Exploring Relevant Features for EEG-Based Investigation of Sound Perception in Naturalistic Soundscapes

eNeuro, Год журнала: 2025, Номер unknown, С. ENEURO.0287 - 24.2024

Опубликована: Янв. 3, 2025

A comprehensive analysis of everyday sound perception can be achieved using Electroencephalography (EEG) with the concurrent acquisition information about environment. While extensive research has been dedicated to speech perception, complexities auditory within environments, specifically types and key features extract, remain less explored. Our study aims systematically investigate relevance different feature categories: discrete sound-identity markers, general cognitive state information, acoustic representations, including onset, envelope, mel-spectrogram. Using continuous data analysis, we contrast in terms their predictive power for unseen thus distinct contributions explaining neural data. For this, analyse from a complex audio-visual motor task naturalistic soundscape. The results demonstrated that sets explain most variability were combination highly detailed description specific onsets. Furthermore, it showed established applied soundscapes. Crucially, outcome hinged on excluding periods devoid onsets case features. highlights importance comprehensively describe soundscape, nonacoustic aspects, fully understand dynamics situations. This approach serve as foundation future studies aiming natural settings. Significance Statement is an important step our broader endeavor, which life. Although conducted stationary setting, this provides foundational insights into necessary environmental obtain responses. We delved various features, labeling, goal refining models related perception. findings particularly highlight need thorough considerations across contexts, laboratory settings mobile EEG technologies, paves way investigations more advancing field neuroscience.

Язык: Английский

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Neural speech tracking contribution of lip movements predicts behavioral deterioration when the speaker's mouth is occluded

eNeuro, Год журнала: 2025, Номер unknown, С. ENEURO.0368 - 24.2024

Опубликована: Янв. 16, 2025

Observing lip movements of a speaker facilitates speech understanding, especially in challenging listening situations. Converging evidence from neuroscientific studies shows stronger neural responses to audiovisual stimuli compared audio-only stimuli. However, the interindividual variability this contribution movement information and its consequences on behavior are unknown. We analyzed source-localized magnetoencephalographic (MEG) 29 normal-hearing participants (12 female) speech, both with without wearing surgical face mask, presence or absence distractor speaker. Using temporal response functions (TRFs) quantify tracking, we show that are, general, enhanced when is challenging. After controlling for acoustics, contribute particularly present. extent visual tracking varied greatly among participants. Probing behavioral relevance, demonstrate individuals who higher terms drop comprehension an increase perceived difficulty mouth occluded by mask. By contrast, no effect was found not occluded. provide novel insights how varies revealing negative absent. Our results also offer potential implications objective assessments perception. Significance Statement In complex auditory environments, simultaneous conversations pose challenge comprehension. investigated level, aid such situations what observing enhances rely more deterioration wears Remarkably, case mask worn findings reveal differences applications

Язык: Английский

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Interpersonal synchronization as an objective measure of listening engagement

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2025, Номер unknown

Опубликована: Фев. 26, 2025

Abstract Listening engagement plays a crucial role in effective communication and knowledge transfer, reflecting state of deep absorption an auditory stimulus. The available behavioral assessments listening are limited capturing its multidimensional nature. Measuring objectively using brain body signals is compelling alternative. In particular, interpersonal synchronization—observed through synchronized physiological responses among listeners—may offer promising objective measure. this study, we examined synchronization activity, heart rate, electrodermal activity between participants while they listened to engaging non-engaging stories. Subjective ratings were collected as ground truth reference. Results showed higher across all modalities when stories compared ones, with significant correlations measures subjective engagement. These results confirm that may be reliable, marker We anticipate these will provide powerful framework for future research relevant domains, including education, audiology, science, enable impactful real-world applications, such automatically tracking audience entertainment, broader societal contexts. Significance Statement the first direct empirical evidence serves robust reliable Using novel experimental paradigm ecologically valid stimuli, demonstrate heightened leads increased neural listeners, disengagement reduces it. This measure significantly correlates established assessments, validating relevance reliability. Our innovative approach offers domains (education, audiology science) enables automatic domains.

Язык: Английский

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Resilience and vulnerability of neural speech tracking after hearing restoration

Communications Biology, Год журнала: 2025, Номер 8(1)

Опубликована: Март 1, 2025

The role of early auditory experience in the development neural speech tracking remains an open question. To address this issue, we measured children with or without functional hearing during their first year life after was restored cochlear implants (CIs), as well controls (HC). Neural CIs is unaffected by absence perinatal experience. CI users and HC exhibit a similar magnitude at short timescales brain activity. However, delayed users, its timing depends on age restoration. Conversely, longer timescales, dampened participants using CIs, thereby accounting for comprehension deficits. These findings highlight resilience sensory processing while also demonstrating vulnerability higher-level to lack shows that phase loss affects differently. Tracking present but weaker ones, impacting comprehension.

Язык: Английский

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Neural tracking of natural speech: an effective marker for post-stroke aphasia

Brain Communications, Год журнала: 2025, Номер 7(2)

Опубликована: Янв. 1, 2025

Abstract After a stroke, approximately one-third of patients suffer from aphasia, language disorder that impairs communication ability. Behavioural tests are the current standard to detect but they time-consuming, have limited ecological validity and require active patient cooperation. To address these limitations, we tested potential EEG-based neural envelope tracking natural speech. The technique investigates response temporal speech, which is critical for speech understanding by encompassing cues detecting segmenting linguistic units (e.g. phrases, words phonemes). We recorded EEG 26 individuals with aphasia in chronic phase after stroke (>6 months post-stroke) 22 healthy controls while listened 25-min story. quantified broadband frequency range as well delta, theta, alpha, beta gamma bands using mutual information analyses. Besides group differences measures, also its suitability at individual level support vector machine classifier. further investigated reliability required recording length accurate detection. Our results showed had decreased encoding compared broad, theta bands, aligns assumed role auditory processing Neural effectively captured level, classification accuracy 83.33% an area under curve 89.16%. Moreover, demonstrated high-accuracy detection can be achieved time-efficient (5–7 min) highly reliable manner (split-half correlations between R = 0.61 0.96 across bands). In this study, identified specific characteristics impaired holding promise biomarker condition. Furthermore, demonstrate discriminate high accuracy, manner. findings represent significant advance towards more automated, objective ecologically valid assessments impairments aphasia.

Язык: Английский

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