Trends in HearingPub Date : 2025-01-01Epub Date: 2025-03-18DOI: 10.1177/23312165251317923
Charlotte Vercammen, Olaf Strelcyk
{"title":"Development and Validation of a Self-Administered Online Hearing Test.","authors":"Charlotte Vercammen, Olaf Strelcyk","doi":"10.1177/23312165251317923","DOIUrl":"10.1177/23312165251317923","url":null,"abstract":"<p><p>We describe the development and validation of a self-administered online hearing test, which screens for hearing loss and provides an estimated audiogram. The hearing test computes test results from age, self-reported hearing abilities, and self-assessed pure-tone thresholds. It relies on regression, Bayesian and binary classification, leveraging probabilistic effects of age as well as interfrequency and interaural relationships in audiograms. The test was devised based on development data, collected prospectively in an online experiment from a purposive convenience sample of 251 adult American, Australian, Canadian, and Swiss participants, 58% of whom had hearing loss. Later, we externally validated the hearing test. Validation data were collected prospectively from a representative sample of 156 adult Belgian participants, 15% of whom had hearing loss. Participants completed the hearing test and audiometric assessments at home. The results for the primary screening outcome showed that the hearing test screened for mild hearing losses with a sensitivity of 0.83 [95%-confidence interval (CI): 0.65, 0.96], specificity of 0.94 [CI: 0.89, 0.98], positive predictive value of 0.70 [CI: 0.57, 0.87], and negative predictive value of 0.97 [CI: 0.94, 0.99]. Results for the secondary audiogram estimation outcome showed mean differences between estimated and gold standard hearing thresholds ranging from 2.1 to 12.4 dB, with an average standard deviation of the differences of 14.8 dB. In conclusion, the hearing test performed comparably to state-of-the-art hearing screeners. This test, therefore, is a validated alternative to existing screening tools, and, additionally, it provides an estimated audiogram.</p>","PeriodicalId":48678,"journal":{"name":"Trends in Hearing","volume":"29 ","pages":"23312165251317923"},"PeriodicalIF":2.6,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11920986/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143659046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Trends in HearingPub Date : 2025-01-01Epub Date: 2025-04-03DOI: 10.1177/23312165251333225
Markus Kemper, Florian Denk, Hendrik Husstedt, Jonas Obleser
{"title":"Acoustically Transparent Hearing Aids Increase Physiological Markers of Listening Effort.","authors":"Markus Kemper, Florian Denk, Hendrik Husstedt, Jonas Obleser","doi":"10.1177/23312165251333225","DOIUrl":"10.1177/23312165251333225","url":null,"abstract":"<p><p>While hearing aids are beneficial in compensating for hearing loss and suppressing ambient noise, they may also introduce an unwanted processing burden to the listener's sensory and cognitive system. To investigate such adverse side effects, hearing aids may be set to a 'transparent mode', aiming to replicate natural hearing through the open ear as best as possible. Such transparent hearing aids have previously been demonstrated to exhibit a small but significant disadvantage in speech intelligibility, with less conclusive effects on self-rated listening effort. Here we aimed to reproduce these findings and expand them with neurophysiological measures of invested listening effort, including parietal alpha power and pupil size. Invested listening effort was measured across five task difficulties, ranging from nearly impossible to easy, with normal-hearing participants in both aided and unaided conditions. Results well reproduced a hearing aid disadvantage for speech intelligibility and subjective listening effort ratings. As to be expected, pupil size and parietal alpha power followed an inverted u-shape, peaking at moderate task difficulties (around SRT50). However, the transparent hearing aid increased pupil size and parietal alpha power at medium task demand (between SRT20 and SRT80). These neurophysiological effects were larger than those observed in speech intelligibility and subjective listening effort, respectively. The results gain plausibility by yielding a substantial association of individual pupil size and individual parietal alpha power. In sum, our findings suggest that key neurophysiological measures of invested listening effort are sensitive to the individual additional burden on speech intelligibility that hearing aid processing can introduce.</p>","PeriodicalId":48678,"journal":{"name":"Trends in Hearing","volume":"29 ","pages":"23312165251333225"},"PeriodicalIF":2.6,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11970058/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143781706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Trends in HearingPub Date : 2025-01-01Epub Date: 2025-05-15DOI: 10.1177/23312165251343457
