Cited by 452Stroke Rehabilitation and RecoveryTranscranial Magnetic Stimulation StudiesMotor Control and Adaptation

Multimodal imaging of brain reorganization in motor areas of the contralesional hemisphere of well recovered patients after capsular stroke

Gerloff, Christian, Bushara, Khalaf, Sailer, Alexandra, Wassermann, Eric M., Chen, Robert, Matsuoka, Takahiro, Waldvogel, Daniel, Wittenberg, George F. +3 more·2006·Brain

Abstract

Clinical recovery after stroke can be significant and has been attributed to plastic reorganization and recruitment of novel areas previously not engaged in a given task. As equivocal results have been reported in studies using single imaging or electrophysiological methods, here we applied an integrative multimodal approach to a group of well-recovered chronic stroke patients (n = 11; aged 50-81 years) with left capsular lesions. Focal activation during recovered hand movements was assessed with EEG spectral analysis and H2(15)O-PET with EMG monitoring, cortico-cortical connectivity with EEG coherence analysis (cortico-cortical coherence) and corticospinal connectivity with transcranial magnetic stimulation (TMS). As seen from comparisons with age-matched controls, our patients showed enhanced recruitment of the lateral premotor cortex of the lesioned hemisphere [Brodmann area (BA) 6], lateral premotor and to a lesser extent primary sensorimotor and parietal cortex of the contralesional hemisphere (CON-H; BA 4 and superior parietal lobule) and left cerebellum (patients versus controls, Z > 3.09). EEG coherence analysis showed that after stroke cortico-cortical connections were reduced in the stroke hemisphere but relatively increased in the CON-H (ANOVA, contrast analysis, P < 0.05), suggesting a shift of functional connectivity towards the CON-H. Nevertheless, fast conducting corticospinal transmission originated exclusively from the lesioned hemisphere. No direct ipsilateral motor evoked potentials (MEPs) could be elicited with TMS over the contralesional primary motor cortex (iM1) in stroke patients. We conclude that (i) effective recovery is based on enhanced utilization of ipsi- and contralesional resources, (ii) basic corticospinal commands arise from the lesioned hemisphere without recruitment of ('latent') uncrossed corticospinal tract fibres and (iii) increased contralesional activity probably facilitates control of recovered motor function by operating at a higher-order processing level, similar to but not identical with the extended network concerned with complex movements in healthy subjects.

Integrity signals

Registry

Crossref · 10.1093/brain/awh713

Cites

130 of 130 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Gerloff, C., Bushara, K., Sailer, A., Wassermann, E. M., Chen, R., Matsuoka, T., Waldvogel, D., Wittenberg, G. F., Ishii, K., Cohen, L. G., & Hallett, M.
Affiliations
  • University of Tübingen (DE)
  • National Institutes of Health (US)
Corresponding author
Gerloff, Christian
Venue
Brain
Published
2005-12-19
Volume
129
Issue
3
Pages
791-808
ISSN
  • 0006-8950 (ISSN-L)
  • 1460-2156
OpenAlex
W2100254792
Cited by
452
References
130
Citations by year
2026: 7 · 2025: 10 · 2024: 13 · 2023: 22 · 2022: 24 · 2021: 16 · 2020: 20 · 2019: 20 · 2018: 21 · 2017: 30 · 2016: 22 · 2015: 20 · 2014: 27 · 2013: 31 · 2012: 36
FWCI
20.89
Type
journal article
Language
en
Open access
closed
Locations
  • Brain (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Deutsche Forschungsgemeinschaft (SFB 307, SFB 550)
  • National Institutes of Health
Topics
  • Health Sciences › Medicine › Rehabilitation › Stroke Rehabilitation and Recovery
  • Life Sciences › Neuroscience › Neurology › Transcranial Magnetic Stimulation Studies
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Motor Control and Adaptation
Keywords
stroke recovery, brain reorganization, contralesional hemisphere, lateral premotor cortex, corticocortical connections, motor evoked potentials, cerebellum, EEG coherence, transcranial magnetic stimulation, hand movement, chronic stroke
MeSH terms
Stroke Rehabilitation, Aged, Aged, 80 and over, Brain Mapping, Cerebrovascular Circulation, Chronic Disease, Electroencephalography, Female, Hand, Humans, Male, Middle Aged, Motor Cortex, Movement, Neuronal Plasticity, Evoked Potentials, Motor, Stroke, Positron-Emission Tomography, Transcranial Magnetic Stimulation

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review