A Silent Disco: Differential Effects of Beat-based and Pattern-based Temporal Expectations on Persistent Entrainment of Low-frequency Neural Oscillations

Journal of Cognitive Neuroscience, Journal Year: 2023, Volume and Issue: 35(6), P. 990 - 1020

Published: Jan. 1, 2023

The brain uses temporal structure in the environment, like rhythm music and speech, to predict timing of events, thereby optimizing their processing perception. Temporal expectations can be grounded different aspects input structure, such as a regular beat or predictable pattern. One influential account posits that generic mechanism underlies beat-based pattern-based expectations, namely, entrainment low-frequency neural oscillations rhythmic input, whereas other accounts assume underlying mechanisms. Here, we addressed this outstanding issue by examining EEG activity behavioral responses during silent periods following auditory sequences. We measured outlasting rhythms both avoid confounding analyses with evoked responses, directly test whether persist beyond stimulation, predicted theories. To properly disentangle which often occur simultaneously, used non-isochronous beat, pattern, random timing. In Experiment 1 (n = 32), affected ratings probe events for two beat-cycles after end rhythm. effects reflected one interval. 2 27), using EEG, found enhanced spectral power at frequency sequences listening silence. For sequences, pattern-specific was present listening, but not Moreover, difference signal Finally, show how multivariate pattern decoding multiscale entropy-measures sensitive non-oscillatory components signal-can expectations. Together, our results suggest form may affect associated climbing differentially

Language: Английский

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ROSE: A neurocomputational architecture for syntax

Journal of Neurolinguistics, Journal Year: 2023, Volume and Issue: 70, P. 101180 - 101180

Published: Nov. 21, 2023

Language: Английский

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Neural phase angle from two months when tracking speech and non-speech rhythm linked to language performance from 12 to 24 months

Brain and Language, Journal Year: 2023, Volume and Issue: 243, P. 105301 - 105301

Published: July 1, 2023

Atypical phase alignment of low-frequency neural oscillations to speech rhythm has been implicated in phonological deficits developmental dyslexia. could thus also characterize infants at risk for later language difficulties. Here, we investigate phase-language mechanisms a neurotypical infant sample. 122 two-, six- and nine-month-old were played non-speech rhythms while EEG was recorded longitudinal design. The infants' aligned consistently the stimuli, with group-level convergence towards common phase. Individual related subsequent measures acquisition up 24 months age. Accordingly, individual differences are cortical tracking auditory audiovisual infancy, an automatic mechanism. Automatic rhythmic eventually serve as biomarkers, identifying at-risk enabling intervention earliest stages development.

Language: Английский

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Decoupling Measurements and Processes: On the Epiphenomenon Debate Surrounding Brain Oscillations in Field Potentials

Published: April 9, 2024

Various theories in neuroscience maintain that brain oscillations have an important role neuronal computation, but opposing views claim these macroscale dynamics are “exhaust fumes” of more relevant processes. Here, we argue the question whether epiphenomenal is ill-defined and cannot be productively resolved without further refinement. Toward end, outline a conceptual framework clarifies dispute along two axes: first, introduce distinction between measurement process to categorize theoretical status electrophysiology terms such as local field potentials oscillations. Second, consider relationships disambiguated terms, evaluating based on experimental computational evidence there exist causal or inferentially useful links them. This decomposes epiphenomenalism into set empirically tractable alternatives. Finally, demarcate conceptually distinct entity where either processes measurements exhibit periodic behavior, suggest oscillatory orchestrate neural computation by implementing temporal, spatial, frequency syntax. Overall, our reframed evaluation supports view electric fields—oscillating not—are causally relevant, their associated signals informative. More broadly, offer vocabulary starting point for scientific exchanges utility biological they capture.

Language: Английский

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Reliability of Neural Entrainment in the Human Auditory System

Journal of Neuroscience, Journal Year: 2021, Volume and Issue: 42(5), P. 894 - 908

Published: Dec. 10, 2021

Auditory stimuli are often rhythmic in nature. Brain activity synchronizes with auditory rhythms via neural entrainment, and entrainment seems to be beneficial for perception. However, it is not clear what extent the system reliable over time, which a necessary prerequisite targeted intervention. The current study aimed establish reliability of time predict individual differences perception from associated activity. Across two different sessions, human listeners (21 females, 17 males) detected silent gaps presented at phase locations 2 Hz frequency-modulated (FM) noise while EEG was recorded. As expected, entrained by FM noise. Moreover, gap detection sinusoidally modulated into fell. Critically, both strength as well modulation performance stimulus rhythm were highly sessions. predictable pregap alpha amplitude. Our results demonstrate that resulting behavioral delta nonentrained oscillatory contribute near-threshold latter suggests improving might require simultaneously targeting brain rhythm. SIGNIFICANCE STATEMENT Neural sounds important successful A natural hypothesis example, stimulation, should benefit intervention, has been established. Using electroencephalogram recordings, we stimulus-induced time. moment-by-moment fluctuations best predicted This work