Miriam I Marrufo-Pérez, Enrique A Lopez-Poveda
{"title":"Speech Recognition and Noise Adaptation in Realistic Noises.","authors":"Miriam I Marrufo-Pérez, Enrique A Lopez-Poveda","doi":"10.1177/23312165251343457","DOIUrl":"10.1177/23312165251343457","url":null,"abstract":"<p><p>The recognition of isolated words in noise improves as words are delayed from the noise onset. This phenomenon, known as adaptation to noise, has been mostly investigated using synthetic noises. The aim here was to investigate whether adaptation occurs for realistic noises and to what extent it depends on the spectrum and level fluctuations of the noise. Forty-nine different realistic and synthetic noises were analyzed and classified according to how much they fluctuated in level over time and how much their spectra differed from the speech spectrum. Six representative noises were chosen that covered the observed range of level fluctuations and spectral differences but could still mask speech. For the six noises, speech reception thresholds (SRTs) were measured for natural and tone-vocoded words delayed 50 (early condition) and 800 ms (late condition) from the noise onset. Adaptation was calculated as the SRT improvement in the late relative to the early condition. Twenty-two adults with normal hearing participated in the experiments. For natural words, adaptation was small overall (mean = 0.5 dB) and similar across the six noises. For vocoded words, significant adaptation occurred for all six noises (mean = 1.3 dB) and was not statistically different across noises. For the tested noises, the amount of adaptation was independent of the spectrum and level fluctuations of the noise. The results suggest that adaptation in speech recognition can occur in realistic noisy environments.</p>","PeriodicalId":48678,"journal":{"name":"Trends in Hearing","volume":"29 ","pages":"23312165251343457"},"PeriodicalIF":2.6,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12081978/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144081428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Comparison of Deep Learning Models for Objective Auditory Brainstem Response Detection: A Multicenter Validation Study.","authors":"Yin Liu, Lingjie Xiang, Qiang Li, Kangkang Li, Yihan Yang, Tiantian Wang, Yuting Qin, Xinxing Fu, Yu Zhao, Chenqiang Gao","doi":"10.1177/23312165251347773","DOIUrl":"10.1177/23312165251347773","url":null,"abstract":"<p><p>Auditory brainstem response (ABR) interpretation in clinical practice often relies on visual inspection by audiologists, which is prone to inter-practitioner variability. While deep learning (DL) algorithms have shown promise in objectifying ABR detection in controlled settings, their applicability to real-world clinical data is hindered by small datasets and insufficient heterogeneity. This study evaluates the generalizability of nine DL models for ABR detection using large, multicenter datasets. The primary dataset analyzed, Clinical Dataset I, comprises 128,123 labeled ABRs from 13,813 participants across a wide range of ages and hearing levels, and was divided into a training set (90%) and a held-out test set (10%). The models included convolutional neural networks (CNNs; AlexNet, VGG, ResNet), transformer-based architectures (Transformer, Patch Time Series Transformer [PatchTST], Differential Transformer, and Differential PatchTST), and hybrid CNN-transformer models (ResTransformer, ResPatchTST). Performance was assessed on the held-out test set and four external datasets (Clinical II, Southampton, PhysioNet, Mendeley) using accuracy and area under the receiver operating characteristic curve (AUC). ResPatchTST achieved the highest performance on the held-out test set (accuracy: 91.90%, AUC: 0.976). Transformer-based models, particularly PatchTST, showed superior generalization to external datasets, maintaining robust accuracy across diverse clinical settings. Additional experiments highlighted the critical role of dataset size and diversity in enhancing model robustness. We also observed that incorporating acquisition parameters and demographic features as auxiliary inputs yielded performance gains in cross-center generalization. These findings underscore the potential of DL models-especially transformer-based architectures-for accurate and generalizable ABR detection, and highlight the necessity of large, diverse datasets in developing clinically reliable systems.</p>","PeriodicalId":48678,"journal":{"name":"Trends in Hearing","volume":"29 ","pages":"23312165251347773"},"PeriodicalIF":2.6,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12134522/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144209976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Trends in HearingPub Date : 2025-01-01Epub Date: 2025-08-25DOI: 10.1177/23312165251372462
