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Investigating the effects of handedness on the consistency of lateralization for speech production and semantic processing tasks using functional transcranial Doppler sonography
Bruckert, L.; Thompson, Paul A.; Watkins, K. E.; Bishop, D. V. M. (Dorothy V. M.); Woodhead, Z. V. J.. - : Taylor & Francis, 2021
Abstract: The left hemisphere is dominant for language in most people, but lateralization strength varies between different tasks and individuals. A large body of literature has shown that handedness is associated with lateralization: left handers have weaker language lateralization on average, and a greater incidence of atypical (right hemisphere) lateralization; but typically, these studies have relied on a single measure of language lateralization. Here we consider the relationships between lateralization for two different language tasks. We investigated the influence of handedness on lateralization using functional transcranial Doppler sonography (fTCD), using an existing dataset (N = 151 adults, 21 left handed). We compared a speech production task (word generation) and a semantic association task. We demonstrated stronger left-lateralization for word generation than semantic association; and a moderate correlation between laterality indices for the two tasks (r = 0.59). Laterality indices were stronger for right than left handers, and left handers were more likely than right handers to have atypical (right hemisphere) lateralization or inconsistent lateralization between the two tasks. These results add to our knowledge of individual differences in lateralization and support the view that language lateralization is multifactorial rather than unitary.
Keyword: BF Psychology; QP Physiology; RC Internal medicine
URL: https://doi.org/10.1080/1357650X.2021.1898416
http://wrap.warwick.ac.uk/160070/1/WRAP-investigating-effects-handedness-consistency-lateralization-speech-production-semantic-processing-tasks-using-functional-transcranial-Doppler-Thompson-2021.pdf
http://wrap.warwick.ac.uk/160070/
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2
Testing the unitary theory of language lateralization using functional transcranial Doppler sonography in adults
Woodhead, Z. V. J.; Bradshaw, A. R.; Wilson, A. C.. - : The Royal Society Publishing, 2019
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3
CATALISE : a multinational and multidisciplinary Delphi consensus study. Identifying language impairments in children
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4
CATALISE : a multinational and multidisciplinary Delphi consensus study. Identifying language impairments in children
Bishop, D. V. M.; Snowling, Margaret J.; Thompson, Paul A.. - : Public Library of Science, 2016
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5
Ten questions about terminology for children with unexplained language problems
In: International journal of language & communication disorders. - Oxford : Wiley-Blackwell 49 (2014) 4, 381-415
OLC Linguistik
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6
Increased prevalence of sex chromosome aneuploidies in specific language impairment and dyslexia
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7
CNTNAP2 variants affect early language development in the general population
Fisher, S E; Whitehouse, A J O; Bishop, D V M. - : Blackwell Publishing Ltd, 2011
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8
Overlaps between autism and language impairment: phenomimicry or shared etiology?
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9
Lower-frequency event-related desynchronization: a signature of late mismatch responses to sounds, which is reduced or absent in children with specific language impairment
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10
Genes, cognition, and communication: insights from neurodevelopmental disorders
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11
Reciprocal development in vocabulary and reading skills
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12
Orthographic facilitation in oral vocabulary acquisition
Ricketts, Jessie; Bishop, D. V. M. (Dorothy V. M.); Nation, Kate. - : Psychology Press, 2009
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13
Weak hand preference in children with down syndrome is associated with language deficits
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14
Weak hand preference in children with Down syndrome is associated with language deficits
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15
Heritability of specific language impairment depends on diagnostic criteria
Bishop, D V M; Hayiou-Thomas, M E. - : Blackwell Publishing Ltd, 2008
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16
Heritable risk factors associated with language impairments
Barry, J G; Yasin, I; Bishop, D V M. - : Blackwell Publishing Ltd, 2007
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17
Is poor frequency modulation detection linked to literacy problems? A comparison of specific reading disability and mild to moderate sensorineural hearing loss
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18
Speech and non-speech processing in people with specific language impairment: a behavioural and electrophysiological study
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19
Frequency discrimination deficits in people with specific language impairment : reliability, validity, and linguistic correlates
McArthur, G. M; Bishop, D. V. M. - : America Speech-Language-Hearing Association, 2004
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20
Auditory Perceptual Processing in People with Reading and Oral Language Impairments: Current Issues and Recommendations
In: Dyslexia. - Bracknell : British Dyslexia Association 7 (2001) 3, 150-170
OLC Linguistik
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