 1977;Shirinian and Arnst, 1980). Because there is substantial evidence to suggest that neural dyssynchrony is more common in the older adult population (for reviews, see Schneider, 1997a;Miranda, 2000) and because pronounced PI-PB rollover is also more common in older adults, support is given to the proposed association between rollover and neural dyssynchrony.…”

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confidence: 99%

Temporally Jittered Speech Produces Performance Intensity, Phonetically Balanced Rollover in Young Normal-Hearing Listeners

Miranda

Pichora‐Fuller²

2002

J Am Acad Audiol

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This study investigates whether temporally jittered stimuli will produce performance-intensity, phonetically balanced (PI-PB) rollover in young adults with normal hearing. Although not yet explicitly stated in the literature, there is clinical and theoretical evidence to suggest that PI-PB rollover, such as that found in cases of acoustic neuroma, is caused by neural dyssynchrony in the auditory system. Sixteen participants were tested with intact and temporally jittered word lists in quiet at 40, 55, 65, and uncomfortable listening level −5 dB HL. The results show significant rollover in the jittered but not the intact conditions. The results are consistent with the existing evidence that suggests that neural PI-PB rollover is caused by decreased neural synchrony and support the claim that temporal jitter simulates neural dyssynchrony. Furthermore, these results are consistent with the hypothesis that synchrony coding plays an important role in the perception of high-level speech.

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PI-PB Rollover in a Group of Aged Listeners

Cited by 6 publications

References 0 publications

The Effect of Presentation Level on Memory Performance

The Effect of Presentation Level on Memory Performance

Audiological Assessment of Older Adults

Temporally Jittered Speech Produces Performance Intensity, Phonetically Balanced Rollover in Young Normal-Hearing Listeners

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