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Bilingual language control and general purpose cognitive control among individuals with bilingual aphasia: evidence based on negative priming and flanker tasks.

Dash T, Kar BR - Behav Neurol (2014)

Bottom Line: Bilingualism results in an added advantage with respect to cognitive control.The cumulative distribution function plots were used to visualize the variations in performance across conditions.The results highlight the distinction between general purpose cognitive control and bilingual language control mechanisms.

View Article: PubMed Central - PubMed

Affiliation: Centre of Behavioural and Cognitive Sciences, Senate Hall Campus, University of Allahabad, Allahabad-211002, India.

ABSTRACT

Background: Bilingualism results in an added advantage with respect to cognitive control. The interaction between bilingual language control and general purpose cognitive control systems can also be understood by studying executive control among individuals with bilingual aphasia. objectives: The current study examined the subcomponents of cognitive control in bilingual aphasia. A case study approach was used to investigate whether cognitive control and language control are two separate systems and how factors related to bilingualism interact with control processes.

Methods: Four individuals with bilingual aphasia performed a language background questionnaire, picture description task, and two experimental tasks (nonlinguistic negative priming task and linguistic and nonlinguistic versions of flanker task).

Results: A descriptive approach was used to analyse the data using reaction time and accuracy measures. The cumulative distribution function plots were used to visualize the variations in performance across conditions. The results highlight the distinction between general purpose cognitive control and bilingual language control mechanisms.

Conclusion: All participants showed predominant use of the reactive control mechanism to compensate for the limited resources system. Independent yet interactive systems for bilingual language control and general purpose cognitive control were postulated based on the experimental data derived from individuals with bilingual aphasia.

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Related in: MedlinePlus

(a-b): Reaction time data and CDF plot based on the performance of MMH on the flanker task with nonlinguistic stimuli.
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fig6: (a-b): Reaction time data and CDF plot based on the performance of MMH on the flanker task with nonlinguistic stimuli.

Mentions: MMH showed a 98.8% accuracy on the standard flanker task, demonstrating the expected congruency effect with faster RTs on congruent trials compared to the incongruent trials. According to the CDF analysis, a congruency effect was observed with respect to the neutral condition only on slow trials, indicating the involvement of reactive control (see Figures 6(a) and 6(b)). The CDF plots indicated that RTs for the neutral condition were faster than the incongruent condition throughout the distribution, which is suggestive of the presence of an interactive and efficient inhibitory control mechanism.


Bilingual language control and general purpose cognitive control among individuals with bilingual aphasia: evidence based on negative priming and flanker tasks.

Dash T, Kar BR - Behav Neurol (2014)

(a-b): Reaction time data and CDF plot based on the performance of MMH on the flanker task with nonlinguistic stimuli.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4042523&req=5

fig6: (a-b): Reaction time data and CDF plot based on the performance of MMH on the flanker task with nonlinguistic stimuli.
Mentions: MMH showed a 98.8% accuracy on the standard flanker task, demonstrating the expected congruency effect with faster RTs on congruent trials compared to the incongruent trials. According to the CDF analysis, a congruency effect was observed with respect to the neutral condition only on slow trials, indicating the involvement of reactive control (see Figures 6(a) and 6(b)). The CDF plots indicated that RTs for the neutral condition were faster than the incongruent condition throughout the distribution, which is suggestive of the presence of an interactive and efficient inhibitory control mechanism.

Bottom Line: Bilingualism results in an added advantage with respect to cognitive control.The cumulative distribution function plots were used to visualize the variations in performance across conditions.The results highlight the distinction between general purpose cognitive control and bilingual language control mechanisms.

View Article: PubMed Central - PubMed

Affiliation: Centre of Behavioural and Cognitive Sciences, Senate Hall Campus, University of Allahabad, Allahabad-211002, India.

ABSTRACT

Background: Bilingualism results in an added advantage with respect to cognitive control. The interaction between bilingual language control and general purpose cognitive control systems can also be understood by studying executive control among individuals with bilingual aphasia. objectives: The current study examined the subcomponents of cognitive control in bilingual aphasia. A case study approach was used to investigate whether cognitive control and language control are two separate systems and how factors related to bilingualism interact with control processes.

Methods: Four individuals with bilingual aphasia performed a language background questionnaire, picture description task, and two experimental tasks (nonlinguistic negative priming task and linguistic and nonlinguistic versions of flanker task).

Results: A descriptive approach was used to analyse the data using reaction time and accuracy measures. The cumulative distribution function plots were used to visualize the variations in performance across conditions. The results highlight the distinction between general purpose cognitive control and bilingual language control mechanisms.

Conclusion: All participants showed predominant use of the reactive control mechanism to compensate for the limited resources system. Independent yet interactive systems for bilingual language control and general purpose cognitive control were postulated based on the experimental data derived from individuals with bilingual aphasia.

Show MeSH
Related in: MedlinePlus