Mapping of Human Cognition

NCT05989893 | Recruiting

• 2 other identifiers: HSC-MS-06-0385U01NS128921
• Study Type: interventional
• Target: 75
• Locations: 1 country
• Sites: 1

Brief Summary

The purpose of this study is to compare organization of normal brain function as detected using Functional magnetic resonance imaging (fMRI) in normal subjects as opposed to patients with epilepsy or brain tumors, to ascribe precise anatomic labels (including Brodmann Areas) and functional significance to each region involved in cognitive processes as detected by cortical stimulation mapping (CSM) in patients with implanted subdural electrodes (SDE) or depth (sEEG) electrodes, to describe the locations of these regions in Talairach space, for a population of patients without overt structural abnormalities in these regions, to generate a spatial probability map of locations of cortical regions "essential" for these processes, to compare the loci of "crucial" language, visual, motor and cognitive sites as determined by CSM with the loci determined by a battery of tasks using fMRI for each individual and to use these data in patients undergoing intracranial electro-corticographyto determine the loci of essential, involved and uninvolved brain areas, and use sophisticated mathematical analyses of these intracranial recordings to study information flow between these areas.

Conditions

Epilepsy; Brain Tumor

Keywords

seizure

Outcome Measures

Primary Outcomes (2)

• Change in reading errors as assessed by the number of words read incorrectly

  Baseline, during stimulation( about 2 seconds after baseline )

• Change in reaction times in milliseconds

  reaction time is the time it takes to say the word after seeing it

  Baseline, during stimulation( about 2 seconds after baseline )

Study Arms (1)

Neural recordings and stimulation during language tasks

EXPERIMENTAL

Behavioral: Language-based tasks

Interventions

Language-based tasks BEHAVIORAL

In either the MRI suite, or the Epilepsy Monitoring Unit, or the operating room, epilepsy and tumor subjects are asked to perform a variety of language-based tasks as neural recordings are made from and/or neural stimulations are delivered to various language areas of the brain.

Neural recordings and stimulation during language tasks

Eligibility Criteria

• Age: 18 Years - 75 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• patients with medically refractory epilepsy who are scheduled to undergo or have previously undergone placement of sub-dural electrodes (including depth electrodes) to localize the site of seizure onset and to map the locations of critical language and motor regions
• patients with epilepsy, brain tumors or cortically based vascular malformations (cavernous malformations or arterio-venous malformations) with lesions that are/were proximate to crucial brain regions, and who are scheduled to undergo or have previously undergone intra-op mapping of motor, visual or language function, or a Wada test, or maybe part of an awake craniotomy.
• proficiency in English

You may not qualify if:

• Gross structural abnormalities (large hamartomata, tumors, large vascular malformations, very large diffuse malformations of cortical development) that may have impacted upon the location of critical brain areas.
• Unable to participate in testing due to impaired cognition or mental retardation.
• Cardiac pacemakers, intracranial aneurysm clips, or other potentially mobile implanted metallic devices
• Patients with claustrophobia who cannot undergo an MRI scan without sedation

Sponsors & Collaborators

• The University of Texas Health Science Center, Houston: lead
• National Institute of Neurological Disorders and Stroke (NINDS): collaborator

Study Sites (1)

The University of Texas Health Science Center at Houston

Houston, Texas, 77479, United States

RECRUITING

MeSH Terms

Conditions

Epilepsy; Brain Neoplasms; Seizures

Condition Hierarchy (Ancestors)

Brain Diseases; Central Nervous System Diseases; Nervous System Diseases; Central Nervous System Neoplasms; Nervous System Neoplasms; Neoplasms by Site; Neoplasms; Neurologic Manifestations; Signs and Symptoms; Pathological Conditions, Signs and Symptoms

Study Officials

• Nitin Tandon, MD

  The University of Texas Health Science Center, Houston

  PRINCIPAL INVESTIGATOR

Central Study Contacts

Nitin Tandon, MD

CONTACT

713-500-5456; Nitin.Tandon@uth.tmc.edu

Eliana M Klier

CONTACT

713-500-5442; Eliana.Klier@uth.tmc.edu

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: NA
• Masking: NONE
• Purpose: BASIC SCIENCE
• Intervention Model: SINGLE GROUP
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Professor

Study Record Dates

• First Submitted: July 27, 2023
• First Posted: August 14, 2023
• Study Start: August 1, 2022
• Primary Completion (Estimated): July 31, 2027
• Study Completion (Estimated): July 31, 2027
• Last Updated: August 28, 2025

Record last verified: 2025-08

Data Sharing

• IPD Sharing: Will not share

Locations

US (1)