Hemispheric asymmetries for music and speech: Spectrotemporal modulations and top-down influences

Frontiers in Neuroscience, Год журнала: 2022, Номер 16

Опубликована: Дек. 20, 2022

Hemispheric asymmetries in auditory cognition have been recognized for a long time, but their neural basis is still debated. Here I focus on specialization processing of speech and music, the two most important communication systems that humans possess. A great deal evidence from lesion studies functional imaging suggests aspects music linked to pitch patterns depend more right than left networks. complementary temporal resolution has suggested These diverse findings can be integrated within context spectrotemporal modulation framework, which developed as way characterize efficient neuronal encoding complex sounds. Recent show degradation spectral impairs melody perception not content, whereas opposite effect. Neural responses cortex those are modulations, respectively. provide unifying model understand terms sensitivity acoustical features sounds humans. However, this explanation does account shift function learning, attention, or other top-down factors. Therefore, it seems likely arise both bottom-up modulations influences coming hierarchically higher components system. Such interactions understood predictive coding mechanisms perception.

Язык: Английский

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Attentional Modulation of the Cortical Contribution to the Frequency-Following Response Evoked by Continuous Speech

Journal of Neuroscience, Год журнала: 2023, Номер 43(44), С. 7429 - 7440

Опубликована: Окт. 4, 2023

Selective attention to one of several competing speakers is required for comprehending a target speaker among other voices and successful communication with them. It moreover has been found involve the neural tracking low-frequency speech rhythms in auditory cortex. Effects selective have also subcortical activities, particular regarding frequency-following response related fundamental frequency (speech-FFR). Recent investigations have, however, shown that speech-FFR contains cortical contributions as well. remains unclear whether these are modulated by attention. Here we used magnetoencephalography assess attentional modulation speech-FFR. We presented both male female participants two signals analyzed responses during switching between speakers. Our findings revealed robust contribution speech-FFR: were higher when was attended than they ignored. that, regardless attention, voice lower elicited larger frequency. results show does not only occur subcortically but extends cortex

Язык: Английский

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EEG-based cross-subject passive music pitch perception using deep learning models

Cognitive Neurodynamics, Год журнала: 2025, Номер 19(1)

Опубликована: Янв. 3, 2025

Язык: Английский

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An objective and automatic evaluation method for vocoder algorithms in music note perception based on electroencephalogram and deep learning

Applied Acoustics, Год журнала: 2025, Номер unknown, С. 110635 - 110635

Опубликована: Апрель 1, 2025

Язык: Английский

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Neural speech tracking in a virtual acoustic environment: audio-visual benefit for unscripted continuous speech

Frontiers in Human Neuroscience, Год журнала: 2025, Номер 19

Опубликована: Апрель 9, 2025

The audio-visual benefit in speech perception-where congruent visual input enhances auditory processing-is well-documented across age groups, particularly challenging listening conditions and among individuals with varying hearing abilities. However, most studies rely on highly controlled laboratory environments scripted stimuli. Here, we examine the using unscripted, natural from untrained speakers within a virtual acoustic environment. Using electroencephalography (EEG) cortical tracking, assessed neural responses audio-visual, audio-only, visual-only, masked-lip to isolate role of lip movements. Additionally, analysed individual differences features speakers, including pitch, jitter, lip-openness, explore their influence tracking benefit. Results showed significant enhancement background noise, condition performing similarly audio-only condition, emphasizing importance movements adverse situations. Our findings reveal feasibility naturalistic stimuli underscore impact speaker characteristics integration real-world contexts.