Language: Английский

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tACS phase-specifically biases brightness perception of flickering light

Brain stimulation, Journal Year: 2022, Volume and Issue: 15(1), P. 244 - 253

Published: Jan. 1, 2022

BackgroundVisual phenomena like brightness illusions impressively demonstrate the highly constructive nature of perception. In addition to physical illumination, subjective experience is related temporal neural dynamics in visual cortex.ObjectiveHere, we asked whether biasing pattern excitability cortex by transcranial alternating current stimulation (tACS) modulates perception concurrent rhythmic stimuli.MethodsParticipants performed a discrimination task two flickering lights, one which was targeted same-frequency electrical at varying phase shifts. tACS applied with an occipital and periorbital active control montage, based on simulations currents using finite element head models.ResultsExperimental results reveal that flicker modulated dependent shift between sensory stimulation, solely under tACS. Phase-specific modulatory effects were flicker-evoked stability tACS-targeted frequency, recorded prior stimulation. Further, optimal timing application leading enhanced correlated delay cortical response.ConclusionsOur corroborate role temporally coordinated activity for input humans. behavioral modulations emphasize its efficacy transfer perceptually relevant information cortex. These findings provide important step towards understanding basis further confirm as tool advancing controlled behavior.

Language: Английский

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Distracting linguistic information impairs neural tracking of attended speech

Current Research in Neurobiology, Journal Year: 2022, Volume and Issue: 3, P. 100043 - 100043

Published: Jan. 1, 2022

Listening to speech is difficult in noisy environments, and even harder when the interfering noise consists of intelligible as compared unintelligible sounds. This suggests that competing linguistic information interferes with neural processing target speech. Interference could either arise from a degradation representation speech, or increased distracting enters competition We tested these alternative hypotheses using magnetoencephalography (MEG) while participants listened clear presence noise-vocoded Crucially, distractors were initially but became more after short training session. Results showed comprehension was poorer than before training. The tracking delta range (1-4 Hz) reduced strength distractor. In contrast, signals not significantly modulated by intelligibility. These results suggest degrades carried oscillations.

Language: Английский

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Rhythmic modulation of prediction errors: A top-down gating role for the beta-range in speech processing

PLoS Computational Biology, Journal Year: 2023, Volume and Issue: 19(11), P. e1011595 - e1011595

Published: Nov. 7, 2023

Natural speech perception requires processing the ongoing acoustic input while keeping in mind preceding one and predicting next. This complex computational problem could be handled by a dynamic multi-timescale hierarchical inferential process that coordinates information flow up down language network hierarchy. Using predictive coding model (Precoss-β) identifies online individual syllables from continuous speech, we address advantage of rhythmic modulation flows, whether beta oscillations optimal for this. In model, consistent with experimental data, theta low-gamma neural frequency scales ensure syllable-tracking phoneme-level encoding, respectively, rhythm is associated processes. We show alternation bottom-up top-down regimes improves syllable recognition, efficacy reached when regimes, via oscillating prediction error precisions, range (around 20–30 Hz). These results not only demonstrate up- down-going information, but also low-beta given sensory analysis at scales. While specific to processing, notion alternating processes multiplexing might generalize other cognitive architectures.

Language: Английский

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Rhythmic Entrainment Echoes in Auditory Perception

Journal of Neuroscience, Journal Year: 2023, Volume and Issue: 43(39), P. 6667 - 6678

Published: Aug. 21, 2023

Rhythmic entrainment echoes-rhythmic brain responses that outlast rhythmic stimulation-can demonstrate endogenous neural oscillations entrained by the stimulus rhythm. Here, we tested for such echoes in auditory perception. Participants detected a pure tone target, presented at variable delay after another was rhythmically modulated amplitude. In four experiments involving 154 human (female and male) participants, (1) which rate produces strongest echo and, inspired tonotopical organization of system findings nonhuman primates, (2) whether these are organized according to sound frequency. We found 6 8 Hz stimulation, respectively. The best moments target detection (in phase or antiphase with preceding rhythm) depended on frequencies entraining stimuli matched, is line organization. However, same experimental condition, were not always consistent across experiments. provide speculative explanation differences relies notion repetition-related adaptation might exercise competing opposite influences Together, find perception seem more complex than those predicted from initial theories entrainment.

Language: Английский

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Processes and measurements: a framework for understanding neural oscillations in field potentials

Trends in Cognitive Sciences, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

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