Morphological analysis and functional connectivity of the insular in patients with dysphagia after cerebral infarction based on resting-state fMRI
Objective The insula, as a critical hub for multimodal information integration, plays a pivotal role in post-stroke dysphagia(PSD). However, the mechanisms underlying its structural and functional network reorganization remain elusive. This study aims to systematically investigate the alterations in...
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| Veröffentlicht in: | BMC neurology Jg. 25; H. 1; S. 307 - 13 |
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| Hauptverfasser: | , , , , , , , , , |
| Format: | Journal Article |
| Sprache: | Englisch |
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BioMed Central
30.07.2025
BioMed Central Ltd Springer Nature B.V BMC |
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| ISSN: | 1471-2377, 1471-2377 |
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| Abstract | Objective
The insula, as a critical hub for multimodal information integration, plays a pivotal role in post-stroke dysphagia(PSD). However, the mechanisms underlying its structural and functional network reorganization remain elusive. This study aims to systematically investigate the alterations in gray matter volume and functional connectivity patterns of the insula in patients with dysphagia after cerebral infarction using multimodal neuroimaging techniques, and to untangle their clinical associations with swallowing function impairments.
Methods
Three groups of subjects were recruited: healthy controls (HC,
n
= 15), cerebral infarction patients without dysphagia (ND,
n
= 13), and cerebral infarction patients with dysphagia (DYS,
n
= 11). Resting-state functional magnetic resonance imaging (rs-fMRI) and high-resolution T1-weighted structural imaging data were acquired. Seed-based analysis (using the CONN FC toolbox) was employed to quantify the whole-brain functional connectivity (FC) of the insula, and voxel-based morphometry (VBM) was used to assess gray matter volume changes. Swallowing function was standardized using the Fiberoptic Endoscopic Evaluation of Swallowing (FEES) and the Penetration/Aspiration Scale (PAS).
Results
The DYS, ND, and HC groups showed significant differences in grey matter volume in the left insula (
p
FDR =0.041). Compared to the HC group, both cerebral infarction groups (ND and DYS) demonstrated increased functional connectivity between the left insula and the left lateral occipital cortex (superior division), left precuneus, and left cerebellum. In contrast, functional connectivity with the right insula cortex, right frontal operculum cortex, left anterior cingulate, and right frontal pole was decreased. Among these differences, compared to the ND group, the DYS group showed a more significant reduction in functional connectivity within the right frontal operculum cortex and a more pronounced increase in functional connectivity within the left lateral occipital cortex superior division and left cerebellum. Compared to the HC group, patients in both cerebral infarction groups (ND and DYS) showed significantly enhanced functional connectivity between the right insula and the right posterior cingulate gyrus, left lateral occipital cortex (superior division), right precuneus, left frontal pole and right frontal pole. Conversely, functional connectivity with the left insula cortex and left anterior cingulate gyrus was significantly reduced. Moreover, compared to the ND group, the DYS group demonstrated more pronounced increases in functional connectivity within the right posterior cingulate gyrus and right superior cerebellar peduncle, along with a more significant decrease in functional connectivity within the right insula cortex. Enhanced FC between the left insula and the left lateral occipital cortex (superior division) correlated positively with PAS, while enhanced FC between the right insula and the right cerebellum correlated negatively with PAS.
