scholarly journals Beyond Broca: Neural Architecture and Evolution of a Dual Motor Speech Coordination System

2021 ◽  
Author(s):  
Gregory Hickok ◽  
Jonathan Henry Venezia ◽  
Alex Teghipco
Keyword(s):  
Speech Production ◽  
Neural Systems ◽  
Single System ◽  
Speech And Language ◽  
Motor Speech ◽  
Neural Architecture ◽  
System P ◽  
Evolution Of Speech ◽  
Coordination System ◽  
Laryngeal Control

Classical neural architecture models of speech production propose a single system coordinating all the vocal articulators from lips to larynx. Here we propose a dual coordination system in which laryngeal control of pitch-related aspects of prosody and song are controlled by a dorsal premotor system while supralaryngeal articulation at the phonetic/syllabic level is controlled by a ventral premotor system. The separability of these neural systems supports models of the evolution of speech and language in which song-based communication was an early foundational stage.

scholarly journals Phonological Awareness and Print Knowledge of Preschool Children With Cochlear Implants

2012 ◽  
Vol 55 (3) ◽  
pp. 811-823 ◽  
Author(s):  
Sophie E. Ambrose ◽  
Marc E. Fey ◽  
Laurie S. Eisenberg
Keyword(s):  
Standard Deviation ◽  
Speech Perception ◽  
Phonological Awareness ◽  
Speech Production ◽  
Cochlear Implants ◽  
Preschool Age ◽  
Speech And Language ◽  
Sample Mean ◽  
Print Knowledge ◽  
Age Appropriate

PurposeTo determine whether preschool-age children with cochlear implants have age-appropriate phonological awareness and print knowledge and to examine the relationships of these skills with related speech and language abilities.MethodThe sample comprised 24 children with cochlear implants (CIs) and 23 peers with normal hearing (NH), ages 36 to 60 months. Children's print knowledge, phonological awareness, language, speech production, and speech perception abilities were assessed.ResultsFor phonological awareness, the CI group's mean score fell within one standard deviation of the Test of Preschool Early Literacy's (Lonigan, Wagner, Torgesen, & Rashotte, 2007) normative sample mean but was more than one standard deviation below the NH group mean. The CI group's performance did not differ significantly from that of the NH group for print knowledge. For the CI group, phonological awareness and print knowledge were significantly correlated with language, speech production, and speech perception. Together these predictor variables accounted for 34% of variance in the CI group's phonological awareness but no significant variance in their print knowledge.ConclusionsChildren with CIs have the potential to develop age-appropriate early literacy skills by preschool age but are likely to lag behind their NH peers in phonological awareness. Intervention programs serving these children should target these skills with instruction and by facilitating speech and language development.

scholarly journals Reductions in prefrontal activation predict off-topic utterances during speech production

2018 ◽  
Author(s):  
Paul Hoffman
Keyword(s):  
Prefrontal Cortex ◽  
Speech Production ◽  
Formal Analysis ◽  
Neural Systems ◽  
Healthy Older Adults ◽  
Linguistic Analyses ◽  
Complex Goal ◽  
First Time ◽  
Increased Activity ◽  
Selection Of

AbstractThe ability to speak coherently is essential for effective communication but declines with age: older people more frequently produce tangential, off-topic speech. Little is known, however, about the neural systems that support coherence in speech production. Here, fMRI was used to investigate extended speech production in healthy older adults. Computational linguistic analyses were used to quantify the coherence of utterances produced in the scanner, allowing identification of the neural correlates of coherence for the first time. Highly coherent speech production was associated with increased activity in bilateral inferior prefrontal cortex (BA45), an area implicated in selection of task-relevant knowledge from semantic memory, and in bilateral rostrolateral prefrontal cortex (BA10), implicated more generally in planning of complex goal-directed behaviours. These findings demonstrate that neural activity during spontaneous speech production can be predicted from formal analysis of speech content, and that multiple prefrontal systems contribute to coherence in speech.

