The human ability to continuously track dynamic environmental stimuli, in particular speech, is proposed profit from “entrainment” of endogenous neural oscillations, which involves phase reorganization such that “optimal” comes into line with temporally expected critical events, resulting improved processing. current experiment goes beyond previous work this domain by addressing two thus far unanswered questions. First, how general entrainment rhythms: Can oscillations be entrained temporal...

Significance Our sensory environment is teeming with complex rhythmic structure, but how do environmental rhythms (such as those present in speech or music) affect our perception? In a human electroencephalography study, we investigated auditory perception affected when brain (neural oscillations) synchronize the structure synthetic sounds that possess characteristics similar to speech. We found neural phase multiple frequency bands synchronized stimulus rhythm and interacted determine...

How we measure time and integrate temporal cues from different sensory modalities are fundamental questions in neuroscience. Sensitivity to a "beat" (such as that routinely perceived music) differs substantially between auditory visual modalities. Here examined beat sensitivity each modality, cross-modal influences, using functional magnetic resonance imaging (fMRI) characterize brain activity during perception of rhythms. In separate fMRI sessions, participants listened sequences or watched...

Language comprehension requires that single words be grouped into syntactic phrases, as in sentences are too many to memorize individually. In speech, acoustic and grouping patterns mostly align. However, when ambiguous allow for alternative patterns, comprehenders may form phrases contradict speech prosody. While delta-band oscillations known track prosody, we hypothesized linguistic bias can modulate the interpretational impact of prosody situations, which should surface chosen by differ...

Listeners show a remarkable ability to quickly adjust degraded speech input. Here, we aimed identify the neural mechanisms of such short-term perceptual adaptation. In sparse-sampling, cardiac-gated functional magnetic resonance imaging (fMRI) acquisition, human listeners heard and repeated back 4-band-vocoded sentences (in which temporal envelope acoustic signal is preserved, while spectral information highly degraded). Clear-speech trials were included as baseline. An additional fMRI...

Behaviorally relevant environmental stimuli are often characterized by some degree of temporal regularity. Dynamic attending theory provides a framework for explaining how perception stimulus events is affected the context within which they occur. However, precise neural implementation dynamic remains unclear. Here, we provide suggestion potential appealing to low-frequency oscillations. The current review will familiarize reader with basic theoretical tenets theory, and empirical work...

Healthy aging is accompanied by listening difficulties, including decreased speech comprehension, that stem from an ill-understood combination of sensory and cognitive changes. Here, we use electroencephalography to demonstrate auditory neural oscillations older adults entrain less firmly flexibly speech-paced (∼3 Hz) rhythms than younger adults' during attentive listening. These entrainment effects are distinct in magnitude origin the response sound per se. Non-entrained parieto-occipital...

Enhanced alpha power compared with a baseline can reflect states of increased cognitive load, for example, when listening to speech in noise. Can knowledge about "when" listen (temporal expectations) potentially counteract load and concomitantly reduce alpha? The current magnetoencephalography (MEG) experiment induced using an auditory delayed-matching-to-sample task 2 syllables S1 S2 presented speech-shaped Temporal expectation the occurrence was manipulated 3 different cue conditions:...

Neural activity in the auditory system synchronizes to sound rhythms, and brain-environment synchronization is thought be fundamental successful perception. Sound rhythms are often operationalized terms of sound's amplitude envelope. We hypothesized that - especially for music envelope might not best capture complex spectro-temporal fluctuations give rise beat perception synchronized neural activity. This study investigated (1) different musical features, (2) tempo-dependence...

OPINION article Front. Hum. Neurosci., 31 August 2012Sec. Speech and Language Volume 6 - 2012 | https://doi.org/10.3389/fnhum.2012.00250

In auditory cortex, activation and subsequent adaptation is strongest for regions responding best to a stimulated tone frequency less other frequencies. Previous attempts characterize the spread of neural in humans investigated cortex N1 component event-related potentials. Importantly, however, more recent studies animals show that response properties are not independent stimulation context. To link these findings human scalp potentials, we whether contextual factors acoustic stimulation,...

Neural oscillatory dynamics are a candidate mechanism to steer perception of time and temporal rate change. While oscillator models strongly supported by behavioral evidence, direct link neural oscillations entrainment has not yet been provided. In addition, it thus far remained unaddressed how context-induced illusory percepts coded for in perception. To investigate these questions, we used magnetoencephalography examined the that underpin pitch-induced Human participants listened...

A substantial body of prior research has focused on how older adults process and comprehend speech, whereas less attention been devoted to encode perceive naturalistic music. In the current study, we investigated whether neural tracking different musical features in music differs between age groups. Younger (both sexes) listened excerpts with tempi (1-4 Hz) while electroencephalography (EEG) was recorded. The results show an age-related enhancement responses sound onsets, suggesting a loss...

Three experiments evaluated an imputed pitch velocity model of the auditory kappa effect. Listeners heard 3-tone sequences and judged timing middle (target) tone relative to 1st 3rd (bounding) tones. Experiment 1 held constant but varied time (T) interval between bounding tones (T = 728, 1,000, or 1,600 ms) in order establish baseline performance levels for 3 values T. Experiments 2 combined T tested with a manipulation create fast (8 semitones/728 ms), medium semitones/1,000 slow...

Stimulus-specific adaptation is the phenomenon whereby neural response magnitude decreases with repeated stimulation. Inconsistencies between recent nonhuman animal recordings and computational modeling suggest dynamic influences on stimulus-specific adaptation. The present human electroencephalography (EEG) study investigates potential role of statistical context in dynamically modulating by examining auditory cortex-generated N1 P2 components. As previous studies adaptation, listeners were...

Abstract Temporal expectations enhance neural encoding precision, reflected in optimized alignment of slow oscillatory phase, and facilitate subsequent stimulus processing. If an event's exact occurrence time is unknown, temporal arise solely from the passage time. Here, we show that this specific type expectation also phase organization. While undergoing magnetoencephalography, participants performed auditory‐delayed matching‐to‐sample task with two syllables (S1, S2). Critically, S1‐onset...

Rhythmic structure in speech, music, and other auditory signals helps us track, anticipate, understand the sounds our environment. The dynamic attending framework proposes that biological systems possess internal rhythms, generated via oscillatory mechanisms, synchronize with (entrain to) rhythms external world. Here, we focused on two properties of oscillators: preferred rate, default rate an oscillator absence any input, flexibility, oscillator's ability to adapt changes rhythmic context....

When sensory input conveys rhythmic regularity, we can form predictions about the timing of upcoming events. Although rhythm processing capacities differ considerably between individuals, these differences are often obscured by participant- and trial-level data averaging procedures in M/EEG research. Here, systematically assessed neurophysiological variability displayed individuals listening to isochronous (1.54 Hz) equitone sequences interspersed with unexpected (amplitude-attenuated)...