Executive and Language Control in the Multilingual Brain

Kong, Anthony Pak‐Hin; Abutalebi, Jubin; Lam, Karen Sze Yan; Weekes, Brendan S.

doi:10.1155/2014/527951

Cited by 37 publications

(33 citation statements)

References 27 publications

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“…The effect of name agreement shows objects with more alternative names are more vulnerable in aphasia presumably because they impose more lexical competition at the lemma level in picture naming (Alario et al ., ). This resonates with models of picture naming and spoken word production (e.g., Levelt et al ., ) and with the performance of Arabic, Chinese, English, Spanish, and bilingual speakers with aphasia (Kong, Abutalebi, Lam, & Weekes, ).…”

Section: Discussionmentioning

confidence: 99%

Aphasia in Persian: Implications for cognitive models of lexical processing

Bakhtiar

Jafary

Weekes

2016

Journal of Neuropsychology

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Current models of oral reading assume that different routes (sublexical, lexical, and semantic) mediate oral reading performance and reliance on different routes during oral reading depends on the characteristics of print to sound mappings. Studies of single cases of acquired dyslexia in aphasia have contributed to the development of such models by revealing patterns of double dissociation in object naming and oral reading skill that follow brain damage in Indo-European and Sino-Tibetan languages. Print to sound mapping in Persian varies in transparency because orthography to phonology translation depends uniquely on the presence or absence of vowel letters in print. Here a hypothesis is tested that oral reading in Persian requires a semantic reading pathway that is independent of a direct non-semantic reading pathway, by investigating whether Persian speakers with aphasia show selective impairments to object naming and reading aloud. A sample of 21 Persian speakers with aphasia ranging in age from 18 to 77 (mean = 53, SD = 16.9) was asked to name a same set of 200 objects and to read aloud the printed names of these objects in different sessions. As an additional measure of sublexical reading, patients were asked to read aloud 30 non-word stimuli. Results showed that oral reading is significantly more preserved than object naming in Persian speakers with aphasia. However, more preserved object naming than oral reading was also observed in some cases. There was a moderate positive correlation between picture naming and oral reading success (p < .05). Mixed-effects logistic regression revealed that word frequency, age of acquisition and imageability predict success across both tasks and there is an interaction between these variables and orthographic transparency in oral reading. Furthermore, opaque words were read less accurately than transparent words. The results reveal different patterns of acquired dyslexia in some cases that closely resemble phonological, deep, and surface dyslexia in other scripts - reported here in Persian for the first time.

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Section: Discussionmentioning

confidence: 99%

Aphasia in Persian: Implications for cognitive models of lexical processing

Bakhtiar

Jafary

Weekes

2016

Journal of Neuropsychology

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“…The more striking problems of language control are described in patients who have pathological language switching and/or pathological language mixing . In these conditions, patients involuntarily alternate languages across different utterances, or mix elements of two or more languages within a single utterance . These pathological behaviors are due to damage of distinct regions within the BLC network, predominantly subcortical (basal ganglia) and/or frontal areas and their connections with striatal structures.…”

Section: Overlap Between Ec and Blc Networkmentioning

confidence: 99%

“…Two studies have directly tested the relationship between impairment of linguistic and nonlinguistic control functions in this type of patient . Kong et al .…”

Section: Overlap Between Ec and Blc Networkmentioning

confidence: 99%

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Neural basis of bilingual language control

Calabria

Costa

Green

et al. 2018

Annals of the New York Academy of Sciences

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128

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Acquiring and speaking a second language increases demand on the processes of language control for bilingual as compared to monolingual speakers. Language control for bilingual speakers involves the ability to keep the two languages separated to avoid interference and to select one language or the other in a given conversational context. This ability is what we refer with the term "bilingual language control" (BLC). It is now well established that the architecture of this complex system of language control encompasses brain networks involving cortical and subcortical structures, each responsible for different cognitive processes such as goal maintenance, conflict monitoring, interference suppression, and selective response inhibition. Furthermore, advances have been made in determining the overlap between the BLC and the nonlinguistic executive control networks, under the hypothesis that the BLC processes are just an instantiation of a more domain-general control system. Here, we review the current knowledge about the neural basis of these control systems. Results from brain imaging studies of healthy adults and on the performance of bilingual individuals with brain damage are discussed.

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“…Recent evidence from bilingual aphasia provides some initial support of this hypothesis. Kong, Abutalebi, Lam, & Weekes (2014) reported a trilingual aphasic from Hong Kong with pathological language switching that was paralleled by EC dysfunctions.…”

Section: On the Relationship Between Bilingual Lc And Ecmentioning

confidence: 99%

The role of executive control in bilingual language production: A study with Parkinson's disease individuals

et al. 2015

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The basal ganglia are critically involved in language control (LC) processes, allowing a bilingual to utter correctly in one language without interference from the non-requested language. It has been hypothesized that the neural mechanism of LC closely resembles domain-general executive control (EC). The purpose of the present study is to investigate the integrity of bilingual LC and its overlap with domain-general EC in a clinical population such as individuals with Parkinson's disease (PD), notoriously associated with structural damage in the basal ganglia. We approach these issues in two ways. First, we employed a language switching task to investigate the integrity of LC in a group of Catalan-Spanish bilingual individuals with PD, as compared to a group of matched healthy controls. Second, to test the relationship between domain-general EC and LC we compared the performances of individuals with PD and healthy controls also in a non-linguistic switching task. We highlight that, compared to controls, individuals with PD report decreased processing speed, less accuracy and larger switching costs in terms of RT and errors in the language switching task, whereas in the non-linguistic switching task PD patients showed only increased switching cost in terms of errors. However, we report a positive correlation between the magnitudes of linguistic and non-linguistic mixing costs in individuals with PD. Taken together, these results support the notion of a critical role of the basal ganglia and connected structures in LC, and suggest a possible link between LC and domain-general EC.

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Executive and Language Control in the Multilingual Brain

Cited by 37 publications

References 27 publications

Aphasia in Persian: Implications for cognitive models of lexical processing

Aphasia in Persian: Implications for cognitive models of lexical processing

Neural basis of bilingual language control

The role of executive control in bilingual language production: A study with Parkinson's disease individuals

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