The Efficacy of Phonological Awareness Intervention for Children With Spoken Language Impairment

2000 ◽  
Vol 31 (2) ◽  
pp. 126-141 ◽  
Author(s):  
Gail T. Gillon
Keyword(s):  
Phonological Awareness ◽  
Speech Production ◽  
Language Impairment ◽  
Language Skills ◽  
Reading Development ◽  
Control Program ◽  
Spoken Language ◽  
Language Intervention ◽  
Typically Developing ◽  
Speech And Language

Purpose:This study investigated the efficacy of an integrated phonological awareness intervention approach for children with spoken language impairment (SLI) who demonstrated early reading delay. Ninety-one, 5- to 7-year-old New Zealand children participated in this study: 61 children with SLI and 30 children with typically developing speech and language skills. All of the children with language impairment exhibited expressive phonological difficulties and some also had delayed semantic and syntactic development.Method:The children with SLI participated in either: (a) an integrated phonological awareness program, (b) a more traditional speech-language intervention control program that focused on improving articulation and language skills, or (c) a minimal intervention control program over a 4 1/2-month time period.Results:Effects of the interventions on phonological awareness ability, reading performance, and speech production were examined. The children who received phonological awareness intervention made significantly more gains in their phonological awareness ability and reading development than the children receiving the other types of speech and language intervention. Despite significant delays in phonological awareness prior to training, children who received the phonological awareness intervention reached levels of performance similar to children with typically developing speech and language skills at post-test assessment. The phonological awareness intervention also improved the children's speech articulation.Clinical Implications:The findings suggest that integrated phonological awareness intervention may be an efficient method to improve phonological awareness, speech production, and reading development of children with SLI. Findings are discussed with reference to a speech-literacy link model.

A one-step colorimetric acid–base titration sensor using a complementary color changing coordination system

The Analyst ◽  
2016 ◽  
Vol 141 (12) ◽  
pp. 3890-3897 ◽  
Author(s):  
Hui Hun Cho ◽  
Si Hyun Kim ◽  
Jun Hyuk Heo ◽  
Young Eel Moon ◽  
Young Hun Choi ◽  
...  
Keyword(s):  
Acid Content ◽  
Quantitative Detection ◽  
Acid Base ◽  
System P ◽  
Acid Base Titration ◽  
Complementary Color ◽  
Coordination System ◽  
One Step

A colorimetric acid–base titration sensor allowing one-step quantitative detection of acid content by naked eyes.

Postoperative motor speech production in children with the syndrome of ‘cerebellar’ mutism and subsequent dysarthria: A critical review of the literature

2007 ◽  
Vol 11 (4) ◽  
pp. 193-207 ◽  
Author(s):  
Hyo Jung De Smet ◽  
Hanne Baillieux ◽  
Coriene Catsman-Berrevoets ◽  
Peter P. De Deyn ◽  
Peter Mariën ◽  
...  
Keyword(s):  
Speech Production ◽  
Critical Review ◽  
Cerebellar Mutism ◽  
Review Of The Literature ◽  
Motor Speech

Digital analysis of laryngeal control in speech production

1976 ◽  
Vol 60 (2) ◽  
pp. 446-455 ◽  
Author(s):  
J. L. Flanagan ◽  
L. R. Rabiner ◽  
D. Christopher ◽  
D. E. Bock ◽  
T. Shipp
Keyword(s):  
Speech Production ◽  
Digital Analysis ◽  
Laryngeal Control

scholarly journals Communication Limitations in Patients With Progressive Apraxia of Speech and Aphasia

2020 ◽  
Vol 29 (4) ◽  
pp. 1976-1986
Author(s):  
Rene L. Utianski ◽  
Heather M. Clark ◽  
Joseph R. Duffy ◽  
Hugo Botha ◽  
Jennifer L. Whitwell ◽  
...  
Keyword(s):  
Functional Communication ◽  
Apraxia Of Speech ◽  
Speech And Language ◽  
Motor Speech ◽  
Entire Cohort ◽  
Severity Rating ◽  
Speech Language Pathologist ◽  
Motor Speech Disorder ◽  
Language Evaluations ◽  
Language Measures

Purpose Individuals with primary progressive apraxia of speech (AOS) have AOS in which disruptions in articulation and prosody predominate the speech pattern. Many develop aphasia and/or dysarthria later in the disease course. The aim of this study was to describe the communication limitations in these patients, as measured by (a) the patient via the Communicative Participation Item Bank (CPIB) and (b) the speech-language pathologist via the American Speech-Language-Hearing Association's (ASHA) Functional Communication Measures (FCMs) and an adapted motor speech disorder (MSD) severity rating. Method Speech and language evaluations were completed for 24 patients with progressive AOS ( n = 7 with isolated AOS; n = 17 with a combination of AOS and aphasia). Descriptive comparisons were utilized to evaluate differences in communication measures among patients with various combinations of MSDs and aphasia. Differences associated with phonetic predominant or prosodic predominant AOS were also examined. Across the entire cohort, correlations were calculated between the participation ratings and other clinical assessment measures. Results The CPIB reflected greater limitations for those with aphasia and AOS compared to isolated AOS, but was not notably different when dysarthria occurred with AOS ( n = 9/24). Across the cohort, there were statistically significant correlations between the CPIB and ASHA FCM–Motor Speech and Language Expression ratings and the MSD severity rating. The CPIB did not correlate with the ASHA FCM–Language Comprehension or other speech-language measures. Conclusions Patients with neurodegenerative AOS experience reduced participation in communication that is further exacerbated by co-occurring language deficits. The study suggests measures of severity cannot be assumed to correlate with measures of participation restrictions and offers a foundation for further research examining the day-to-day sequela of progressive speech and language disorders. Supplemental Material https://doi.org/10.23641/asha.12743252

scholarly journals Paradigmatic and syntagmatic effects in Estonian spontaneous speech

