Multiple brain signatures of integration in the comprehension of degraded speech

Obleser, Jonas; Kotz, Sonja A.

doi:10.1016/j.neuroimage.2010.12.020

Cited by 133 publications

(140 citation statements)

References 73 publications

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“…an incoming word), matches the contents of top-down pre-activated memory information (Herrmann, Munk and Engel, 2004). Additionally, increased gamma power during sentence processing has been hypothesized to reflect the facilitated integration of high-cloze sentence final words into sentential meaning (Obleser & Kotz, 2011). In line with this, a recent account on the role of gamma activity in language comprehension proposes that gamma activity during language comprehension reflects an index of how well the actual (speech) input matches a lexical item (in long-term memory) that has been pre-activated as a prediction of the upcoming linguistic input.…”

Section: Discussionmentioning

confidence: 99%

Alpha and gamma band oscillations index differential processing of acoustically reduced and full forms

Drijvers

Mulder²,

Ernestus

2016

Brain and Language

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Reduced forms like yeshay for yesterday often occur in conversations. Previous behavioral research reported a processing advantage for full over reduced forms. The present study investigated whether this processing advantage is reflected in a modulation of alpha (8)(9)(10)(11)(12) Hz) and gamma (30+ Hz) band activity. In three electrophysiological experiments, participants listened to full and reduced forms in isolation (Experiment 1), sentence-final position (Experiment 2), or mid-sentence position (Experiment 3). Alpha power was larger in response to reduced forms than to full forms, but only in Experiments 1 and 2. We interpret these increases in alpha power as reflections of higher auditory cognitive load. In all experiments, gamma power only increased in response to full forms, which we interpret as showing that lexical activation spreads more quickly through the semantic network for full than for reduced forms. These results confirm a processing advantage for full forms, especially in non-medial sentence position.3

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Section: Discussionmentioning

confidence: 99%

Alpha and gamma band oscillations index differential processing of acoustically reduced and full forms

Drijvers

Mulder²,

Ernestus

2016

Brain and Language

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“…The auditory induced response of the brain has been studied with specific stimulus types such as perturbed and unperturbed sequences of pure tones [6,7,8,9], repeated identical words [10], targeted words in specifically designed sentences [11], and repeating modified and unmodified sentences (changing the pitch of the last word) [12,13]. For example, the gamma band is activated in response to pure-tones with temporal perturbations [6], it is also affected when subjects are presented with different types of keywords in sentences [11], and an increase in 40 Hz power has been observed in response to standard but not deviant repeating words [10].…”

Section: Introductionmentioning

confidence: 99%

“…For example, the gamma band is activated in response to pure-tones with temporal perturbations [6], it is also affected when subjects are presented with different types of keywords in sentences [11], and an increase in 40 Hz power has been observed in response to standard but not deviant repeating words [10]. In all these studies, specific presentation protocols were used to generate an attention or cognitive related response and aim to test quite specific hearing tasks and are not usually easy to reproduce.…”

Section: Introductionmentioning

confidence: 99%

“…As mentioned before, there are a limited number of studies on the brain's response to normal speech such as words and sentences [10,12,13,11,19,20,21]. In addition, not all of these studies target the induced response but rather focus on the evoked response to these stimuli.…”

Section: Introductionmentioning

confidence: 99%

“…For example, time-frequency analyses have been carried out using Fourier Transform [25] or Wavelet Transform [11,3], normalisations have been performed using the baseline power [26,27,28,3] or the power of the whole time window being investigated [6], and statistical methods such as non-parametric Wilcoxon test [29], Analysis of Variance (ANOVA) tests [30], and bootstrapping [31] have been used to test the significance of the observed response.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Induced activity in EEG in response to auditory stimulation

Hosseini

Bell

Wang

et al. 2015

Biomedical Signal Processing and Control

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The response of the brain to a sensory stimulus may present itself in the electroencephalogram (EEG) as evoked and/or induced activity. While the evoked response is given by peaks and troughs in the signal, time-locked and phase-locked to the stimuli, the induced response is time-but not phase-locked, and can be considered as an increase or a decrease in the power of EEG in a specific frequency band at a specific time range with regard to the stimulus onset. The induced response does not have the same phase following successive stimuli. It is believed that cognition and perception of a stimulus present themselves primarily as the induced response in the EEG. In this paper, the induced response of the brain to auditory speech stimuli is investigated and different approaches to detect induced activity are compared. It is shown that there is an increase in theta and delta power in response to words compared to the baseline, starting around 500 ms after their onset. During this time, there is also an increase in pairwise coherence between the posterior electrodes. In response to tone bursts, a change in pairwise coherence was observed in the beta band starting around 200 ms. To the best of our knowledge, this is the first time such responses have been described using simple protocols without complex stimulus manipulations being involved. Responses in the EEG to speech rather than the more conventional tone-bursts or clicks suggests that it may be feasible to use the EEG as an objective means to demonstrate brain activation to salient real world stimuli. This would be of particular benefit in investigating access to speech in patients who are unable or unwilling to reliably respond to conventional subjective experimental protocols, such as infants.

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Auditory Feedback

and¹,

Nagarajan²

2015

The Handbook of Speech Production

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Multiple brain signatures of integration in the comprehension of degraded speech

Cited by 133 publications

References 73 publications

Alpha and gamma band oscillations index differential processing of acoustically reduced and full forms

Alpha and gamma band oscillations index differential processing of acoustically reduced and full forms

Induced activity in EEG in response to auditory stimulation

Auditory Feedback

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