Plasticity of the language system in children and adults

Martin, Kevin; Ketchabaw, W. Tyler; Turkeltaub, Peter E.

doi:10.1016/b978-0-12-819410-2.00021-7

Cited by 13 publications

(7 citation statements)

References 180 publications

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“…The relationship between age and language acquisition in both FLD and ESLA is a complex and extensively studied area. In FLD, infants and children naturally acquire language within a critical period, demonstrating rapid vocabulary and grammatical development, suggesting biologically determined optimal times for language learning (Azieb, 2021;Han & Bao, 2023;Martin et al, 2022;Siahaan, 2022;Singleton & Leśniewska, 2021;Singleton & Ryan, 2004;Vanhove, 2013;Zurlinden, 2004).…”

Section: Critical Period Hypothesismentioning

confidence: 99%

Exploring The Effects of English as a Foreign Language on First Language Development of Young Children: The Case of Greece

Jansen

2024

IJELD

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This study meticulously investigates the interplay between Early Second Language Acquisition (ESLA) and the potential emergence of first language disorders in the unique context of Greece. Embedded in the Complex Dynamic Systems Theory (CDST) paradigm, it aims to untangle existing ambiguities and explore implications for Greek society and education. Employing a Concurrent Mixed Methods Approach, the study attempts to unveil the intricate impacts of ESLA on First Language Development (FLD).Grounded in CDST's framework emphasizing linguistic system complexity, and interconnectedness, the research design employs a Descriptive Exploratory orientation through a Case Study Methodology. This facilitates comprehensive research into two cohorts of children aged four, representing monolingual Greek kindergartens (Cohort A) and English as a Foreign Language (EFL)-focused kindergartens (Cohort B).The research inquiries delve into multifaceted language development aspects amidst intricate linguistic dynamics. This involves nuanced analysis of potential performance disparities in the primary language pre- and post-interventions in early foreign language pedagogy, meticulous comparative assessment of both cohorts, and insightful exploration of EFL's implications on young children's nascent language development.Methodologically, data collection employs a language development assessment tool (Logometro®). The collection of both quantitative and qualitative data in this study is contingent upon the application of the Logometro® language assessment instrument. Thematic Analysis shapes the qualitative corpus, complemented by statistical analyses for quantitative data.Anticipated outcomes aim to enhance understanding among Greek educational authorities and the scientific community about intricate, adaptive ESLA impacts on FLD. Findings could influence enduring, impactful EFL policies shaped by Greek authorities. Overall, the research deepens comprehension of latent consequences tied to ESLA's effects on FLD, set within Greece’s intricate context. Nested within CDST's theoretical framework, the amalgamation of research methodology and insights provides a robust foundation for future inquiries and invaluable guidance for policymakers navigating English language education decisions among young learners.

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Section: Critical Period Hypothesismentioning

confidence: 99%

Exploring The Effects of English as a Foreign Language on First Language Development of Young Children: The Case of Greece

Jansen

2024

IJELD

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“…Typically, aphasia often is a persisting impairment with less than 24% of the affected patients fully recovering within 18 months ( 1 ). Although most patients show signs of recovery during the first 6 months after stroke ( 3 ), improvement can be observed until much later ( 3 , 4 ).…”

Section: Introductionmentioning

confidence: 99%

The long-term negative impact of childhood stroke on language

Heimgärtner,

Gschaidmeier,

Schnaufer

et al. 2024

Front. Pediatr.

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ObjectivesThis study aims to investigate the long-term language outcome in children with unilateral childhood stroke in comparison to those with perinatal strokes and typically developing individuals and to explore the impact of lesion-specific modifiers.MethodsWe examined nine patients with childhood stroke, acquired between 0;2 and 16;1 years (CHILD; 3 female, median = 13.5 years, 6 left-sided), 23 patients with perinatal strokes (PERI; 11 female, median = 12.5 years, 16 left-sided), and 33 age-matched typically developing individuals (CONTROL; 15 female, median = 12.33 years). The language outcome was assessed using age-appropriate tasks of the Potsdam Illinois Test of Psycholinguistic Abilities (P-ITPA) or the Peabody Picture Vocabulary Test (PPVT). For group comparisons, study-specific language z-scores were calculated. Non-verbal intelligence was assessed using the Test of Non-verbal Intelligence (TONI-4), language lateralization with functional MRI, and lesion size with MRI-based volumetry.ResultsAll four patients with childhood stroke who initially presented with aphasic symptoms recovered from aphasia. Patients with childhood stroke showed significantly lower language scores than those in the control group, but their scores were similar to those of the patients with perinatal stroke, after adjusting for general intelligence (ANCOVA, language z-score CHILD = −0.30, PERI = −0.38, CONTROL = 0.42). Among the patients with childhood stroke, none of the possible modifying factors, including lesion side, correlated significantly with the language outcome.ConclusionChildhood stroke, regardless of the affected hemisphere, can lead to chronic language deficits, even though affected children show a “full recovery.” The rehabilitation of children and adolescents with childhood stroke should address language abilities, even after the usually quick resolution of clear aphasic symptoms.

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“…Language plasticity has been a particular focus in neuroscience as it is important for human socialization and communication (1,2). Patients with damages located in language-related cortical areas may have a normal language function, as has been found in patients with perinatal stroke, arteriovenous malformation (AVM), and traumatic brain injury (3)(4)(5).…”

Section: Introductionmentioning

confidence: 99%

Language function of the superior longitudinal fasciculus in patients with arteriovenous malformation as evidenced by automatic fiber quantification

et al. 2023

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The superior longitudinal fasciculus (SLF) is a major fiber tract involved in language processing and has been used to investigate language impairments and plasticity in many neurological diseases. The SLF is divided into four main branches that connect with different cortex regions, with two branches (SLF II, SLF III) being directly related to language. However, most white matter analyses consider the SLF as a single bundle, which may underestimate the relationship between these fiber bundles and language function. In this study, we investigated the differences between branches of the SLF in patients with arteriovenous malformation (AVM), which is a unique model to investigate language reorganization. We analyzed diffusion tensor imaging data of AVM patients and healthy controls to generate whole-brain fiber tractography, and then segmented the SLF into SLF II and III based on their distinctive waypoint regions. The SLF, SLF II, and III were further quantified, and four diffusion parameters of three branches were compared between the AVMs and controls. No significant diffusivity differences of the whole SLF were observed between two groups, however, the right SLF II and III in AVMs showed significant reorganization or impairment patterns as compared to the controls. Results demonstrating the need to subtracting SLF branches when studying structure-function relationship in neurological diseases that have SLF damage.

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Plasticity of the language system in children and adults

Cited by 13 publications

References 180 publications

Exploring The Effects of English as a Foreign Language on First Language Development of Young Children: The Case of Greece

Exploring The Effects of English as a Foreign Language on First Language Development of Young Children: The Case of Greece

The long-term negative impact of childhood stroke on language

Language function of the superior longitudinal fasciculus in patients with arteriovenous malformation as evidenced by automatic fiber quantification

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