Conclusion
Our study found left insular gray matter atrophy underlies the pathology of PSD, and abnormal insular functional connectivity is key to its development. The severity of post-stroke dysphagia can affect the functional connectivity between the insula and the right cerebellum as well as the left occipital lobe. These results reveal potential neural compensation mechanisms in PSD and offer new directions for clinical prognostic biomarker development. |
|---|---|
| AbstractList | Objective The insula, as a critical hub for multimodal information integration, plays a pivotal role in post-stroke dysphagia(PSD). However, the mechanisms underlying its structural and functional network reorganization remain elusive. This study aims to systematically investigate the alterations in gray matter volume and functional connectivity patterns of the insula in patients with dysphagia after cerebral infarction using multimodal neuroimaging techniques, and to untangle their clinical associations with swallowing function impairments. Methods Three groups of subjects were recruited: healthy controls (HC, n = 15), cerebral infarction patients without dysphagia (ND, n = 13), and cerebral infarction patients with dysphagia (DYS, n = 11). Resting-state functional magnetic resonance imaging (rs-fMRI) and high-resolution T1-weighted structural imaging data were acquired. Seed-based analysis (using the CONN FC toolbox) was employed to quantify the whole-brain functional connectivity (FC) of the insula, and voxel-based morphometry (VBM) was used to assess gray matter volume changes. Swallowing function was standardized using the Fiberoptic Endoscopic Evaluation of Swallowing (FEES) and the Penetration/Aspiration Scale (PAS). Results The DYS, ND, and HC groups showed significant differences in grey matter volume in the left insula (pFDR =0.041). Compared to the HC group, both cerebral infarction groups (ND and DYS) demonstrated increased functional connectivity between the left insula and the left lateral occipital cortex (superior division), left precuneus, and left cerebellum. In contrast, functional connectivity with the right insula cortex, right frontal operculum cortex, left anterior cingulate, and right frontal pole was decreased. Among these differences, compared to the ND group, the DYS group showed a more significant reduction in functional connectivity within the right frontal operculum cortex and a more pronounced increase in functional connectivity within the left lateral occipital cortex superior division and left cerebellum. Compared to the HC group, patients in both cerebral infarction groups (ND and DYS) showed significantly enhanced functional connectivity between the right insula and the right posterior cingulate gyrus, left lateral occipital cortex (superior division), right precuneus, left frontal pole and right frontal pole. Conversely, functional connectivity with the left insula cortex and left anterior cingulate gyrus was significantly reduced. Moreover, compared to the ND group, the DYS group demonstrated more pronounced increases in functional connectivity within the right posterior cingulate gyrus and right superior cerebellar peduncle, along with a more significant decrease in functional connectivity within the right insula cortex. Enhanced FC between the left insula and the left lateral occipital cortex (superior division) correlated positively with PAS, while enhanced FC between the right insula and the right cerebellum correlated negatively with PAS. Conclusion Our study found left insular gray matter atrophy underlies the pathology of PSD, and abnormal insular functional connectivity is key to its development. The severity of post-stroke dysphagia can affect the functional connectivity between the insula and the right cerebellum as well as the left occipital lobe. These results reveal potential neural compensation mechanisms in PSD and offer new directions for clinical prognostic biomarker development. Keywords: Dysphagia, Insula, Gray matter volume, Resting-state functional magnetic resonance imaging, Functional The insula, as a critical hub for multimodal information integration, plays a pivotal role in post-stroke dysphagia(PSD). However, the mechanisms underlying its structural and functional network reorganization remain elusive. This study aims to systematically investigate the alterations in gray matter volume and functional connectivity patterns of the insula in patients with dysphagia after cerebral infarction using multimodal neuroimaging techniques, and to untangle their clinical associations with swallowing function impairments. Three groups of subjects were recruited: healthy controls (HC, n = 15), cerebral infarction patients without