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Cerebral lateralisation of first and second languages in bilinguals assessed using functional transcranial Doppler ultrasound
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Cerebral lateralisation of first and second languages in bilinguals assessed using functional transcranial Doppler ultrasound
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In: Wellcome Open Res (2021)
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Deaf readers benefit from lexical feedback during orthographic processing
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Cerebral lateralisation during signed and spoken language production in children born deaf
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Evidence for shared conceptual representations for sign and speech
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Sign and Speech Share Partially Overlapping Conceptual Representations
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Sign and Speech Share Partially Overlapping Conceptual Representations
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Cerebral lateralisation during signed and spoken language production in children born deaf
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Deaf readers benefit from lexical feedback during orthographic processing
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Sign and Speech Share Partially Overlapping Conceptual Representations
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In: Brain and Mind Institute Researchers' Publications (2019)
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Early use of phonological codes in deaf readers: An ERP study
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LSE-Sign: A lexical database for Spanish Sign Language
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In: ISSN: 1554-351X ; EISSN: 1554-3528 ; Behavior Research Methods ; https://hal.archives-ouvertes.fr/hal-01432250 ; Behavior Research Methods, Psychonomic Society, Inc, 2016, 48 (1), pp.123-137. ⟨10.3758/s13428-014-0560-1⟩ (2016)
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Examining the contribution of motor movement and language dominance to increased left lateralization during sign generation in native signers
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Investigating language lateralization during phonological and semantic fluency tasks using functional transcranial Doppler sonography
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Language lateralization of hearing native signers: A functional transcranial Doppler sonography (fTCD) study of speech and sign production
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Stimulus rate increases lateralisation in linguistic and non-linguistic tasks measured by functional transcranial Doppler sonography
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Abstract:
Studies to date that have used fTCD to examine language lateralisation have predominantly used word or sentence generation tasks. Here we sought to further assess the sensitivity of fTCD to language lateralisation by using a metalinguistic task which does not involve novel speech generation: rhyme judgement in response to written words. Line array judgement was included as a non-linguistic visuospatial task to examine the relative strength of left and right hemisphere lateralisation within the same individuals when output requirements of the tasks are matched. These externally paced tasks allowed us to manipulate the number of stimuli presented to participants and thus assess the influence of pace on the strength of lateralisation.In Experiment 1, 28 right-handed adults participated in rhyme and line array judgement tasks and showed reliable left and right lateralisation at the group level for each task, respectively. In Experiment 2 we increased the pace of the tasks, presenting more stimuli per trial. We measured laterality indices (LIs) from 18 participants who performed both linguistic and non-linguistic judgement tasks during the original 'slow' presentation rate (5 judgements per trial) and a fast presentation rate (10 judgements per trial). The increase in pace led to increased strength of lateralisation in both the rhyme and line conditions.Our results demonstrate for the first time that fTCD is sensitive to the left lateralised processes involved in metalinguistic judgements. Our data also suggest that changes in the strength of language lateralisation, as measured by fTCD, are not driven by articulatory demands alone. The current results suggest that at least one aspect of task difficulty, the pace of stimulus presentation, influences the strength of lateralisation during both linguistic and non-linguistic tasks.
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URL: http://repository.essex.ac.uk/25213/ https://doi.org/10.1016/j.neuropsychologia.2015.04.019 http://repository.essex.ac.uk/25213/1/Stimulus%20rate%20increases%20lateralisation%20in%20linguistic%20and%20non-linguistic%20tasks%20measured%20by%20functional%20transcranial%20Doppler%20sonography.pdf
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Language lateralization of hearing native signers: A functional transcranial Doppler sonography (fTCD) study of speech and sign production
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Investigating language lateralization during phonological and semantic fluency tasks using functional transcranial Doppler sonography
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