Heidi B Borges, Emina Alickovic, Christian B Christensen, Preben Kidmose, Johannes Zaar
{"title":"Age-Related Differences in EEG-Based Speech Reception Threshold Estimation Using Scalp and Ear-EEG.","authors":"Heidi B Borges, Emina Alickovic, Christian B Christensen, Preben Kidmose, Johannes Zaar","doi":"10.1177/23312165251372462","DOIUrl":"https://doi.org/10.1177/23312165251372462","url":null,"abstract":"<p><p>Previous studies have demonstrated the feasibility of estimating the speech reception threshold (SRT) based on electroencephalography (EEG), termed SRT<sub>neuro</sub>, in younger normal-hearing (YNH) participants. This method may support speech perception in hearing-aid users through continuous adaptation of noise-reduction algorithms. The prevalence of hearing impairment and thereby hearing-aid use increases with age. The SRT<sub>neuro</sub> estimation is based on envelope reconstruction accuracy, which has also been shown to increase with age, possibly due to excitatory/inhibitory imbalance or recruitment of additional cortical regions. This could affect the estimated SRT<sub>neuro</sub>. This study investigated the age-related changes in the temporal response function (TRF) and the feasibility of SRT<sub>neuro</sub> estimation across age. Twenty YNH and 22 older normal-hearing (ONH) participants listened to audiobook excerpts at various signal-to-noise ratios (SNRs) while EEG was recorded using 66 scalp electrodes and 12 in-ear-EEG electrodes. A linear decoder reconstructed the speech envelope, and the Pearson's correlation was calculated between the reconstructed and speech-stimulus envelopes. A sigmoid function was fitted to the reconstruction-accuracy-versus-SNR data points, and the midpoint was used as the estimated SRT<sub>neuro</sub>. The results show that the SRT<sub>neuro</sub> can be estimated with similar precision in both age groups, whether using all scalp electrodes or only those in and around the ear. This consistency across age groups was observed despite physiological differences, with the ONH participants showing higher reconstruction accuracies and greater TRF amplitudes. Overall, these findings demonstrate the robustness of the SRT<sub>neuro</sub> method in older individuals and highlight its potential for applications in age-related hearing loss and hearing-aid technology.</p>","PeriodicalId":48678,"journal":{"name":"Trends in Hearing","volume":"29 ","pages":"23312165251372462"},"PeriodicalIF":3.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12378310/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144975106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Trends in HearingPub Date : 2025-01-01Epub Date: 2025-09-05DOI: 10.1177/23312165251375891
Maxime Perron, Andrew Dimitrijevic, Claude Alain
{"title":"Rapid Brain Adaptation to Hearing Amplification: A Randomized Crossover Trial of Personal Sound Amplification Products.","authors":"Maxime Perron, Andrew Dimitrijevic, Claude Alain","doi":"10.1177/23312165251375891","DOIUrl":"10.1177/23312165251375891","url":null,"abstract":"<p><p>Understanding speech in noise is a common challenge for older adults, often requiring increased listening effort that can deplete cognitive resources and impair higher-order functions. Hearing aids are the gold standard intervention for hearing loss, but cost and accessibility barriers have driven interest in alternatives such as Personal Sound Amplification Products (PSAPs). While PSAPs are not medical devices, they may help reduce listening effort in certain contexts, though supporting evidence remains limited. This study examined the short-term effects of bilateral PSAP use on listening effort using self-report measures and electroencephalography (EEG) recordings of alpha-band activity (8-12 Hz) in older adults with and without hearing loss. Twenty-five participants aged 60 to 87 years completed a hearing assessment and a phonological discrimination task under three signal-to-noise ratio (SNR) conditions during two counterbalanced sessions (unaided and aided). Results showed that PSAPs significantly reduced self-reported effort. Alpha activity in the left parietotemporal regions showed event-related desynchronization (ERD) during the task, reflecting brain engagement in response to speech in noise. In the unaided condition, alpha ERD weakened as SNR decreased, with activity approaching baseline. PSAP use moderated this effect, maintaining stronger ERD under the most challenging SNR condition. Reduced alpha ERD was associated with greater self-reported effort, suggesting neural and subjective measures reflect related dimensions of listening demand. These results suggest that even brief PSAP use can reduce perceived and neural markers of listening effort. While not a replacement for hearing aids, PSAPs may offer a means for easing cognitive load during effortful listening. ClinicalTrials.gov, NCT05076045, https://clinicaltrials.gov/study/NCT05076045.