dysphagia (ND, n = 13), and cerebral infarction patients with dysphagia (DYS, n = 11). Resting-state functional magnetic resonance imaging (rs-fMRI) and high-resolution T1-weighted structural imaging data were acquired. Seed-based analysis (using the CONN FC toolbox) was employed to quantify the whole-brain functional connectivity (FC) of the insula, and voxel-based morphometry (VBM) was used to assess gray matter volume changes. Swallowing function was standardized using the Fiberoptic Endoscopic Evaluation of Swallowing (FEES) and the Penetration/Aspiration Scale (PAS). The DYS, ND, and HC groups showed significant differences in grey matter volume in the left insula (pFDR =0.041). Compared to the HC group, both cerebral infarction groups (ND and DYS) demonstrated increased functional connectivity between the left insula and the left lateral occipital cortex (superior division), left precuneus, and left cerebellum. In contrast, functional connectivity with the right insula cortex, right frontal operculum cortex, left anterior cingulate, and right frontal pole was decreased. Among these differences, compared to the ND group, the DYS group showed a more significant reduction in functional connectivity within the right frontal operculum cortex and a more pronounced increase in functional connectivity within the left lateral occipital cortex superior division and left cerebellum. Compared to the HC group, patients in both cerebral infarction groups (ND and DYS) showed significantly enhanced functional connectivity between the right insula and the right posterior cingulate gyrus, left lateral occipital cortex (superior division), right precuneus, left frontal pole and right frontal pole. Conversely, functional connectivity with the left insula cortex and left anterior cingulate gyrus was significantly reduced. Moreover, compared to the ND group, the DYS group demonstrated more pronounced increases in functional connectivity within the right posterior cingulate gyrus and right superior cerebellar peduncle, along with a more significant decrease in functional connectivity within the right insula cortex. Enhanced FC between the left insula and the left lateral occipital cortex (superior division) correlated positively with PAS, while enhanced FC between the right insula and the right cerebellum correlated negatively with PAS. Our study found left insular gray matter atrophy underlies the pathology of PSD, and abnormal insular functional connectivity is key to its development. The severity of post-stroke dysphagia can affect the functional connectivity between the insula and the right cerebellum as well as the left occipital lobe. These results reveal potential neural compensation mechanisms in PSD and offer new directions for clinical prognostic biomarker development. The insula, as a critical hub for multimodal information integration, plays a pivotal role in post-stroke dysphagia(PSD). However, the mechanisms underlying its structural and functional network reorganization remain elusive. This study aims to systematically investigate the alterations in gray matter volume and functional connectivity patterns of the insula in patients with dysphagia after cerebral infarction using multimodal neuroimaging techniques, and to untangle their clinical associations with swallowing function impairments.OBJECTIVEThe insula, as a critical hub for multimodal information integration, plays a pivotal role in post-stroke dysphagia(PSD). However, the mechanisms underlying its structural and functional network reorganization remain elusive. This study aims to systematically investigate the alterations in gray matter volume and functional connectivity patterns of the insula in patients with dysphagia after cerebral infarction using multimodal neuroimaging techniques, and to untangle their clinical associations with swallowing function impairments.Three groups of subjects were recruited: healthy controls (HC, n = 15), cerebral infarction patients without dysphagia (ND, n = 13), and cerebral infarction patients with dysphagia (DYS, n = 11). Resting-state functional magnetic resonance imaging (rs-fMRI) and high-resolution T1-weighted structural imaging data were acquired. Seed-based analysis (using the CONN FC toolbox) was employed to quantify the whole-brain functional connectivity (FC) of the insula, and voxel-based morphometry (VBM) was used to assess gray matter volume changes. Swallowing function was standardized using the Fiberoptic Endoscopic Evaluation of Swallowing (FEES) and the Penetration/Aspiration Scale (PAS).METHODSThree groups of subjects were recruited: healthy controls (HC, n = 15), cerebral infarction patients without dysphagia (ND, n = 13), and cerebral infarction patients