Skip to main content
Log in

Influence of Motor Deficiency and Spatial Neglect on the Contralesional Posterior Parietal Cortex Functional and Structural Connectivity in Stroke Patients

  • Original Paper
  • Published:
Brain Topography Aims and scope Submit manuscript

Abstract

The posterior parietal cortex (PPC) is a key structure for visual attention and upper limb function, two features that could be impaired after stroke, and could be implied in their recovery. If it is well established that stroke is responsible for intra- and interhemispheric connectivity troubles, little is known about those existing for the contralesional PPC. In this study, we aimed at mapping the functional (using resting state fMRI) and structural (using diffusion tensor imagery) networks from 3 subparts of the PPC of the contralesional hemisphere (the anterior intraparietal sulcus), the posterior intraparietal sulcus and the superior parieto-occipital cortex to bilateral frontal areas and ipsilesional homologous PPC parts in 11 chronic stroke patients compared to 13 healthy controls. We also aimed at assessing the relationship between connectivity and the severity of visuospatial and motor deficiencies. We showed that interhemispheric functional and structural connectivity between PPCs was altered in stroke patients compared to controls, without any specificity among seeds. Alterations of parieto-frontal intra- and interhemispheric connectivity were less observed. Neglect severity was associated with several alterations in intra- and interhemispheric connectivity, whereas we did not find any behavioral/connectivity correlations for motor deficiency. The results of this exploratory study shed a new light on the influence of the contralesional PPC in post-stroke patients, they have to be confirmed and refined in further larger studies.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5

Similar content being viewed by others

References

Download references

Funding

Funding

This work was funded by the 2013 “hospital fund to assist emergence and structuring of activities and research teams” from the Lille University Medical Center, Lille, France; and the Rehabilitation Center of the Lille University Medical Center.

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Etienne Allart.

Ethics declarations

Conflicts of interest

The authors declare that they have no conflict of interest.

Additional information

Handling Editor: Stefano Seri.

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Electronic supplementary material

Below is the link to the electronic supplementary material.

10548_2019_749_MOESM1_ESM.docx

Table. Volume of seeds (mean and standard deviation) in mm3 for patients and controls in the native T1 space. Figure. aIPS, pIPS and SPOC overlap between subjects in the MNI space. Supplementary material 1 (DOCX 134 kb)

Flow chart of the study. Supplementary material 2 (DOCX 38 kb)

Results of fiber tracks analyses on SLF components and inter-parietal fibers. Supplementary material 3 (DOCX 370 kb)

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Allart, E., Viard, R., Lopes, R. et al. Influence of Motor Deficiency and Spatial Neglect on the Contralesional Posterior Parietal Cortex Functional and Structural Connectivity in Stroke Patients. Brain Topogr 33, 176–190 (2020). https://doi.org/10.1007/s10548-019-00749-1

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10548-019-00749-1

Keywords

Navigation