Neural correlates of auditory feedback control in human

Toyomura, Akira; Koyama, Sachiko; Miyamaoto, T.; Terao, Akira; Omori, Takashi; Murohashi, Harumitsu; Kuriki, Shinya

doi:10.1016/j.neuroscience.2007.02.023

Cited by 94 publications

(85 citation statements)

References 29 publications

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“…These conclusions are supported by pitch perturbation studies which have shown greater activation in inferior frontal cortex in the Fu et al (2006) and right posterior temporal cortex (McGuire et al, 1996). In another study of real-time pitch shifts during speech production, Toyomura et al (2007) greater responses to the shifted feedback in inferior frontal, posterior temporal and inferior parietal cortex. The authors concluded that the feedback control of pitch is primarily influenced by the right hemisphere.…”

Section: Implications For Speech Disordersmentioning

confidence: 67%

Neural mechanisms underlying auditory feedback control of speech

2008

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The neural substrates underlying auditory feedback control of speech were investigated using a combination of functional magnetic resonance imaging (fMRI) and computational modeling. Neural responses were measured while subjects spoke monosyllabic words under two conditions: (i) normal auditory feedback of their speech, and (ii) auditory feedback in which the first formant frequency of their speech was unexpectedly shifted in real time. Acoustic measurements showed compensation to the shift within approximately 135 ms of onset. Neuroimaging revealed increased activity in bilateral superior temporal cortex during shifted feedback, indicative of neurons coding mismatches between expected and actual auditory signals, as well as right prefrontal and Rolandic cortical activity. Structural equation modeling revealed increased influence of bilateral auditory cortical areas on right frontal areas during shifted speech, indicating that projections from auditory error cells in posterior superior temporal cortex to motor correction cells in right frontal cortex mediate auditory feedback control of speech.

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Section: Implications For Speech Disordersmentioning

confidence: 67%

Neural mechanisms underlying auditory feedback control of speech

2008

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“…Although marginally significant (interaction P ¼ 0.09), this dissociation is visible in individual subjects in Figure 3F: the individuals with strong responses during sound imagery in the right PSTG/SMG had low responses during the rhyming task, and vice versa. This dissociation shows that the implication of the right PSTG/SMG in phonological processing is presumably maladaptive because it is normally involved in non-speech complex acoustic processing [Thierry et al, 2003;Toyomura et al, 2007]. The positive correlation with post-CI scores in the sound imagery task may thus be explained by the fact that sustained use of the right PSTG/SMG protects against deleterious contralateral phonological take-over.…”

Section: Discussionmentioning

confidence: 93%

“…As the right PSTG/SMG is normally more involved in environmental sound processing [Lewis et al, 2004;Toyomura et al, 2007] than in phonological processing [Hartwigsen et al, 2010], we conducted a functional magnetic resonance imaging (fMRI) task in 10 post-lingual deaf subjects and 10 normal-hearing controls. Participants had to perform a mental imagery task in which they had to retrieve environmental sounds from pictures of noisy objects [Halpern and Zatorre, 1999].…”

Section: Introductionmentioning

confidence: 99%

Bilateral reorganization of posterior temporal cortices in post‐lingual deafness and its relation to cochlear implant outcome

Lazard

Lee

Truy

et al. 2012

Human Brain Mapping

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Post-lingual deafness induces a decline in the ability to process phonological sounds or evoke phonological representations. This decline is paralleled with abnormally high neural activity in the right posterior superior temporal gyrus/supramarginal gyrus (PSTG/SMG). As this neural plasticity negatively relates to cochlear implantation (CI) success, it appears important to understand its determinants. We addressed the neuro-functional mechanisms underlying this maladaptive phenomenon using behavioral and functional magnetic resonance imaging (fMRI) data acquired in 10 normal-hearing subjects and 10 post-lingual deaf candidates for CI. We compared two memory tasks where subjects had to evoke phonological (speech) and environmental sound representations from visually presented items. We observed dissociations in the dynamics of right versus left PSTG/SMG neural responses as a function of duration of deafness. Responses in the left PSTG/SMG to phonological processing and responses in the right PSTG/ SMG to environmental sound imagery both declined. However, abnormally high neural activity was observed in response to phonological visual items in the right PSTG/SMG, i.e., contralateral to the zone where phonological activity decreased. In contrast, no such responses (overactivation) were observed in the left PSTG/SMG in response to environmental sounds. This asymmetry in functional adaptation to deafness suggests that maladaptive reorganization of the right PSTG/SMG region is not due to balanced hemispheric interaction, but to a specific take-over of the right PSTG/SMG region by phonological processing, presumably because speech remains behaviorally more relevant to communication than the processing of environmental sounds. These results demonstrate that cognitive long-term alteration of auditory processing shapes functional cerebral reorganization. Hum Brain Mapp 00:000-000,

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“…Such results encouraged some researchers to investigate the effects of DAF on groups of chanters (Van Wijngaarden & Van Balken, 2007). FMRI studies proved that auditory feedback plays a pivotal role in natural speech production, notably in the control of pitch (Toyomura, 2007). Jones & Striemer (2007) explored whether providing visual feedback in addition to DAF would ameliorate speech disruption.…”

Section: Introductionmentioning

confidence: 99%

Overcoming Stuttering Using Delayed Auditory Feedback (DAF): A Case Study

Al-Yaari¹,

Hammadi²,

AyiedAlyami³

et al. 2013

IJELE

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Background: With the tremendous improvements in technology in producing new techniques to overcome stuttering, many assumptions were stated from different aspects. Aims:To in/validate some of the stuttering assumptions, the present study attempts to investigate the role played by Delayed Auditory Feedback (DAF) device in overcoming stuttering and improving stutterers' fluency. Methods:A client study of MO, a 23-year old bilingual student who exhibits stuttering and language delay due to psychological factors. An intensive therapeutic treatment which continued for 20 months has been given to the client at hand. The client had to practice (in English) ten(10) alphabetical characters, twenty (20) words (10 nouns and 10 verbs), and ten (10)sentences for four continuous hours every day. Results:The analyses of the client's utterances throughout five entire sessions show that his rate of speech became slower if not almost normal across increases in DAF. The findings reveal that simultaneous application of both treatments on speaking through DAF was successful in reducing the rate of stuttering in the speech of the client under investigation. It all depends on age, determination, the level of severity, and the way he/she uses DAF. These findings account for the results that support many theories of stuttering including Phonemic Content Theory, Covert Repair Hypothesis (CRH) and Johnson's theory. Taken together, these results weigh strongly against the hypothesis stated that stutterers have generally high levels of emotional reactivity (e.g., Brutten/Shoemaker, 1967).

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Neural correlates of auditory feedback control in human

Cited by 94 publications

References 29 publications

Neural mechanisms underlying auditory feedback control of speech

Neural mechanisms underlying auditory feedback control of speech

Bilateral reorganization of posterior temporal cortices in post‐lingual deafness and its relation to cochlear implant outcome

Overcoming Stuttering Using Delayed Auditory Feedback (DAF): A Case Study

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