with dysphagia (DYS, n = 11). Resting-state functional magnetic resonance imaging (rs-fMRI) and high-resolution T1-weighted structural imaging data were acquired. Seed-based analysis (using the CONN FC toolbox) was employed to quantify the whole-brain functional connectivity (FC) of the insula, and voxel-based morphometry (VBM) was used to assess gray matter volume changes. Swallowing function was standardized using the Fiberoptic Endoscopic Evaluation of Swallowing (FEES) and the Penetration/Aspiration Scale (PAS).The DYS, ND, and HC groups showed significant differences in grey matter volume in the left insula (pFDR =0.041). Compared to the HC group, both cerebral infarction groups (ND and DYS) demonstrated increased functional connectivity between the left insula and the left lateral occipital cortex (superior division), left precuneus, and left cerebellum. In contrast, functional connectivity with the right insula cortex, right frontal operculum cortex, left anterior cingulate, and right frontal pole was decreased. Among these differences, compared to the ND group, the DYS group showed a more significant reduction in functional connectivity within the right frontal operculum cortex and a more pronounced increase in functional connectivity within the left lateral occipital cortex superior division and left cerebellum. Compared to the HC group, patients in both cerebral infarction groups (ND and DYS) showed significantly enhanced functional connectivity between the right insula and the right posterior cingulate gyrus, left lateral occipital cortex (superior division), right precuneus, left frontal pole and right frontal pole. Conversely, functional connectivity with the left insula cortex and left anterior cingulate gyrus was significantly reduced. Moreover, compared to the ND group, the DYS group demonstrated more pronounced increases in functional connectivity within the right posterior cingulate gyrus and right superior cerebellar peduncle, along with a more significant decrease in functional connectivity within the right insula cortex. Enhanced FC between the left insula and the left lateral occipital cortex (superior division) correlated positively with PAS, while enhanced FC between the right insula and the right cerebellum correlated negatively with PAS.RESULTSThe DYS, ND, and HC groups showed significant differences in grey matter volume in the left insula (pFDR =0.041). Compared to the HC group, both cerebral infarction groups (ND and DYS) demonstrated increased functional connectivity between the left insula and the left lateral occipital cortex (superior division), left precuneus, and left cerebellum. In contrast, functional connectivity with the right insula cortex, right frontal operculum cortex, left anterior cingulate, and right frontal pole was decreased. Among these differences, compared to the ND group, the DYS group showed a more significant reduction in functional connectivity within the right frontal operculum cortex and a more pronounced increase in functional connectivity within the left lateral occipital cortex superior division and left cerebellum. Compared to the HC group, patients in both cerebral infarction groups (ND and DYS) showed significantly enhanced functional connectivity between the right insula and the right posterior cingulate gyrus, left lateral occipital cortex (superior division), right precuneus, left frontal pole and right frontal pole. Conversely, functional connectivity with the left insula cortex and left anterior cingulate gyrus was significantly reduced. Moreover, compared to the ND group, the DYS group demonstrated more pronounced increases in functional connectivity within the right posterior cingulate gyrus and right superior cerebellar peduncle, along with a more significant decrease in functional connectivity within the right insula cortex. Enhanced FC between the left insula and the left lateral occipital cortex (superior division) correlated positively with PAS, while enhanced FC between the right insula and the right cerebellum correlated negatively with PAS.Our study found left insular gray matter atrophy underlies the pathology of PSD, and abnormal insular functional connectivity is key to its development. The severity of post-stroke dysphagia can affect the functional connectivity between the insula and the right cerebellum as well as the left occipital lobe. These results reveal potential neural compensation mechanisms in PSD and offer new directions for clinical prognostic biomarker development.CONCLUSIONOur study found left insular gray matter atrophy underlies the pathology of PSD, and abnormal insular functional connectivity is key to its development. The severity of post-stroke dysphagia can affect