2021 ◽  
Author(s):  
Kaidi Lõo ◽  
Fabian Tomaschek ◽  
Pärtel Lippus ◽  
Benjamin V. Tucker
Keyword(s):  
Complex System ◽  
Internal Structure ◽  
Speech Production ◽  
Production System ◽  
Language Production ◽  
Spontaneous Speech ◽  
Corpus Analysis ◽  
Linguistic Context ◽  
System P ◽  
Morphological Family

Recent evidence has indicated that a word's morphological family and inflectional paradigm members get activated when we produce words. These paradigmatic effects have previously been studied in careful, laboratory context using words in isolation. This previous research has not investigated how the linguistic context affects spontaneous speech production. The current corpus analysis investigates paradigmatic and syntagmatic effects in Estonian spontaneous speech. Following related work on English, we focus on morphemic and non-morphemic word final /-s/ in content words. We report that linguistic context, as measured by conditional probability, has the strongest effect on the acoustic durations, while inflectional properties (internal structure and inflectional paradigm size) also affect word and segment durations. These results indicate that morphology is part of a complex system that interacts with other aspects of the language production system.

The Evolution of Speech and Language

2014 ◽  
pp. 873-920
Author(s):  
Philip Lieberman ◽  
Robert C. McCarthy
Keyword(s):  
Speech And Language ◽  
Evolution Of Speech

scholarly journals Clinical Utility of Transcranial Magnetic Stimulation (TMS) in the Presurgical Evaluation of Motor, Speech, and Language Functions in Young Children With Refractory Epilepsy or Brain Tumor: Preliminary Evidence

2021 ◽  
Vol 12 ◽  
Author(s):  
Shalini Narayana ◽  
Savannah K. Gibbs ◽  
Stephen P. Fulton ◽  
Amy Lee McGregor ◽  
Basanagoud Mudigoudar ◽  
...  
Keyword(s):  
Brain Tumor ◽  
Transcranial Magnetic Stimulation ◽  
Motor Cortex ◽  
Young Children ◽  
Magnetic Stimulation ◽  
Clinical Utility ◽  
Refractory Epilepsy ◽  
Speech And Language ◽  
Motor Speech ◽  
Language Functions

Accurate presurgical mapping of motor, speech, and language cortices, while crucial for neurosurgical planning and minimizing post-operative functional deficits, is challenging in young children with neurological disease. In such children, both invasive (cortical stimulation mapping) and non-invasive functional mapping imaging methods (MEG, fMRI) have limited success, often leading to delayed surgery or adverse post-surgical outcomes. We therefore examined the clinical utility of transcranial magnetic stimulation (TMS) in young children who require functional mapping. In a retrospective chart review of TMS studies performed on children with refractory epilepsy or a brain tumor, at our institution, we identified 47 mapping sessions in 36 children 3 years of age or younger, in whom upper and lower extremity motor mapping was attempted; and 13 children 5–6 years old in whom language mapping, using a naming paradigm, was attempted. The primary hand motor cortex was identified in at least one hemisphere in 33 of 36 patients, and in both hemispheres in 27 children. In 17 children, primary leg motor cortex was also successfully identified. The language cortices in temporal regions were successfully mapped in 11 of 13 patients, and in six of them language cortices in frontal regions were also mapped, with most children (n = 5) showing right hemisphere dominance for expressive language. Ten children had a seizure that was consistent with their clinical semiology during or immediately following TMS, none of which required intervention or impeded completion of mapping. Using TMS, both normal motor, speech, and language developmental patterns and apparent disease induced reorganization were demonstrated in this young cohort. The successful localization of motor, speech, and language cortices in young children improved the understanding of the risk-benefit ratio prior to surgery and facilitated surgical planning aimed at preserving motor, speech, and language functions. Post-operatively, motor function was preserved or improved in nine out of 11 children who underwent surgery, as was language function in all seven children who had surgery for lesions near eloquent cortices. We provide feasibility data that TMS is a safe, reliable, and effective tool to map eloquent cortices in young children.

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