</p>","PeriodicalId":48678,"journal":{"name":"Trends in Hearing","volume":"29 ","pages":"23312165251375891"},"PeriodicalIF":3.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12413528/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145001725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Trends in HearingPub Date : 2025-01-01Epub Date: 2025-07-21DOI: 10.1177/23312165251359755
Larry E Humes, Sumitrajit Dhar, Jasleen Singh
{"title":"Some Considerations for the Use of the Abbreviated Profile of Hearing Aid Benefit (APHAB) as a Hearing-Aid Outcome Measure.","authors":"Larry E Humes, Sumitrajit Dhar, Jasleen Singh","doi":"10.1177/23312165251359755","DOIUrl":"10.1177/23312165251359755","url":null,"abstract":"<p><p>The Abbreviated Profile of Hearing Aid Benefit (APHAB) has been one of the most frequently used patient-reported outcome measures (PROMs) since its inception 30 years ago. For the APHAB, single-valued 95% critical differences have been presented for the identification and interpretation of meaningful benefits in research and in the clinic. A narrative literature review of studies that used the global APHAB score as a hearing-aid outcome measure showed that the average benefit varied directly with the average unaided baseline score for each measure. Next, data from 584 older adults enrolled in our recently completed randomized controlled hearing-aid trial were examined. The same dependence of benefit scores on unaided baseline scores was observed in these data. Regression to the mean made relatively minor contributions to the observed dependence of APHAB scores on baseline unaided scores. These results indicate that the application of a single value for the 95% critical difference is not valid for the interpretation of APHAB scores. Rather, baseline-specific benefit criteria are needed. Based on these results, baseline-specific Minimal Detectable Differences (MDDs; or 95% critical differences) and Minimal Clinically Important Differences (MCIDs) using both distribution-based and anchor-based approaches were generated for the APHAB-global score.</p>","PeriodicalId":48678,"journal":{"name":"Trends in Hearing","volume":"29 ","pages":"23312165251359755"},"PeriodicalIF":3.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12290275/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144683483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Integrating Audiological Datasets via Federated Merging of Auditory Profiles.","authors":"Samira Saak, Dirk Oetting, Birger Kollmeier, Mareike Buhl","doi":"10.1177/23312165251349617","DOIUrl":"10.1177/23312165251349617","url":null,"abstract":"<p><p>Audiological datasets contain valuable knowledge about hearing loss in patients, which can be uncovered using data-driven techniques. Our previous approach summarized patient information from one audiological dataset into distinct Auditory Profiles (APs). To obtain a better estimate of the audiological patient population, however, patient patterns must be analyzed across multiple, separated datasets, and finally, be integrated into a combined set of APs. This study aimed at extending the existing profile generation pipeline with an AP merging step, enabling the combination of APs from different datasets based on their similarity across audiological measures. The 13 previously generated APs (<i>N<sub>A</sub></i> = 595) were merged with 31 newly generated APs from a second dataset (<i>N<sub>B</sub></i> = 1,272) using a similarity score derived from the overlapping densities of common features across the two datasets. To ensure clinical applicability, random forest models were created for various scenarios, encompassing different combinations of audiological measures. A new set with 13 combined APs is proposed, providing separable profiles, which still capture detailed patient information from various test outcome combinations. The classification performance across these profiles is satisfactory. The best performance was achieved using a combination of loudness scaling, audiogram, and speech test information, while single measures performed worst. The enhanced profile generation pipeline demonstrates the feasibility of combining APs across datasets, which should generalize to all datasets and could lead to an interpretable global profile set in the future. The classification models maintain clinical applicability.</p>","PeriodicalId":48678,"journal":{"name":"Trends in Hearing","volume":"29 ","pages":"23312165251349617"},"PeriodicalIF":2.6,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12209579/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144530531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Trends in HearingPub Date : 2025-01-01Epub Date: 2025-05-29DOI: 10.1177/23312165251347130