the functional connectivity between the insula and the right cerebellum as well as the left occipital lobe. These results reveal potential neural compensation mechanisms in PSD and offer new directions for clinical prognostic biomarker development. ObjectiveThe insula, as a critical hub for multimodal information integration, plays a pivotal role in post-stroke dysphagia(PSD). However, the mechanisms underlying its structural and functional network reorganization remain elusive. This study aims to systematically investigate the alterations in gray matter volume and functional connectivity patterns of the insula in patients with dysphagia after cerebral infarction using multimodal neuroimaging techniques, and to untangle their clinical associations with swallowing function impairments.MethodsThree groups of subjects were recruited: healthy controls (HC, n = 15), cerebral infarction patients without dysphagia (ND, n = 13), and cerebral infarction patients with dysphagia (DYS, n = 11). Resting-state functional magnetic resonance imaging (rs-fMRI) and high-resolution T1-weighted structural imaging data were acquired. Seed-based analysis (using the CONN FC toolbox) was employed to quantify the whole-brain functional connectivity (FC) of the insula, and voxel-based morphometry (VBM) was used to assess gray matter volume changes. Swallowing function was standardized using the Fiberoptic Endoscopic Evaluation of Swallowing (FEES) and the Penetration/Aspiration Scale (PAS).ResultsThe DYS, ND, and HC groups showed significant differences in grey matter volume in the left insula (pFDR =0.041). Compared to the HC group, both cerebral infarction groups (ND and DYS) demonstrated increased functional connectivity between the left insula and the left lateral occipital cortex (superior division), left precuneus, and left cerebellum. In contrast, functional connectivity with the right insula cortex, right frontal operculum cortex, left anterior cingulate, and right frontal pole was decreased. Among these differences, compared to the ND group, the DYS group showed a more significant reduction in functional connectivity within the right frontal operculum cortex and a more pronounced increase in functional connectivity within the left lateral occipital cortex superior division and left cerebellum. Compared to the HC group, patients in both cerebral infarction groups (ND and DYS) showed significantly enhanced functional connectivity between the right insula and the right posterior cingulate gyrus, left lateral occipital cortex (superior division), right precuneus, left frontal pole and right frontal pole. Conversely, functional connectivity with the left insula cortex and left anterior cingulate gyrus was significantly reduced. Moreover, compared to the ND group, the DYS group demonstrated more pronounced increases in functional connectivity within the right posterior cingulate gyrus and right superior cerebellar peduncle, along with a more significant decrease in functional connectivity within the right insula cortex. Enhanced FC between the left insula and the left lateral occipital cortex (superior division) correlated positively with PAS, while enhanced FC between the right insula and the right cerebellum correlated negatively with PAS.ConclusionOur study found left insular gray matter atrophy underlies the pathology of PSD, and abnormal insular functional connectivity is key to its development. The severity of post-stroke dysphagia can affect the functional connectivity between the insula and the right cerebellum as well as the left occipital lobe. These results reveal potential neural compensation mechanisms in PSD and offer new directions for clinical prognostic biomarker development. Objective The insula, as a critical hub for multimodal information integration, plays a pivotal role in post-stroke dysphagia(PSD). However, the mechanisms underlying its structural and functional network reorganization remain elusive. This study aims to systematically investigate the alterations in gray matter volume and functional connectivity patterns of the insula in patients with dysphagia after cerebral infarction using multimodal neuroimaging techniques, and to untangle their clinical associations with swallowing function impairments. Methods Three groups of subjects were recruited: healthy controls (HC, n = 15), cerebral infarction patients without dysphagia (ND, n = 13), and cerebral infarction patients with dysphagia (DYS, n = 11). Resting-state functional magnetic resonance imaging (rs-fMRI) and high-resolution T1-weighted structural imaging data were acquired. Seed-based analysis (using the CONN FC toolbox) was employed to quantify the whole-brain functional connectivity (FC) of the