Clinical trial NCT00001672: Language Localization Using Repetitive Transcranial Magnetic Stimulation (rTMS) in Patients With Epilepsy
Official title: Language Localization Using Repetitive Transcranial Magnetic Stimulation (rTMS) in Patients With Epilepsy
Study type: OBSERVATIONAL
Overall status: COMPLETED
Conditions: Epilepsy, Temporal Lobe
Keywords: Brain Mapping
Cognition
Noninvasive
Temporal Lobe
Visual Naming
Lead sponsor: National Institutes of Health Clinical Center (CC)
Sponsor class: NIH
First posted: 2002-12-10
Enrollment: 40
Sex: ALL
Standard ages: CHILD
ADULT
OLDER_ADULT
Accepts healthy volunteers: no

Brief summary: Repetitive transcranial magnetic stimulation (rTMS) may be able to provide a moderately detailed localization of language functions in the brain. We propose to test the ability of rTMS to locate the substrate of visual naming to a limited area of the temporal lobe in patients with temporal lobe epilepsy before and after surgical resections. The study is expected to yield information on the organization of language in the temporal lobes and how unilateral temporal lobe lesions and lobectomy cause relocation of language mechanisms in the lesioned and in the other hemisphere. It will also be a preliminary step in the development of a clinically useful procedure for locating critical language areas in potential surgical candidates.

Detailed description: Repetitive transcranial magnetic stimulation (rTMS) may be able to provide a moderately detailed localization of language functions in the brain. We propose to test the ability of rTMS to locate the substrate of visual naming to a limited area of the temporal lobe in patients with temporal lobe epilepsy before and after surgical resections. The study is expected to yield information on the organization of language in the temporal lobes and how unilateral temporal lobe lesions and lobectomy cause relocation of language mechanisms in the lesioned and in the other hemisphere. It will also be a preliminary step in the development of a clinically useful procedure for locating critical language areas in potential surgical candidates.

Eligibility criteria: Patients will be drawn from among those referred to the NINDS Epilepsy Research Branch.

No patients with evidence for a progressive neurological disorder.

No subjects with metal hardware in the cranial cavity, cardiac pacemakers, indwelling medication pumps, cochlear implants, intracardiac lines, significant intracranial masses or evidence of increased intracranial pressure.

Women must not be pregnant.

Primary outcomes:
Secondary outcomes:
Other outcomes:
Locations:
city: Bethesda
country: United States
facility: National Institute of Neurological Disorders and Stroke (NINDS)
state: Maryland
Study officials:
References:
citation: Claus D, Weis M, Treig T, Lang C, Eichhorn KF, Sembach O. Influence of repetitive magnetic stimuli on verbal comprehension. J Neurol. 1993;240(3):149-50. doi: 10.1007/BF00857519.
citation: Desmond JE, Sum JM, Wagner AD, Demb JB, Shear PK, Glover GH, Gabrieli JD, Morrell MJ. Functional MRI measurement of language lateralization in Wada-tested patients. Brain. 1995 Dec;118 ( Pt 6):1411-9. doi: 10.1093/brain/118.6.1411.
citation: Epstein CM, Lah JJ, Meador K, Weissman JD, Gaitan LE, Dihenia B. Optimum stimulus parameters for lateralized suppression of speech with magnetic brain stimulation. Neurology. 1996 Dec;47(6):1590-3. doi: 10.1212/wnl.47.6.1590.