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Open Access 22-09-2023 | Transcranial Magnetic Stimulation | Review

Hemispheric Asymmetry in TMS-Induced Effects on Spatial Attention: A Meta-Analysis

Authors: Ting Wang, Tom de Graaf, Lisabel Tanner, Teresa Schuhmann, Felix Duecker, Alexander T. Sack

Published in: Neuropsychology Review

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Abstract

Hemispheric asymmetry is a fundamental principle in the functional architecture of the brain. It plays an important role in attention research where right hemisphere dominance is core to many attention theories. Lesion studies seem to confirm such hemispheric dominance with patients being more likely to develop left hemineglect after right hemispheric stroke than vice versa. However, the underlying concept of hemispheric dominance is still not entirely clear. Brain stimulation studies using transcranial magnetic stimulation (TMS) might be able to illuminate this concept. To examine the putative hemispheric asymmetry in spatial attention, we conducted a meta-analysis of studies applying inhibitory TMS protocols to the left or right posterior parietal cortices (PPC), assessing effects on attention biases with the landmark and line bisection task. A total of 18 studies including 222 participants from 1994 to February 2022 were identified. The analysis revealed a significant shift of the perceived midpoint towards the ipsilateral hemifield after right PPC suppression (Cohen’s d = 0.52), but no significant effect after left PPC suppression (Cohen’s d = 0.26), suggesting a hemispheric asymmetry even though the subgroup difference does not reach significance (p = .06). A complementary Bayesian meta-analysis revealed a high probability of at least a medium effect size after right PPC disruption versus a low probability after left PPC disruption. This is the first quantitative meta-analysis supporting right hemisphere-specific TMS-induced spatial attention deficits, mimicking hemineglect in healthy participants. We discuss the result in the light of prominent attention theories, ultimately concluding how difficult it remains to differentiate between these theories based on attentional bias scores alone.
Literature
go back to reference Babiloni, C., Vecchio, F., Rossi, S., De Capua, A., Bartalini, S., Ulivelli, M., & Rossini, P. M. (2007). Human ventral parietal cortex plays a functional role on visuospatial attention and primary consciousness. A repetitive transcranial magnetic stimulation study. Cerebral Cortex, 17(6), 1486–1492. https://​doi.​org/​10.​1093/​cercor/​bhl060 Babiloni, C., Vecchio, F., Rossi, S., De Capua, A., Bartalini, S., Ulivelli, M., & Rossini, P. M. (2007). Human ventral parietal cortex plays a functional role on visuospatial attention and primary consciousness. A repetitive transcranial magnetic stimulation study. Cerebral Cortex, 17(6), 1486–1492. https://​doi.​org/​10.​1093/​cercor/​bhl060
go back to reference Carpenter, B., Hoffman, M. D., Brubaker, M., Lee, D., Li, P., & Betancourt, M. (2015). The Stan math library: Reverse-mode automatic differentiation in C++. arXiv preprint arXiv. Carpenter, B., Hoffman, M. D., Brubaker, M., Lee, D., Li, P., & Betancourt, M. (2015). The Stan math library: Reverse-mode automatic differentiation in C++. arXiv preprint arXiv.
go back to reference Driver, J., Vuilleumier, P., & Husain, M. (2004). Spatial neglect and extinction. Cognitive Neurosciences Iii, Third Edition, 589–606. Driver, J., Vuilleumier, P., & Husain, M. (2004). Spatial neglect and extinction. Cognitive Neurosciences Iii, Third Edition, 589–606.
go back to reference Harrer, M., Cuijpers, P., Furukawa, T. A., & Ebert, D. D. (2021). Doing meta-analysis with R: A hands-on guide.: Chapman and Hall/CRC. Harrer, M., Cuijpers, P., Furukawa, T. A., & Ebert, D. D. (2021). Doing meta-analysis with R: A hands-on guide.: Chapman and Hall/CRC.
go back to reference Higgins, J. P., Li, T., & Deeks, J. J. (2019). Choosing effect measures and computing estimates of effect. Cochrane handbook for systematic reviews of interventions, 143–176. Higgins, J. P., Li, T., & Deeks, J. J. (2019). Choosing effect measures and computing estimates of effect. Cochrane handbook for systematic reviews of interventions, 143–176.
go back to reference Kinsbourne, M. (1977). Hemi-neglect and hemisphere rivalry. Advances in Neurology, 18, 41–49. PubMed Kinsbourne, M. (1977). Hemi-neglect and hemisphere rivalry. Advances in Neurology, 18, 41–49. PubMed
go back to reference Lipsey, M. W., & Wilson, D. B. (2001). Practical meta-analysis: SAGE publications, Inc. Lipsey, M. W., & Wilson, D. B. (2001). Practical meta-analysis: SAGE publications, Inc.
Metadata
Title
Hemispheric Asymmetry in TMS-Induced Effects on Spatial Attention: A Meta-Analysis
Authors
Ting Wang
Tom de Graaf
Lisabel Tanner
Teresa Schuhmann
Felix Duecker
Alexander T. Sack
Publication date
22-09-2023
Publisher
Springer US
Published in
Neuropsychology Review
Print ISSN: 1040-7308
Electronic ISSN: 1573-6660
DOI
https://doi.org/10.1007/s11065-023-09614-2