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

Frontiers in Neuroscience, Journal Year: 2022, Volume and Issue: 16

Published: Dec. 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.

Language: Английский

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Vocal Music Listening Enhances Poststroke Language Network Reorganization

eNeuro, Journal Year: 2021, Volume and Issue: 8(4), P. ENEURO.0158 - 21.2021

Published: June 17, 2021

Abstract Listening to vocal music has been recently shown improve language recovery in stroke survivors. The neuroplasticity mechanisms supporting this effect are, however, still unknown. Using data from a three-arm, single-blind, randomized controlled trial including acute patients ( N = 38) and 3 month follow-up, we set out compare the effects of daily listening self-selected music, instrumental audiobooks on both brain activity structural connectivity network. deterministic tractography, show that intervention induced an enhancement microstructural properties left frontal aslant tract (FAT) for group compared with audiobook group. Importantly, increase strength FAT correlated improved skills. Analyses stimulus-specific activation changes showed exhibited increased activations termination points during poststroke stage. FAT. These results suggest beneficial are underpinned by within network extend our understanding music-based interventions rehabilitation.

Language: Английский

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From Perception to Pleasure

Oxford University Press eBooks, Journal Year: 2023, Volume and Issue: unknown

Published: Nov. 23, 2023

Abstract How does perception of abstract tonal patterns—music—lead to the pleasure we experience from these sounds? The answer presented in this book is that music arises interactions between cortical loops enable processing sound patterns and subcortical circuits responsible for reward valuation. auditory cortex its ventral-stream connections encode acoustical features their relationships, maintain them working memory, form internal representations statistical which predictions are made about how evolve time. Disruption pathway leads amusia. dorsal stream allows sensory-motor transformations, production, metrical representation, leading when events will occur. These predictive processes play a central role creating expectancies musical transmitted dopaminergic system, where hedonic responses generated according well an event fits with predictions. linked balance predictability surprise patterns. perceptual systems anhedonia. Engagement system also related movement vocal cues, social factors, preference, emotion regulation.

Language: Английский

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Focal Brain Lesions Causing Acquired Amusia Map to a Common Brain Network

Journal of Neuroscience, Journal Year: 2024, Volume and Issue: 44(15), P. e1922232024 - e1922232024

Published: Feb. 29, 2024

Music is a universal human attribute. The study of amusia, neurologic music processing deficit, has increasingly elaborated our view on the neural organization musical brain. However, lesions causing amusia occur in multiple brain locations and often also cause aphasia, leaving distinct networks for unclear. Here, we utilized lesion network mapping to identify these networks. A systematic literature search was carried out all published case reports lesion-induced amusia. reproducibility specificity identified were then tested an independent prospective cohort 97 stroke patients (46 female 51 male) with repeated structural imaging, specifically assessed both perception language abilities. Lesion heterogeneous but connected common regions, including bilateral temporoparietal insular cortices, precentral gyrus, cingulum. In cohort, mapped network, centering right superior temporal cortex clearly from causally associated aphasia. Lesion-induced longitudinal effects circuit confirmed as reduction gray white matter volume, which correlated severity We demonstrate that despite heterogeneity disrupting processing, there network. These results provide evidence substrate differentiating music-related functions language, providing testable target noninvasive stimulation treat

Language: Английский

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Musicianship and prominence of inter-hemispheric connectivity determine two different pathways to atypical language dominance

Journal of Neuroscience, Journal Year: 2024, Volume and Issue: 44(37), P. e2430232024 - e2430232024

Published: Aug. 19, 2024

During infancy and adolescence, language develops from a predominantly interhemispheric control—through the corpus callosum (CC)—to intrahemispheric control, mainly subserved by left arcuate fasciculus (AF). Using multimodal neuroimaging, we demonstrate that human left-handers (both male female) with an atypical lateralization show rightward participation of areas auditory cortex to inferior frontal when contrasting speech tone perception enhanced anatomical functional connectivity. Crucially, musicianship determines two different structural pathways this outcome. Nonmusicians present relation between underdevelopment across anterior AF, hinting at dysregulation ontogenetic shift brain. Musicians reveal alternative pathway related overdevelopment posterior CC cortex. We discuss heterogeneity in reaching relevance early musical training altering normal development cognitive functions.