insula, and voxel-based morphometry (VBM) was used to assess gray matter volume changes. Swallowing function was standardized using the Fiberoptic Endoscopic Evaluation of Swallowing (FEES) and the Penetration/Aspiration Scale (PAS). Results The DYS, ND, and HC groups showed significant differences in grey matter volume in the left insula ( p FDR =0.041). Compared to the HC group, both cerebral infarction groups (ND and DYS) demonstrated increased functional connectivity between the left insula and the left lateral occipital cortex (superior division), left precuneus, and left cerebellum. In contrast, functional connectivity with the right insula cortex, right frontal operculum cortex, left anterior cingulate, and right frontal pole was decreased. Among these differences, compared to the ND group, the DYS group showed a more significant reduction in functional connectivity within the right frontal operculum cortex and a more pronounced increase in functional connectivity within the left lateral occipital cortex superior division and left cerebellum. Compared to the HC group, patients in both cerebral infarction groups (ND and DYS) showed significantly enhanced functional connectivity between the right insula and the right posterior cingulate gyrus, left lateral occipital cortex (superior division), right precuneus, left frontal pole and right frontal pole. Conversely, functional connectivity with the left insula cortex and left anterior cingulate gyrus was significantly reduced. Moreover, compared to the ND group, the DYS group demonstrated more pronounced increases in functional connectivity within the right posterior cingulate gyrus and right superior cerebellar peduncle, along with a more significant decrease in functional connectivity within the right insula cortex. Enhanced FC between the left insula and the left lateral occipital cortex (superior division) correlated positively with PAS, while enhanced FC between the right insula and the right cerebellum correlated negatively with PAS. Conclusion Our study found left insular gray matter atrophy underlies the pathology of PSD, and abnormal insular functional connectivity is key to its development. The severity of post-stroke dysphagia can affect the functional connectivity between the insula and the right cerebellum as well as the left occipital lobe. These results reveal potential neural compensation mechanisms in PSD and offer new directions for clinical prognostic biomarker development. The insula, as a critical hub for multimodal information integration, plays a pivotal role in post-stroke dysphagia(PSD). However, the mechanisms underlying its structural and functional network reorganization remain elusive. This study aims to systematically investigate the alterations in gray matter volume and functional connectivity patterns of the insula in patients with dysphagia after cerebral infarction using multimodal neuroimaging techniques, and to untangle their clinical associations with swallowing function impairments. Three groups of subjects were recruited: healthy controls (HC, n = 15), cerebral infarction patients without dysphagia (ND, n = 13), and cerebral infarction patients with dysphagia (DYS, n = 11). Resting-state functional magnetic resonance imaging (rs-fMRI) and high-resolution T1-weighted structural imaging data were acquired. Seed-based analysis (using the CONN FC toolbox) was employed to quantify the whole-brain functional connectivity (FC) of the insula, and voxel-based morphometry (VBM) was used to assess gray matter volume changes. Swallowing function was standardized using the Fiberoptic Endoscopic Evaluation of Swallowing (FEES) and the Penetration/Aspiration Scale (PAS). The DYS, ND, and HC groups showed significant differences in grey matter volume in the left insula (pFDR =0.041). Compared to the HC group, both cerebral infarction groups (ND and DYS) demonstrated increased functional connectivity between the left insula and the left lateral occipital cortex (superior division), left precuneus, and left cerebellum. In contrast, functional connectivity with the right insula cortex, right frontal operculum cortex, left anterior cingulate, and right frontal pole was decreased. Among these differences, compared to the ND group, the DYS group showed a more significant reduction in functional connectivity within the right frontal operculum cortex and a more pronounced increase in functional connectivity within the left lateral occipital cortex superior division and left cerebellum. Compared to the HC group, patients in both cerebral infarction groups (ND and DYS) showed significantly enhanced functional connectivity between the right insula and the right posterior cingulate gyrus, left lateral