Язык: Английский

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Neural entrainment to pitch changes of auditory targets in noise

NeuroImage, Год журнала: 2025, Номер unknown, С. 121270 - 121270

Опубликована: Май 1, 2025

Язык: Английский

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Episodic long-term memory formation during slow-wave sleep

eLife, Год журнала: 2023, Номер 12

Опубликована: Июль 24, 2023

We are unresponsive during slow-wave sleep but continue monitoring external events for survival. Our brain wakens us when danger is imminent. If non-threatening, our might store them later consideration to improve decision-making. To test this hypothesis, we examined whether novel vocabulary consisting of simultaneously played pseudowords and translation words encoded/stored sleep, which neural-electrical facilitate encoding/storage. An algorithm brain-state-dependent stimulation selectively targeted word pairs peaks or troughs. Retrieval tests were given 12 36 hr later. These required decisions regarding the semantic category previously sleep-played pseudowords. The influenced awake decision-making later, if words' linguistic processing raised neural complexity. semantic-associative encoding was supported by increased theta power ensuing peak. Fast-spindle ramped up a second peak likely aiding consolidation. Hence, new stored days

Язык: Английский

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Episodic long-term memory formation during slow-wave sleep

eLife, Год журнала: 2024, Номер 12

Опубликована: Апрель 25, 2024

We are unresponsive during slow-wave sleep but continue monitoring external events for survival. Our brain wakens us when danger is imminent. If non-threatening, our might store them later consideration to improve decision-making. To test this hypothesis, we examined whether novel vocabulary consisting of simultaneously played pseudowords and translation words encoded/stored sleep, which neural-electrical facilitate encoding/storage. An algorithm brain-state-dependent stimulation selectively targeted word pairs peaks or troughs. Retrieval tests were given 12 36 hr later. These required decisions regarding the semantic category previously sleep-played pseudowords. The influenced awake decision-making later, if words’ linguistic processing raised neural complexity. semantic-associative encoding was supported by increased theta power ensuing peak. Fast-spindle ramped up a second peak likely aiding consolidation. Hence, new stored days

Язык: Английский

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Neural encoding of melodic expectations in music across EEG frequency bands

European Journal of Neuroscience, Год журнала: 2024, Номер unknown

Опубликована: Окт. 29, 2024

Abstract The human brain tracks regularities in the environment and extrapolates these to predict future events. Prior work on music cognition suggests that low‐frequency (1–8 Hz) activity encodes melodic predictions beyond stimulus acoustics. Building this work, we aimed disentangle frequency‐specific neural dynamics linked prediction uncertainty (modelled as entropy) error surprisal) for temporal (note onset) content pitch) information. By using multivariate response function (TRF) models, re‐analysed electroencephalogram (EEG) from 20 subjects (10 musicians) who listened Western tonal music. Our results show expectation metrics improve EEG reconstruction accuracy all frequency bands below gamma range (< 30 Hz). Crucially, found entropy contributed more strongly enhancement compared surprisal bands. Additionally, encoding of temporal, but not content, information was limited low frequencies, rather it extended higher frequencies (> 8 An analysis TRF weights revealed predictability a note (entropy may be encoded delta‐ (1–4 beta‐band (12–30 prior stimulus, suggesting associate with predictions. Strikingly, also expectations selectively enhanced beta band musicians, alpha (8–12 non‐musicians, musical expertise influences underlying predictive processing cognition.

Язык: Английский

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Attentional modulation of the cortical contribution to the frequency-following response evoked by continuous speech

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2023, Номер unknown

Опубликована: Июль 4, 2023

Abstract Selective attention to one of several competing speakers is required for comprehending a target speaker amongst other voices and successful communication with them. has been found involve the neural tracking low-frequency speech rhythms in auditory cortex. Effects selective have also subcortical activities, particular regarding high-frequency response at fundamental frequency speech, speech-FFR. Recent investigations have, however, shown that speech-FFR contains cortical contributions as well. It remains unclear whether these are modulated by attention. Here we employed magnetoencephalography (MEG) assess attentional modulation We presented participants two signals analyzed responses during switching between speakers. Our findings revealed robust contribution speech-FFR: were higher when was attended than they ignored. that, regardless attention, voice lower elicited larger frequency. results show does not only occur subcortically but extends cortex

Язык: Английский

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