Relationship between Behavioral and Objective Measures of Sound Intensity in Normal-Hearing Listeners and Hearing-Aid Users: A Pilot Study

Legris, E.; Galvin, John J.; Mofid, Yassine; Aguillon‐Hernandez, Nadia; Roux, Sylvie; Aoustin, Jean-Marie; Gomot, Marie; Bakhos, D.

doi:10.3390/brainsci12030392

Cited by 7 publications

(4 citation statements)

References 74 publications

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“…Another possibility is that increased loudness due to binaural summation contributed to greater pupil dilation in the Bilateral condition compared to either monaural condition. Indeed, Legris et al (2022) demonstrated increasing maximum pupil diameter with increasing tone burst level (40 dBA, 60 dBA, 80 dBA) in both NH participants and hearing aid users. For NH participants, pupil dilation was significantly larger for all increases in level, but for hearing aid users, pupil dilation was only significantly different when comparing the 40 dBA condition to 80 dBA condition, regardless of whether or not participants were using their hearing aids.…”

Section: Discussionmentioning

confidence: 91%

“…For NH participants, pupil dilation was significantly larger for all increases in level, but for hearing aid users, pupil dilation was only significantly different when comparing the 40 dBA condition to 80 dBA condition, regardless of whether or not participants were using their hearing aids. The 20 dB step size used by Legris et al (2022) corresponds to a fourfold increase in loudness, whereas an increase of about 3 dB, as is typical for binaural summation, only corresponds to a 1.2-fold increase in loudness ( Epstein and Florentine, 2012 ). Thus, the need to use large step sizes, especially in the hearing aid user group, indicates that the potential 3 dB of binaural summation experienced by BiCI users in the present study is very unlikely to have caused any significant change in pupil dilation.…”

Section: Discussionmentioning

confidence: 99%

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Interaural speech asymmetry predicts bilateral speech intelligibility but not listening effort in adults with bilateral cochlear implants

Burg

Thakkar²,

Litovsky³

2022

Front. Neurosci.

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IntroductionBilateral cochlear implants (BiCIs) can facilitate improved speech intelligibility in noise and sound localization abilities compared to a unilateral implant in individuals with bilateral severe to profound hearing loss. Still, many individuals with BiCIs do not benefit from binaural hearing to the same extent that normal hearing (NH) listeners do. For example, binaural redundancy, a speech intelligibility benefit derived from having access to duplicate copies of a signal, is highly variable among BiCI users. Additionally, patients with hearing loss commonly report elevated listening effort compared to NH listeners. There is some evidence to suggest that BiCIs may reduce listening effort compared to a unilateral CI, but the limited existing literature has not shown this consistently. Critically, no studies to date have investigated this question using pupillometry to quantify listening effort, where large pupil sizes indicate high effort and small pupil sizes indicate low effort. Thus, the present study aimed to build on existing literature by investigating the potential benefits of BiCIs for both speech intelligibility and listening effort.MethodsTwelve BiCI adults were tested in three listening conditions: Better Ear, Poorer Ear, and Bilateral. Stimuli were IEEE sentences presented from a loudspeaker at 0° azimuth in quiet. Participants were asked to repeat back the sentences, and responses were scored by an experimenter while changes in pupil dilation were measured.ResultsOn average, participants demonstrated similar speech intelligibility in the Better Ear and Bilateral conditions, and significantly worse speech intelligibility in the Poorer Ear condition. Despite similar speech intelligibility in the Better Ear and Bilateral conditions, pupil dilation was significantly larger in the Bilateral condition.DiscussionThese results suggest that the BiCI users tested in this study did not demonstrate binaural redundancy in quiet. The large interaural speech asymmetries demonstrated by participants may have precluded them from obtaining binaural redundancy, as shown by the inverse relationship between the two variables. Further, participants did not obtain a release from effort when listening with two ears versus their better ear only. Instead, results indicate that bilateral listening elicited increased effort compared to better ear listening, which may be due to poor integration of asymmetric inputs.

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Section: Discussionmentioning

confidence: 91%

Section: Discussionmentioning

confidence: 99%

Interaural speech asymmetry predicts bilateral speech intelligibility but not listening effort in adults with bilateral cochlear implants

Burg

Thakkar²,

Litovsky³

2022

Front. Neurosci.