Philip Reed, Joseph Paul Nemargut, Judith E Goldstein, Coral E Dirks, Yingzi Xiong
{"title":"Impact of Hearing Impairment on Independent Travel in Individuals With Normal Vision, Low Vision, and Blindness.","authors":"Philip Reed, Joseph Paul Nemargut, Judith E Goldstein, Coral E Dirks, Yingzi Xiong","doi":"10.1177/23312165251347130","DOIUrl":"10.1177/23312165251347130","url":null,"abstract":"<p><p>Individuals with dual sensory impairment (DSI) often have reduced independence in their daily activities. Vision impairment is consistently reported to play a more dominant role than hearing impairment on home-based daily living, while little is known regarding the relative impact of vision and hearing impairments on tasks such as independent travel that require interacting with more complex environments. To address this knowledge gap, we administered a semistructured survey in a convenience sample of 161 individuals with normal vision, low vision, or blindness, with or without hearing impairment. A combination of qualitative and quantitative approaches was used to analyze the data. Compared to normal vision, low vision and blind participants were significantly less likely to be frequent travelers. Low vision participants reported that vision impairment had a greater impact than hearing impairment on their travel independence, while blind participants reported hearing impairment to have a greater impact than blindness on their travel independence. The unique challenges in blind individuals were highlighted by their concerns on localizing dynamic sounds such as traffic during travel. Seventy percent of the hearing-impaired participants wore hearing aids and reported high utility for speech perception, but there was a significant reduction in the utility of hearing aids for sound localization especially for the blind participants. Our results reveal the interaction between vision and hearing impairments on independent travel and emphasize the need for an integrated rehabilitation approach for this population.</p>","PeriodicalId":48678,"journal":{"name":"Trends in Hearing","volume":"29 ","pages":"23312165251347130"},"PeriodicalIF":2.6,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12123108/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144175377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Trends in HearingPub Date : 2025-01-01Epub Date: 2025-05-29DOI: 10.1177/23312165251329791
Andrew J Byrne, Gerald Kidd
{"title":"Judging the Number and Gender of Talkers Present in an Auditory Scene Aided by Acoustic Beamforming.","authors":"Andrew J Byrne, Gerald Kidd","doi":"10.1177/23312165251329791","DOIUrl":"10.1177/23312165251329791","url":null,"abstract":"<p><p>The perceived numerosity of simultaneous, spatially separated speech sources was used to evaluate the effectiveness of triple beamformer processing, compared to that of both a single-channel beamformer and natural listening. Participants made judgments of the total number of talkers present in a simulated sound field and the gender composition of the talker group. The perceived numerosity was always underestimated for groups of more than three talkers. Performance with the triple beamformer was roughly equivalent to that of natural listening, including a beneficial effect of spatial separation of the sources in azimuth. The gender mix of the talker group also affected the numerosity judgments although the perceived gender ratio was generally accurate even when the total group count was underestimated. Time-reversing the speech resulted in lower numerosity judgements (increased error) under both natural and triple beamformer listening, suggesting an influence of linguistic processing on source numerosity judgments. Overall, factors that enhanced source segregation and speech stream coherence decreased errors in numerosity judgments. A stimulus-derived metric-the composite of glimpsed energy retained for all talkers in the sound field-was found to be a reasonably accurate predictor of the subjective numerosity judgments.</p>","PeriodicalId":48678,"journal":{"name":"Trends in Hearing","volume":"29 ","pages":"23312165251329791"},"PeriodicalIF":2.6,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12123112/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144175396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}