Neural Dynamics of Phonological Processing in the Dorsal Auditory Stream

Liebenthal, Einat; Sabri, Merav; Beardsley, Scott A.; Mangalathu-Arumana, Jain; Desai, Anjali

doi:10.1523/jneurosci.1511-13.2013

Cited by 61 publications

(57 citation statements)

References 66 publications

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“…These areas are activated not only during speech production tasks but also in speech perception tasks, particularly when the speech input is noisy (Chevillet et al, 2013; Hickok and Poeppel, 2007; Liebenthal et al, in press; Meister et al, 2007; Okada and Hickok, 2006). It has been postulated that such auditory-motor interactions may be particularly important during speech development (Hickok and Poeppel, 2007), and it is possible that, prior to full mastery of phonemic categorization, auditory-motor associations may play a significant role in facilitating or guiding phoneme perception (Callan et al, 2004).…”

Section: Discussionmentioning

confidence: 99%

FMRI of phonemic perception and its relationship to reading development in elementary- to middle-school-age children

et al. 2014

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Neuroimaging studies suggest that categorical perception of speech phonemes in adults is primarily subserved by a pathway from bilateral primary auditory areas to association areas in the left middle superior temporal cortex, but the neural substrates underlying categorical speech perception in children are not yet known. Here, fMRI was used to examine the neural substrates associated with phoneme perception in 7- to 12-year-old children as well as the relationships among level of expertise in phoneme perception, the associated activation, and the development of reading and phonological processing abilities. While multiple regions in left frontal, temporal, and parietal cortex were found to be more responsive to phonemic than nonphonemic sounds, the extent of left lateralization in posterior temporal and parietal regions during phonemic relative to nonphonemic discrimination differed depending on the degree of categorical phoneme perception. In addition, an unexpected finding was that proficiency in categorical perception was strongly related to activation in the left ventral occipitotemporal cortex, an area frequently associated with orthographic processing. Furthermore, in children who showed lower proficiency in categorical perception, the level of categorical perception was positively correlated with reading ability and reading and reading-related abilities were inversely correlated with right mid-temporal activation in the phonemic relative to nonphonemic perception contrast. These results suggest that greater specialization of left hemisphere temporal and parietal regions for the categorical perception of phonemes, as well as activation of the region termed the visual word form area, may be important for the optimal developmental refinement of both phoneme perception and reading ability.

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Section: Discussionmentioning

confidence: 99%

FMRI of phonemic perception and its relationship to reading development in elementary- to middle-school-age children

et al. 2014

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“…Because categorical speech perception requires the listener to maintain sublexical representations in an active state as a metalinguistic judgment is made, it involves some degree of executive control and working memory functions (1). Thus, the linearly prolonged RT and incremental BOLD activity in the PMv, IFG, pSTG, and IPL with increasing task difficulty likely reflect an accumulation of effort-related changes in selective attention (33), phonological working memory (20,(26)(27)(28), or phoneme-category judgment and response selection (5,8,34).…”

Section: Discussionmentioning

confidence: 99%

“…It is robust to individual anatomical variability, is sensitive to small differences in activation, and provides a powerful tool for examining the processes underlying speech categorization (25). We predicted that (i) because the dorsal auditory stream (i.e., IFG, PMC, pSTG, and IPL) supporting sensorimotor integration is activated as a result of task-related speech perception (5,(17)(18)(19)(20)(21) and phonological working memory processes (26)(27)(28), the mean BOLD activity in those regions would negatively correlate with SNR-manipulated accuracy (increasing activity with increasing difficulty), supporting the compensatory recruitment of the SMS under adverse listening conditions; (ii) to implement effective forward sensorimotor mapping, the SMS would exhibit stronger multivoxel phoneme discrimination than auditory regions under noisy listening conditions; and (iii) when SNR decreases, the difference in phoneme discriminability between the SMS and auditory regions may increase linearly, or increase first and then decrease at a certain SNR level because of failed forward prediction processes under extensive noise interference. That is, the efficiency of the forward mapping would adaptively change with SNR in a linear or a convex pattern, respectively.…”

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confidence: 99%

Noise differentially impacts phoneme representations in the auditory and speech motor systems

Buchsbaum

Grady

et al. 2014

Proc. Natl. Acad. Sci. U.S.A.

