Handedness and White Matter Networks

Budisavljević, Sanja; Castiello, Umberto; Begliomini, Chiara

doi:10.1177/1073858420937657

Cited by 32 publications

(27 citation statements)

References 169 publications

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“…It should be noted that all previous studies that investigated the volume of the sub-regions were based on the midsagittal surface of the CC (Budisavljevic et al, 2020). This makes our tractography results based on CSD more reliable compared to the previous studies.…”

Section: Discussionmentioning

confidence: 76%

“…Besides grey matter asymmetries, the interhemispheric interaction, which is mainly conveyed through the corpus callosum (CC), has been suggested to have an association with handedness (Budisavljevic, Castiello, & Begliomini, 2020;. At the functional level, this interaction is explained by two models.…”

Section: Introductionmentioning

confidence: 99%

“…Nevertheless, using structural images does not reflect the properties of the CC fibers, in contrast to tractography (Basser & Jones, 2002). Currently, there are four tractography studies based on diffusion-tensor imaging (DTI) that investigated the relation between microstructural properties, but not the volume of the sub-regions, and handedness (Budisavljevic et al, 2020). The tractography studies have shown the fractional anisotropy (FA) metric of DTI, as a microstructural property of the subregions, to be larger in left-handers (McKay, Iwabuchi, Häberling, Corballis, & Kirk, 2017;.…”

Section: Introductionmentioning

confidence: 99%

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2020

RJCS

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Аннотация. Под восприятием ансамблей обычно понимают способность наблюдателя за короткое время с высокой степенью точности оценивать обобщенные статистические свойства множества объектов (среднее, дисперсия, количество). В обзоре описывается феноменология восприятия ансамблей и методы его исследования. Описываются конкурирующие концепции механизмов отбора и обработки информации для расчета статистик ансамбля, одна из которых предполагает грубую обработку всех объектов сразу, а другая -детальную обработку лишь нескольких отобранных объектов с последующим обобщением оцененных свойств на остальные объекты. Рассматривается развитие взглядов на сущность внутренних репрезентаций, через которые становятся доступны статистики ансамбля: от идеи репрезентации единственной величины (например, для среднего значения признака) до относительно новой идеи «богатой» репрезентации, приблизительно воспроизводящей все распределение признаков предъявленных объектов. Рассматривается роль репрезентации ансамблей в организации восприятия и решении ряда перцептивных задач. Наконец, в обзоре рассматриваются потенциальные нейрофизиологические корреляты восприятия ансамблей и перспективные теоретические модели его нейронных механизмов.

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Section: Discussionmentioning

confidence: 76%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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2020

RJCS

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“…Additional studies were identified from the reference list of the selected empirical articles and previous review articles (Beaton, 1997;Budisavljevic et al, 2020;Driesen & Raz, 1995) and by contacting authors who recently had published corpus callosum data on handedness.…”

Section: Study Identificationmentioning

confidence: 99%

“…Handedness, arguably the most salient functional asymmetry with almost 9 out of 10 individuals being right-handed (Papadatou-Pastou et al, 2020), has also been frequently related to differences in corpus callosum structure and function (for review see, Beaton, 1997;Budisavljevic, Castiello, & Begliomini, 2020). The origin for this line of research can be found in a series of seminal publications by Sandra Witelson (Witelson, 1985(Witelson, , 1989Witelson & Goldsmith, 1991).…”

Section: Introductionmentioning

confidence: 99%

Handedness and midsagittal corpus callosum morphology: A systematic meta-analytic evaluation

Westerhausen

Παπαδάτου-Παστού

2021

Preprint

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Following a series of seminal studies in the 1980s, left or mixed hand preference is widely considered to be associated with a larger corpus callosum, influencing the interpretation of findings and various theories related to inter-hemispheric processing, brain lateralisation, and hand preference. Recent reviews of the literature, however, report inconsistencies in the literature and cast doubt on the existence of such an association. The aim of the present study was to systematically evaluate and meta-analytically integrate the available data on the effect of hand preference on corpus-callosum morphology. For this purpose, articles were identified via a search in PubMed and Web of Science databases. Studies reporting findings relating handedness (assessed as hand preference) and corpus-callosum morphology in healthy participants were considered eligible. On the basis of a total of k = 25 identified studies, random-effects meta-analyses were conducted considering four different group comparisons found in the literature. That is, studies comparing participants of (a) predominantly right- (dRH) and left-hand preference (dLH), (b) consistent right (cRH) and non-cRH preference, (c) cRH with mixed-hand preference (MH), and (d) cRH with consistent left-hand hand preference (cLH). For none of these meta-analyses did we find a significant effect of hand preference, and narrow confidence intervals suggest that the existence of substantial population effect sizes can be excluded. For example, considering the comparison of dRH and dLH, (summarizing k = 14 studies incorporating 1910 dRH and 646 dLH participants) the estimated mean effect size was g = 0.016 (95% confidence interval: -0.12 to 0.15). Thus, the common practice of assuming an increase in callosal connectivity based on hand preference is likely invalid.

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Large‐scale investigation of white matter structural differences in bilingual and monolingual children: An adolescent brain cognitive development data study

Ronderos,

Zuk,

Hernandez

et al. 2024

Human Brain Mapping

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Emerging research has provided valuable insights into the structural characteristics of the bilingual brain from studies of bilingual adults; however, there is a dearth of evidence examining brain structural alterations in childhood associated with the bilingual experience. This study examined the associations between bilingualism and white matter organization in bilingual children compared to monolingual peers leveraging the large‐scale data from the Adolescent Brain Cognitive Development (ABCD) Study. Then, 446 bilingual children (ages 9–10) were identified from the participants in the ABCD data and rigorously matched to a group of 446 monolingual peers. Multiple regression models for selected language and cognitive control white matter pathways were used to compare white matter fractional anisotropy (FA) values between bilinguals and monolinguals, controlling for demographic and environmental factors as covariates in the models. Results revealed significantly lower FA values in bilinguals compared to monolinguals across established dorsal and ventral language network pathways bilaterally (i.e., the superior longitudinal fasciculus and inferior frontal‐occipital fasciculus) and right‐hemispheric pathways in areas related to cognitive control and short‐term memory (i.e., cingulum and parahippocampal cingulum). In contrast to the enhanced FA values observed in adult bilinguals relative to monolinguals, our findings of lower FA in bilingual children relative to monolinguals may suggest a protracted development of white matter pathways associated with language and cognitive control resulting from dual language learning in childhood. Further, these findings underscore the need for large‐scale longitudinal investigation of white matter development in bilingual children to understand neuroplasticity associated with the bilingual experience during this period of heightened language learning.

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Handedness and White Matter Networks

Cited by 32 publications

References 169 publications

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Handedness and midsagittal corpus callosum morphology: A systematic meta-analytic evaluation

Large‐scale investigation of white matter structural differences in bilingual and monolingual children: An adolescent brain cognitive development data study

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