occipital cortex (superior division), right precuneus, left frontal pole and right frontal pole. Conversely, functional connectivity with the left insula cortex and left anterior cingulate gyrus was significantly reduced. Moreover, compared to the ND group, the DYS group demonstrated more pronounced increases in functional connectivity within the right posterior cingulate gyrus and right superior cerebellar peduncle, along with a more significant decrease in functional connectivity within the right insula cortex. Enhanced FC between the left insula and the left lateral occipital cortex (superior division) correlated positively with PAS, while enhanced FC between the right insula and the right cerebellum correlated negatively with PAS. Our study found left insular gray matter atrophy underlies the pathology of PSD, and abnormal insular functional connectivity is key to its development. The severity of post-stroke dysphagia can affect the functional connectivity between the insula and the right cerebellum as well as the left occipital lobe. These results reveal potential neural compensation mechanisms in PSD and offer new directions for clinical prognostic biomarker development. Abstract Objective The insula, as a critical hub for multimodal information integration, plays a pivotal role in post-stroke dysphagia(PSD). However, the mechanisms underlying its structural and functional network reorganization remain elusive. This study aims to systematically investigate the alterations in gray matter volume and functional connectivity patterns of the insula in patients with dysphagia after cerebral infarction using multimodal neuroimaging techniques, and to untangle their clinical associations with swallowing function impairments. Methods Three groups of subjects were recruited: healthy controls (HC, n = 15), cerebral infarction patients without dysphagia (ND, n = 13), and cerebral infarction patients with dysphagia (DYS, n = 11). Resting-state functional magnetic resonance imaging (rs-fMRI) and high-resolution T1-weighted structural imaging data were acquired. Seed-based analysis (using the CONN FC toolbox) was employed to quantify the whole-brain functional connectivity (FC) of the insula, and voxel-based morphometry (VBM) was used to assess gray matter volume changes. Swallowing function was standardized using the Fiberoptic Endoscopic Evaluation of Swallowing (FEES) and the Penetration/Aspiration Scale (PAS). Results The DYS, ND, and HC groups showed significant differences in grey matter volume in the left insula (pFDR =0.041). Compared to the HC group, both cerebral infarction groups (ND and DYS) demonstrated increased functional connectivity between the left insula and the left lateral occipital cortex (superior division), left precuneus, and left cerebellum. In contrast, functional connectivity with the right insula cortex, right frontal operculum cortex, left anterior cingulate, and right frontal pole was decreased. Among these differences, compared to the ND group, the DYS group showed a more significant reduction in functional connectivity within the right frontal operculum cortex and a more pronounced increase in functional connectivity within the left lateral occipital cortex superior division and left cerebellum. Compared to the HC group, patients in both cerebral infarction groups (ND and DYS) showed significantly enhanced functional connectivity between the right insula and the right posterior cingulate gyrus, left lateral occipital cortex (superior division), right precuneus, left frontal pole and right frontal pole. Conversely, functional connectivity with the left insula cortex and left anterior cingulate gyrus was significantly reduced. Moreover, compared to the ND group, the DYS group demonstrated more pronounced increases in functional connectivity within the right posterior cingulate gyrus and right superior cerebellar peduncle, along with a more significant decrease in functional connectivity within the right insula cortex. Enhanced FC between the left insula and the left lateral occipital cortex (superior division) correlated positively with PAS, while enhanced FC between the right insula and the right cerebellum correlated negatively with PAS. Conclusion Our study found left insular gray matter atrophy underlies the pathology of PSD, and abnormal insular functional connectivity is key to its development. The severity of post-stroke dysphagia can affect the functional connectivity between the insula and the right cerebellum as well as the left occipital lobe. These results reveal potential neural compensation mechanisms in PSD and offer new directions for clinical prognostic biomarker development. |
| ArticleNumber | 307 |
| Audience | Academic |