213

210

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Although it is well accepted that the speech motor system (SMS) is activated during speech perception, the functional role of this activation remains unclear. Here we test the hypothesis that the redundant motor activation contributes to categorical speech perception under adverse listening conditions. In this functional magnetic resonance imaging study, participants identified one of four phoneme tokens (/ba/, /ma/, /da/, or /ta/) under one of six signal-to-noise ratio (SNR) levels (-12, -9, -6, -2, 8 dB, and no noise). Univariate and multivariate pattern analyses were used to determine the role of the SMS during perception of noiseimpoverished phonemes. Results revealed a negative correlation between neural activity and perceptual accuracy in the left ventral premotor cortex and Broca's area. More importantly, multivoxel patterns of activity in the left ventral premotor cortex and Broca's area exhibited effective phoneme categorization when SNR ≥ -6 dB. This is in sharp contrast with phoneme discriminability in bilateral auditory cortices and sensorimotor interface areas (e.g., left posterior superior temporal gyrus), which was reliable only when the noise was extremely weak (SNR > 8 dB). Our findings provide strong neuroimaging evidence for a greater robustness of the SMS than auditory regions for categorical speech perception in noise. Under adverse listening conditions, better discriminative activity in the SMS may compensate for loss of specificity in the auditory system via sensorimotor integration.forward sensorimotor mapping | speech categorization | fMRI | multivariate pattern analysis T he perception and identification of speech signals have traditionally been attributed to the superior temporal cortices (1-3). However, the speech motor system (SMS)-the premotor cortex (PMC) and the posterior inferior frontal gyrus (IFG), including Broca's area-that traditionally supports speech production is also implicated in speech perception tasks as revealed by functional magnetic resonance imaging (fMRI) (4-8), magnetoencephalography (9), electrocorticography in patients (10), and transcranial magnetic stimulation (TMS) (11,12). Although there is little doubt about these redundant representations, contentious debate remains about the role of the SMS in speech perception. The idea of action-based (articulatory) representations of speech tokens was proposed long ago in the motor theory of speech perception (13) and has been revived recently with the discovery of "mirror neurons" (14). However, empirical evidence does not support a strong version of the motor theory (15). Instead, current theories of speech processing posit that the SMS may implement a sensorimotor integration function to facilitate speech perception (2,(16)(17)(18). Specifically, the SMS generates internal models that predict sensory consequences of articulatory gestures under consideration, and such forward predictions are matched with acoustic representations in sensorimotor interface areas located in the left posterior superior temporal gyrus (...

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“…Left temporoparietal activity during the repetition of nonwords correlates with phonological-lexical learning and is associated with the retrieval of whole word phonology (Majerus et al, 2005;Graves, Grabowski, Mehta, & Gupta, 2008). Moreover, the left supramarginal gyrus has been specifically linked with the perception (e.g., Jacquemot, Pallier, LeBihan, Dehaene, & Dupoux, 2003;Raizada & Poldrack, 2007;Turkeltaub & Coslett, 2010;Liebenthal, Sabri, Beardsley, Mangalathu-Arumana, & Desai, 2013) and sequencing of phoneme segments (Gelfand & Bookheimer, 2003;Moser, Baker, Sanchez, Rorden, & Fridriksson, 2009). …”

Section: Introductionmentioning

confidence: 99%

tDCS to temporoparietal cortex during familiarisation enhances the subsequent phonological coherence of nonwords in immediate serial recall

Savill

Ashton

Gugliuzza

et al. 2015

Cortex

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et al. (4 more authors) (2015) tDCS to temporoparietal cortex during familiarisation enhances the subsequent phonological coherence of nonwords in immediate serial recall. Cortex; a journal devoted to the study of the nervous system and behavior. pp. 132-144. ISSN 1973-8102 https://doi.org/10.1016/j.cortex.2014.08.018 eprints@whiterose.ac.uk https://eprints.whiterose.ac.uk/ Reuse Items deposited in White Rose Research Online are protected by copyright, with all rights reserved unless indicated otherwise. They may be downloaded and/or printed for private study, or other acts as permitted by national copyright laws. The publisher or other rights holders may allow further reproduction and re-use of the full text version. This is indicated by the licence information on the White Rose Research Online record for the item. TakedownIf you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing eprints@whiterose.ac.uk including the URL of the record and the reason for the withdrawal request. This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. that any effects were due to the influence of tDCS on long-term learning and not a direct consequence of short-term changes in neural excitability. We found that only a few exposures to the phonological forms of nonwords were sufficient to enhance nonword ISR overall compared to entirely novel items. Anodal tDCS during familiarisation further enhanced the acquisition of phonological forms, producing a specific reduction in the frequency of phoneme migrations when sequences of nonwords were maintained in verbal short-term memory. More of the phonemes that were recalled were bound together as a whole correct nonword following tDCS. These data show that tDCS to left temporoparietal cortex can facilitate word learning by strengthening the acquisition of long-term phonological forms, irrespective of the availability of a concrete referent, and that the consequences of this learning can be seen beyond the learning task as strengthened phonological coherence in verbal short-term memory.

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Neural Dynamics of Phonological Processing in the Dorsal Auditory Stream

Cited by 61 publications

References 66 publications

FMRI of phonemic perception and its relationship to reading development in elementary- to middle-school-age children

FMRI of phonemic perception and its relationship to reading development in elementary- to middle-school-age children

Noise differentially impacts phoneme representations in the auditory and speech motor systems

tDCS to temporoparietal cortex during familiarisation enhances the subsequent phonological coherence of nonwords in immediate serial recall

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