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“…To investigate the correlation among oxidative stress responses, elemental content, and metabolomics data, an explorative method called "focused PCA" was performed (Falissard 1999). This method is advantageous when the relationship between a responsive variable (the focused one) and explanatory variables is sought (Nicoletto et al 2018;Mander et al 2021;Hequet et al 2022;Legris et al 2022).…”

Section: Explorative Analysis By Focused Pcamentioning

confidence: 99%

Landfill fire impact on bee health: beneficial effect of dietary supplementation with medicinal plants and probiotics in reducing oxidative stress and metal accumulation

Giampaoli,

Messi,

Merlet

et al. 2023

Environ Sci Pollut Res

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The honey bee is an important pollinator insect susceptible to environmental contaminants. We investigated the effects of a waste fire event on elemental content, oxidative stress, and metabolic response in bees fed different nutrients (probiotics, Quassia amara, and placebo). The level of the elements was also investigated in honey and beeswax. Our data show a general increase in elemental concentrations in all bee groups after the event; however, the administration of probiotics and Quassia amara help fight oxidative stress in bees. Significantly lower concentrations of Ni, S, and U for honey in the probiotic group and a general and significant decrease in elemental concentrations for beeswax in the probiotic group and Li in the Quassia amara group were observed after the fire waste event. The comparison of the metabolic profiles through pre-and post-event PCA analyses showed that bees treated with different feeds react differently to the environmental event. The greatest differences in metabolic profiles are observed between the placebo-fed bees compared to the others. This study can help to understand how some stress factors can affect the health of bees and to take measures to protect these precious insects.

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“…Pupil also reacts to pure tones (Legris et al, 2022) but also to emotional sounds such as vocalizations or voices that also induced dilation (Cherng et al, 2020;Zekveld et al, 2018), that is modulated, as for visual stimuli, by authenticity (Cosme et al, 2021). Strong auditory emotions through vocalizations, whether positive (baby laughing) or negative (a couple fighting), induce pupil dilation (Jin et al, 2015;Partala & Surakka, 2003), with a larger effect for negative compared to positive stimuli (Babiker et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

‘My face is listening to your smile’: Emotional contagion to vocal smile revealed by combined pupil reactivity and motor resonance

Merchie,

Ranty,

Aguillon-Hernandez

et al. 2024

Preprint

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Interaction between the different components of emotional contagion (i.e. emotional state and facial motor resonance), whether during implicit or explicit appraisal of emotion remains controversial. The aim of this study was i) to separate between these components thanks to vocal smile processing and ii) to estimate how they reflect implicit processes and/or an explicit appraisal loop. Emotional contagion to discrete vocal emotions was studied in 25 adults, through motor resonance and Autonomic Nervous System (ANS) reactivity. Facial expressions (fEMG: facial electromyography) and pupil dilation were assessed during processing and judgement of artificially emotionally modified sentences. fEMG revealed that Zygomaticus major was reactive to perceived sounds valence while Corrugator supercilii activity rather reflected explicit judgement. Timing analysis of pupil dilation provided further insight into both the emotional state and the implicit and explicit processing of vocal emotion, showing an early activity for emotional stimuli compared to neutral ones, followed by variations based on sounds valence, and by a late additional increase of pupil diameter depending on judgement. This innovative combination of these electrophysiological measures shed new light on the debated central and peripherical views within the framework of emotional contagion.

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Relationship between Behavioral and Objective Measures of Sound Intensity in Normal-Hearing Listeners and Hearing-Aid Users: A Pilot Study

Cited by 7 publications

References 74 publications

Interaural speech asymmetry predicts bilateral speech intelligibility but not listening effort in adults with bilateral cochlear implants

Interaural speech asymmetry predicts bilateral speech intelligibility but not listening effort in adults with bilateral cochlear implants

Landfill fire impact on bee health: beneficial effect of dietary supplementation with medicinal plants and probiotics in reducing oxidative stress and metal accumulation

‘My face is listening to your smile’: Emotional contagion to vocal smile revealed by combined pupil reactivity and motor resonance

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