| Author | Bai, Chen Li, Bingjie Zhang, Hongxia Li, Haoyuan Zhao, Jun Yu, Weiyong Zhang, Qingsu Zhang, Tong Yuan, Yongxue Guo, Ming |
| Author_xml | – sequence: 1 givenname: Ming surname: Guo fullname: Guo, Ming organization: School of Rehabilitation, Capital Medical University, Beijing Bo’ai Hospital, China Rehabilitation Research Center – sequence: 2 givenname: Bingjie surname: Li fullname: Li, Bingjie organization: School of Rehabilitation, Capital Medical University, Beijing Bo’ai Hospital, China Rehabilitation Research Center – sequence: 3 givenname: Jun surname: Zhao fullname: Zhao, Jun organization: School of Rehabilitation, Capital Medical University, Beijing Bo’ai Hospital, China Rehabilitation Research Center – sequence: 4 givenname: Chen surname: Bai fullname: Bai, Chen organization: Department of rehabilitation medicine, Shandong Provincial Hospital, Shandong First Medical University – sequence: 5 givenname: Weiyong surname: Yu fullname: Yu, Weiyong organization: Beijing Bo’ai Hospital, China Rehabilitation Research Center – sequence: 6 givenname: Hongxia surname: Zhang fullname: Zhang, Hongxia organization: Beijing Bo’ai Hospital, China Rehabilitation Research Center – sequence: 7 givenname: Haoyuan surname: Li fullname: Li, Haoyuan organization: Department of Radiology, Beijing Children’s Hospital, Capital Medical University, National Center for Children’s Health – sequence: 8 givenname: Yongxue surname: Yuan fullname: Yuan, Yongxue organization: Beijing Bo’ai Hospital, China Rehabilitation Research Center – sequence: 9 givenname: Qingsu surname: Zhang fullname: Zhang, Qingsu organization: Beijing Bo’ai Hospital, China Rehabilitation Research Center – sequence: 10 givenname: Tong surname: Zhang fullname: Zhang, Tong email: tommzhang@163.com organization: School of Rehabilitation, Capital Medical University, Beijing Bo’ai Hospital, China Rehabilitation Research Center |
| BackLink | https://www.ncbi.nlm.nih.gov/pubmed/40739609$$D View this record in MEDLINE/PubMed |
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| DOI | 10.1186/s12883-025-04322-1 |
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| Keywords | Functional Insula Dysphagia Gray matter volume Resting-state functional magnetic resonance imaging |
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The insula, as a critical hub for multimodal information integration, plays a pivotal role in post-stroke dysphagia(PSD). However, the mechanisms... The insula, as a critical hub for multimodal information integration, plays a pivotal role in post-stroke dysphagia(PSD). However, the mechanisms underlying... Objective The insula, as a critical hub for multimodal information integration, plays a pivotal role in post-stroke dysphagia(PSD). However, the mechanisms... ObjectiveThe insula, as a critical hub for multimodal information integration, plays a pivotal role in post-stroke dysphagia(PSD). However, the mechanisms... Abstract Objective The insula, as a critical hub for multimodal information integration, plays a pivotal role in post-stroke dysphagia(PSD). However, the... |
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| SubjectTerms | Activities of daily living Aged Analysis Atrophy Automation Brain Brain research Care and treatment Cerebellum Cerebral Cortex - pathology Cerebral infarction Cerebral Infarction - complications Cerebral Infarction - diagnostic imaging Cerebral Infarction - pathology Cerebral Infarction - physiopathology Complications and side effects Cortex (frontal) Cortex (insular) Cortex (parietal) Data analysis Deglutition disorders Deglutition Disorders - diagnostic imaging Deglutition Disorders - etiology Deglutition Disorders - pathology Deglutition Disorders - physiopathology Diagnosis Dysphagia Female Functional Functional magnetic resonance imaging Gray Matter - diagnostic imaging Gray Matter - pathology Gray matter volume Humans Insula Insular Cortex - diagnostic imaging Insular Cortex - pathology Insular Cortex - physiopathology Magnetic Resonance Imaging Male Management information systems Medicine Medicine & Public Health Middle Aged Morphological variation Morphometry Neural networks Neurochemistry Neuroimaging Neurology Neurosurgery Occipital lobe Operculum Rehabilitation Rest Resting-state functional magnetic resonance imaging Risk factors Sensory integration Software Stroke Stroke (Disease) Structure-function relationships Substantia grisea Superior cerebellar peduncle Swallowing |
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| Title | Morphological analysis and functional connectivity of the insular in patients with dysphagia after cerebral infarction based on resting-state fMRI |
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