Binaural Processing and Auditory Asymmetries

Eddins, David A.; HallIII, Joseph W.

doi:10.1007/978-1-4419-0993-0_6

Cited by 18 publications

(11 citation statements)

References 121 publications

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“…There is a long history of clinicians and scientists using the term APD (e.g., Iliadou et al, 2018); yet, some clinicians and researchers are uncomfortable with the term due to the potential overlap of APD with language and cognitive dysfunction (e.g., Moore, 2018). The perspective taken by this study is that regardless of the clinical status of APD, it is undeniably the case that tests of auditory perceptual abilities (e.g., Moore et al, 2014;Eddins & Hall, 2010;Gallun et al, 2013) have the potential to shed light on complaints of hearing difficulties that are only weakly predicted by the audiogram or performance on clinical speech tests.…”

Section: Introductionmentioning

confidence: 90%

Portable Automated Rapid Testing (PART) for auditory assessment: Validation in a young adult normal-hearing population

Larrea-Mancera

Stavropoulos

Hoover

et al. 2020

Preprint

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AbstractThis study aims to determine the degree to which Portable Automated Rapid Testing (PART), a freely-available program running on a tablet computer, is capable of reproducing standard laboratory results. Undergraduate students were assigned to one of three within-subject conditions that examined repeatability of performance on a battery of psychoacoustical tests of temporal fine structure processing, spectro-temporal amplitude modulation, and targets in competition. The Repeatability condition examined test/retest with the same system, the Headphones condition examined the effects of varying headphones (passive and active noise-attenuating), and the Noise condition examined repeatability in the presence of recorded cafeteria noise. In general, performance on the test battery showed high repeatability, even across manipulated conditions, and was similar to that reported in the literature. These data serve as validation that suprathreshold psychoacoustical tests can be made accessible to run on consumer-grade hardware and performed in less controlled settings. This dataset also provides a distribution of thresholds that can be used as a normative baseline against which auditory dysfunction can be identified in future work.

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Section: Introductionmentioning

confidence: 90%

Portable Automated Rapid Testing (PART) for auditory assessment: Validation in a young adult normal-hearing population

Larrea-Mancera

Stavropoulos

Hoover

et al. 2020

Preprint

Self Cite

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“…We interpret this as a mechanism for strengthening the internal representations of temporally degraded signals by engaging top-down cognitive resources. Congruent with these interpretations, previous human and animal studies also describe age-related losses in auditory temporal processing and an inability to accurately localize sound in cluttered environments (Pichora-Fuller et al 2007;Dubno et al 2008;Eddins & Hall, 2010;King et al 2014;Harris & Dubno, 2017). Speech in noise conditions degrades speech understanding even in older individuals with healthy hearing (Pichora-Fuller et al 1995).…”

Section: Effects Of Ageing On Central Auditory System and Top-down Prmentioning

confidence: 96%

Top‐down or bottom up: decreased stimulus salience increases responses to predictable stimuli of auditory thalamic neurons

Kommajosyula

Cai

Bartlett

et al. 2019

The Journal of Physiology

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Key pointsr Temporal imprecision leads to deficits in the comprehension of signals in cluttered acoustic environments, and the elderly are shown to use cognitive resources to disambiguate these signals.r To mimic ageing in young rats, we delivered sound signals that are temporally degraded, which led to temporally imprecise neural codes.r Instead of adaptation to repeated stimuli, with degraded signals, there was a relative increase in firing rates, similar to that seen in aged rats.r We interpret this increase with repetition as a repair mechanism for strengthening the internal representations of degraded signals by the higher-order structures.Abstract To better understand speech in challenging environments, older adults increasingly use top-down cognitive and contextual resources. The medial geniculate body (MGB) integrates ascending inputs with descending predictions to dynamically gate auditory representations based on salience and context. A previous MGB single-unit study found an increased preference for predictable sinusoidal amplitude modulated (SAM) stimuli in aged rats relative to young rats. The results suggested that the age-degraded/jittered up-stream acoustic code may engender an increased preference for predictable/repeating acoustic signals, possibly reflecting increased use of top-down resources. In the present study, we recorded from units in young-adult MGB, comparing responses to standard SAM with those evoked by less salient SAM (degraded) stimuli. We hypothesized that degrading the SAM stimulus would simulate the degraded ascending acoustic code seen in the elderly, increasing the preference for predictable stimuli. Single units were recorded from clusters of advanceable tetrodes implanted above the MGB of young-adult awake rats. Less salient SAM significantly increased the preference for predictable stimuli, especially at Srinivasa P. Kommajosyula is a postdoctoral fellow at Southern Illinois University School of Medicine (SIU SOM) under the mentorship of Donald Caspary. His doctoral thesis on sudden death in epilepsy in audiogenic seizure models spurred his curiosity into maladaptive plasticity in networks witnessed in this model and central auditory system. His research interests include understanding the pathophysiological and compensatory changes in central auditory system with ageing and noise induced trauma. The present study highlights evidence of such changes in auditory thalamic coding of less salient stimuli that switch the preference of single unit to repeated stimuli. Rui Cai is a Research Instructor at SIU SOM. She obtained her PhD in East China Normal University where she studied the environmental effects on the plasticity of auditory function. She continues her work in auditory system in SIU, with an emphasis on the mechanisms of age-related hearing loss and tinnitus. * These authors contributed equally to this work. S. P. Kommajosyula and others J Physiol 597.10 higher modulation frequencies. Rather than adaptation, higher modulation frequencies elicited increased numbers of...

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“…Further, these deficits propagate to the central auditory system via degraded input and in the form of peripherally induced central changes that are comorbid with age-related changes in the central auditory system (Ouda, Profant, & Syka, 2015). Typical presbycusis is associated with reduced audibility (Allen & Eddins, 2010), poorer binaural and spatial hearing abilities (Eddins & Hall, 2010), and declines in temporal processing (Ozmeral, Eddins, Frisina, & Eddins, 2016). In addition, those suffering from age-related hearing loss (ARHL) often experience a difficulty in understanding speech in quiet or in the presence of competing background sounds (Humes & Dubno, 2010).…”

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confidence: 99%

How Do Age and Hearing Loss Impact Spectral Envelope Perception?

Ozmeral

Eddins

2018

J Speech Lang Hear Res

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The spectral envelope perception as measured by spectral modulation detection thresholds is compromised by hearing loss at higher spectral modulation frequencies, consistent with predictions of reduced spectral resolution known to accompany sensorineural hearing loss. Spectral envelope perception is not negatively impacted by advancing age at any spectral modulation frequency between 0.5 and 8.0 cycles/octave.

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Binaural Processing and Auditory Asymmetries

Cited by 18 publications

References 121 publications

Portable Automated Rapid Testing (PART) for auditory assessment: Validation in a young adult normal-hearing population

Portable Automated Rapid Testing (PART) for auditory assessment: Validation in a young adult normal-hearing population

Top‐down or bottom up: decreased stimulus salience increases responses to predictable stimuli of auditory thalamic neurons

How Do Age and Hearing Loss Impact Spectral Envelope Perception?

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