Language: Английский

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Pearls & Oy-sters: Isolated Acquired Amusia in a Patient With Right Temporal Stroke

Neurology, Journal Year: 2025, Volume and Issue: 104(5)

Published: Jan. 31, 2025

Strokes in the right temporal lobe are known to cause acquired amusia, or deficits music processing, which can be formally assessed using online version of Montreal Battery Evaluation Amusia (MBEA). Patients with amusia most often present not only but also other neurologic symptoms, such as aphasia, neglect, memory issues. We report a case 39-year-old man who initially presented for follow-up after single seizure episode. Two years before seizure, patient experienced an episode headache, nausea, and vomiting, he developed difficulty appreciating carrying tune, something had never competent trumpet player singer. An MRI scan performed his revealed encephalomalacia gliosis within lateral areas hemosiderin deposition, suggesting that 2 ago was stroke. His standard examination normal including score 30/30 on Cognitive Assessment. On MBEA, scored 66.7% off-tune test, 87.5% off-beat 70.8% out-of-key consistent diagnosis amusia. This highlights importance eliciting less common isolated symptoms patients otherwise examination, musical symptoms. highlight utility tools MBEA document severity potentially follow patients' progress they recover.

Language: Английский

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The Microstructural Plasticity of the Arcuate Fasciculus Undergirds Improved Speech in Noise Perception in Musicians

Cerebral Cortex, Journal Year: 2021, Volume and Issue: 31(9), P. 3975 - 3985

Published: Feb. 26, 2021

Musical training is thought to be related improved language skills, for example, understanding speech in background noise. Although studies have found that musicians and nonmusicians differed morphology of bilateral arcuate fasciculus (AF), none has associated such white matter features with speech-in-noise (SIN) perception. Here, we tested both SIN the diffusivity AF segments using diffusion tensor imaging. Compared nonmusicians, had higher fractional anisotropy (FA) right direct lower radial left anterior AF, which correlated performance. The FA-based laterality index showed stronger lateralization posterior than predicting accuracy. Furthermore, hemodynamic activity superior temporal gyrus obtained during a task played full mediation role explaining contribution on performance, therefore links training-related plasticity, brain hemodynamics, perception ability. Our findings provide evidence differential microstructural plasticity may serve as neural foundation cross-domain transfer effect musical experience amid competing

Language: Английский

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Assessing Consciousness in Patients with Disorders of Consciousness Using a Musical Stimulation Paradigm and Verifiable Criteria

IEEE Transactions on Neural Systems and Rehabilitation Engineering, Journal Year: 2024, Volume and Issue: 32, P. 2971 - 2982

Published: Jan. 1, 2024

Numerous studies have shown that musical stimulation can activate corresponding functional brain areas. Electroencephalogram (EEG) activity during be used to assess the consciousness states of patients with disorders (DOC). In this study, a paradigm and verifiable criteria were for assessment. Twenty-nine participants (13 healthy subjects, 6 in minimally conscious state (MCS) 10 vegetative (VS)) recruited, EEG signals collected while listened preferred relaxing music. Fusion features based on differential entropy (DE), common spatial pattern (CSP), EEG-based network (ENP) extracted from signals, convolutional neural network-long short-term memory (CNN-LSTM) model was employed classify music.The results showed average classification accuracy subjects reached 85.58%. For two MCS group, accuracies 78.18% 66.14%, they diagnosed emergence (EMCS) months later. The three VS group 58.18%, 64.32% 62.05%, showing slight increases scale scores. Our study suggests could an effective method detection, significant diagnostic implications DOC.

Language: Английский

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Frontoparietal network topology as a neural marker of musical perceptual abilities

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Sept. 17, 2024

Language: Английский

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Resting‐state language network neuroplasticity in post‐stroke music listening: A randomized controlled trial

European Journal of Neuroscience, Journal Year: 2021, Volume and Issue: 54(11), P. 7886 - 7898

Published: Nov. 12, 2021

Abstract Recent evidence suggests that post‐stroke vocal music listening can aid language recovery, but the network‐level functional neuroplasticity mechanisms of this effect are unknown. Here, we sought to determine if improved recovery observed after is driven by changes in longitudinal resting‐state connectivity within network. Using data from a single‐blind randomized controlled trial on stroke patients ( N = 38), compared effects daily self‐selected music, instrumental and audio books network their correlation skills verbal memory during first 3 months post‐stroke. From acute 3‐month stage, groups increased between cluster comprising left inferior parietal areas more than book group. However, increase correlated with only group cluster. This study shows promotes inducing Our results conform variable neurodisplacement theory underpinning aphasia recovery.

Language: Английский

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