Electrocorticography in Mapping Functional Brain Areas During Surgery in Patients With Brain Tumors

Study Purpose

This pilot clinical trial studies how well electrocorticography works in mapping functional brain areas during surgery in patients with brain tumors. Using a larger than the standard mapping grid currently used during brain tumor surgery or a high-definition grid for electrocorticogram brain mapping may help doctors to better identify which areas of the brain are active during specific limb movement and speech during surgery in patients with brain tumors.

Recruitment Criteria

Accepts Healthy Volunteers

Healthy volunteers are participants who do not have a disease or condition, or related conditions or symptoms

Study Type

An interventional clinical study is where participants are assigned to receive one or more interventions (or no intervention) so that researchers can evaluate the effects of the interventions on biomedical or health-related outcomes.

An observational clinical study is where participants identified as belonging to study groups are assessed for biomedical or health outcomes.

Searching Both is inclusive of interventional and observational studies.

Eligible Ages 18 Years and Over
Gender All
More Inclusion & Exclusion Criteria

Inclusion Criteria:

  • - Patients undergoing a tumor resection at the University of Texas M.
D. Anderson Cancer Center for a newly diagnosed as well as recurrent primary or metastatic brain tumor located in or adjacent to motor and/or speech brain areas - Signed informed consent

Exclusion Criteria:

- Patients with significant neurological motor deficits of the upper extremities, which would preclude them from performing the while awake intra-operative tasks - Patients who have impaired vision or hearing and whose performance could affect the study will be excluded at the discretion of the principal investigator (PI)

Trial Details

Trial ID:

This trial id was obtained from ClinicalTrials.gov, a service of the U.S. National Institutes of Health, providing information on publicly and privately supported clinical studies of human participants with locations in all 50 States and in 196 countries.


Phase 1: Studies that emphasize safety and how the drug is metabolized and excreted in humans.

Phase 2: Studies that gather preliminary data on effectiveness (whether the drug works in people who have a certain disease or condition) and additional safety data.

Phase 3: Studies that gather more information about safety and effectiveness by studying different populations and different dosages and by using the drug in combination with other drugs.

Phase 4: Studies occurring after FDA has approved a drug for marketing, efficacy, or optimal use.

Lead Sponsor

The sponsor is the organization or person who oversees the clinical study and is responsible for analyzing the study data.

M.D. Anderson Cancer Center
Principal Investigator

The person who is responsible for the scientific and technical direction of the entire clinical study.

Sujit S Prabhu
Principal Investigator Affiliation M.D. Anderson Cancer Center
Agency Class

Category of organization(s) involved as sponsor (and collaborator) supporting the trial.

Overall Status Recruiting
Countries United States

The disease, disorder, syndrome, illness, or injury that is being studied.

Metastatic Malignant Neoplasm in the Brain, Non-Metastatic Brain Neoplasm, Recurrent Brain Neoplasm
Study Website: View Trial Website
Additional Details


  • I. To record electrocorticogram (ECoG) data intraoperatively with surface electrode grids during various motor and speech tasks and identify functional brain areas through the spectral analysis, and compare the preliminary data with our current pre-surgical mapping methods: functional magnetic resonance imaging (fMRI) and transcranial magnetic stimulation (TMS), and the gold standard, intraoperative direct electrical stimulation (DES).
  • I. To perform a preliminary assessment of the utility of using ECoG data in these patients to quantify new neurological deficits in the short term (24 hours) and long-term (1 and 3 months), and achieve a safe maximal tumor resection.
OUTLINE: Patients undergo tumor resection. During surgery, patients also undergo electrocorticography over 18-20 minutes with either the CorTec high resolution hybrid grid, the PMT high-resolution grid, or the Ad-Tech grid followed by direct electrocortical stimulation. Following completion of study, patients are followed up within 24 hours from surgery and at 1 and 3 months.

Contact a Trial Team

If you are interested in learning more about this trial, find the trial site nearest to your location and contact the site coordinator via email or phone. We also strongly recommend that you consult with your healthcare provider about the trials that may interest you and refer to our terms of service below.

M D Anderson Cancer Center, Houston, Texas




M D Anderson Cancer Center

Houston, Texas, 77030

Site Contact

Sujit S. Prabhu



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