- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03503110
Bridging Brain Structure and Function by Correlating Structural Connectivity, Cortico-Cortical Transmission and Direct Electro-Stimulation
November 15, 2023 updated by: Centre Hospitalier Universitaire de Nice
Anatomo-functional Study of the Brain Cortical and Sub-cortical Connectivity Using Diffusion MRI, Electrocorticography and Direct Electrical Stimulation
Elucidating the structure-function relationship of the brain is one of the main open questions in neuroscience.
The capabilities of diffusion MRI-based (dMRI) techniques to quantify the connectivity strength between brain areas, namely structural connectivity (SC), in combination with modalities such as electroencephalography (EEG) to quantify brain function have enabled advances in this field.
However, so far the actual relationship between SC measures and measures of information transport between neuronal patches has not been determined.
In this project, we aim to establish a relationship between dMRI SC measures, direct measures of electrical properties of the human brain cortex obtained with electrocorticography (ECoG), and response elicited by direct electrostimulation of the brain (DES).
Ten patients operated on awake surgery for brain tumor removal will be included.
First, a dMRI will be acquired prior to the surgery, in order to extract SC indices through probabilistic tractography.
Then, intrasurgical cortico-cortical electrical measures will be obtained by ECoG electrodes positioned on the predefined cortical terminations of the designated bundles.
These measures will be correlated to functional responses obtained during the cortical cartography, following the common DES procedure.
The results of this multi-modal approach combining structure and function explorations of the brain should help to elucidate the relationship between non-invasive (dMRI) SC measures and cortico-cortical transmission properties (delays, transfer functions), and should boost the understanding of cognitive function as well as neurosurgical planning for the treatment of pathologies such as brain tumor resection and drug-resistant epilepsy.
Study Overview
Status
Completed
Conditions
Intervention / Treatment
Study Type
Interventional
Enrollment (Actual)
13
Phase
- Not Applicable
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Locations
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Nice, France
- CHU Nice
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Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
18 years and older (Adult, Older Adult)
Accepts Healthy Volunteers
No
Description
Inclusion Criteria:
- Patient eligible at an awake surgery for a brain tumor resection
- Informed consent of the patient
Exclusion Criteria:
- Contraindication to MRI
- Withdrawal of the patient's consent
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: Other
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
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Experimental: dMRI and electrocorticography
Direct measurements of cortical electrical properties of patients operated on awake surgery for a brain tumor, using electrocorticography (ECoG), based on the dMRI tractography data previously acquired for each patient.
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The investigators aim to establish a relationship between dMRI SC measures, direct measures of electrical properties of the human brain cortex obtained with electrocorticography (ECoG), and response elicited by direct electrostimulation of the brain (DES)
The investigators aim to establish a relationship between dMRI SC measures, direct measures of electrical properties of the human brain cortex obtained with electrocorticography (ECoG), and response elicited by direct electrostimulation of the brain (DES)
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
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Descriptive activity of brain with dMRI results
Time Frame: after the operation (1 month)
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after the operation (1 month)
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Descriptive functional responses elicited by the direct electrostimulation of the cortex.
Time Frame: after the operation (1 month)
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after the operation (1 month)
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Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Publications and helpful links
The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.
General Publications
- Sporns O. The human connectome: origins and challenges. Neuroimage. 2013 Oct 15;80:53-61. doi: 10.1016/j.neuroimage.2013.03.023. Epub 2013 Mar 23.
- Duffau H. Stimulation mapping of white matter tracts to study brain functional connectivity. Nat Rev Neurol. 2015 May;11(5):255-65. doi: 10.1038/nrneurol.2015.51. Epub 2015 Apr 7.
- Yamao Y, Matsumoto R, Kunieda T, Arakawa Y, Kobayashi K, Usami K, Shibata S, Kikuchi T, Sawamoto N, Mikuni N, Ikeda A, Fukuyama H, Miyamoto S. Intraoperative dorsal language network mapping by using single-pulse electrical stimulation. Hum Brain Mapp. 2014 Sep;35(9):4345-61. doi: 10.1002/hbm.22479. Epub 2014 Feb 24.
- Bates E, Wilson SM, Saygin AP, Dick F, Sereno MI, Knight RT, Dronkers NF. Voxel-based lesion-symptom mapping. Nat Neurosci. 2003 May;6(5):448-50. doi: 10.1038/nn1050. No abstract available.
- Szelenyi A, Bello L, Duffau H, Fava E, Feigl GC, Galanda M, Neuloh G, Signorelli F, Sala F; Workgroup for Intraoperative Management in Low-Grade Glioma Surgery within the European Low-Grade Glioma Network. Intraoperative electrical stimulation in awake craniotomy: methodological aspects of current practice. Neurosurg Focus. 2010 Feb;28(2):E7. doi: 10.3171/2009.12.FOCUS09237.
- Leclercq D, Duffau H, Delmaire C, Capelle L, Gatignol P, Ducros M, Chiras J, Lehericy S. Comparison of diffusion tensor imaging tractography of language tracts and intraoperative subcortical stimulations. J Neurosurg. 2010 Mar;112(3):503-11. doi: 10.3171/2009.8.JNS09558.
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start (Actual)
April 19, 2018
Primary Completion (Actual)
September 9, 2019
Study Completion (Actual)
September 9, 2019
Study Registration Dates
First Submitted
March 20, 2018
First Submitted That Met QC Criteria
April 11, 2018
First Posted (Actual)
April 19, 2018
Study Record Updates
Last Update Posted (Estimated)
November 16, 2023
Last Update Submitted That Met QC Criteria
November 15, 2023
Last Verified
November 1, 2023
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 17-PP-15
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
NO
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
No
Studies a U.S. FDA-regulated device product
No
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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