Speech perception at birth: The brain encodes fast and slow temporal information

Cabrera, Laurianne; Gervain, Judit

doi:10.1126/sciadv.aba7830

Cited by 46 publications

(38 citation statements)

References 46 publications

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“…Similarly, the discrimination response was present in both temporal and prefrontal regions, but with no statistically significant different in response size across regions or hemispheres. This finding is consistent with the results of other studies measuring speech discrimination using a combination of channels from temporal and prefrontal areas 10 , 39 , 40 , although others have suggested that prefrontal areas best reflect speech sound discrimination 9 , 41 .…”

Section: Discussionsupporting

confidence: 92%

Speech token detection and discrimination in individual infants using functional near-infrared spectroscopy

Mao

Wunderlich

Savković

et al. 2021

Sci Rep

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Speech detection and discrimination ability are important measures of hearing ability that may inform crucial audiological intervention decisions for individuals with a hearing impairment. However, behavioral assessment of speech discrimination can be difficult and inaccurate in infants, prompting the need for an objective measure of speech detection and discrimination ability. In this study, the authors used functional near-infrared spectroscopy (fNIRS) as the objective measure. Twenty-three infants, 2 to 10 months of age participated, all of whom had passed newborn hearing screening or diagnostic audiology testing. They were presented with speech tokens at a comfortable listening level in a natural sleep state using a habituation/dishabituation paradigm. The authors hypothesized that fNIRS responses to speech token detection as well as speech token contrast discrimination could be measured in individual infants. The authors found significant fNIRS responses to speech detection in 87% of tested infants (false positive rate 0%), as well as to speech discrimination in 35% of tested infants (false positive rate 9%). The results show initial promise for the use of fNIRS as an objective clinical tool for measuring infant speech detection and discrimination ability; the authors highlight the further optimizations of test procedures and analysis techniques that would be required to improve accuracy and reliability to levels needed for clinical decision-making.

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Section: Discussionsupporting

confidence: 92%

Speech token detection and discrimination in individual infants using functional near-infrared spectroscopy

Mao

Wunderlich

Savković

et al. 2021

Sci Rep

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show abstract

“…Finally, multi-modality recordings (e.g., EEG with NIRS) are on the rise 359 – 361 and in the next five years will provide a critical cross-modal comparison of the physiological processes underlying infants’ perception and cognition. Indeed, NIRS is uniquely poised to allow for these kinds of multimodal recordings as it does not have the same constraints as the MR environment.…”

Section: Functional Applications In Neurodevelopment and Cognitionmentioning

confidence: 99%

Optical imaging and spectroscopy for the study of the human brain: status report

et al. 2022

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. This report is the second part of a comprehensive two-part series aimed at reviewing an extensive and diverse toolkit of novel methods to explore brain health and function. While the first report focused on neurophotonic tools mostly applicable to animal studies, here, we highlight optical spectroscopy and imaging methods relevant to noninvasive human brain studies. We outline current state-of-the-art technologies and software advances, explore the most recent impact of these technologies on neuroscience and clinical applications, identify the areas where innovation is needed, and provide an outlook for the future directions.

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“…Results from newborns and young infants have also brought new insights in this field. For example, combining hemodynamic (near-infrared spectroscopy) and EEG recordings to measure brain responses to syllables differing in consonants, Cabrera and Gervain (2020) showed that infants (9-10 months old) detect consonant changes on the basis of envelope cues (without the temporal fine structure) and they can even do so on the basis of the slow temporal variation alone (AM <8 Hz). These results are consistent with behavioral data obtained with older infants and adults for whom the slowest envelope cues are also sufficient to detect consonant changes in silence (Drullman, 1995; Shannon et al, 1995; Cabrera et al, 2015; Cabrera & Werner, 2017).…”

Section: Discussionmentioning

confidence: 99%

Subcortical and cortical tracking of communication sound envelopes in challenging listening conditions

Souffi

Varnet

Zaidi

et al. 2022

Preprint

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Humans and animals constantly face challenging acoustic environments such as various background noises restricting the detection, discrimination and identification of behaviorally salient sounds. Here, we disentangled the role of temporal envelope tracking on the decrease in neuronal and behavioral discrimination between communication sounds in situations of acoustic degradations. We simulated responses of auditory nerve fibers and recorded neuronal activity in cochlear nucleus, inferior colliculus, thalamus and auditory cortex in anesthetized guinea-pigs. Furthermore, a Go/No-Go sound discrimination task involving two of the guinea-pig whistles was performed on mice in silence and noise. For all conditions, we found that auditory neurons better track the slow amplitude modulations (<20 Hz) of the stimulus envelopes than the faster ones. In addition, the decrease in neuronal and behavioral discrimination performance in noise can be explained by an increased similarity of the vocalization envelopes in the low frequency range (<20 Hz). Together, these results suggest that slow envelope tracking is a general property of auditory neurons, and any difference between the slow envelopes of natural stimuli allows coping with degraded conditions.

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Speech perception at birth: The brain encodes fast and slow temporal information

Cited by 46 publications

References 46 publications

Speech token detection and discrimination in individual infants using functional near-infrared spectroscopy

Speech token detection and discrimination in individual infants using functional near-infrared spectroscopy

Optical imaging and spectroscopy for the study of the human brain: status report

Subcortical and cortical tracking of communication sound envelopes in challenging listening conditions

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