Protocol Number: 04-N-0113
Healthy normal volunteers between 21 and 40 years of age may be eligible for this study. Candidates must be native English speakers and must be right-handed. They must have no history of nervous system disease or psychiatric disorder. Candidates are screened with questionnaires and a neurological examination. Participants undergo functional MRI scanning. For this procedure, the subject lies on a stretcher that moves into the scanner - a metal cylinder surrounded by a strong magnetic field. During the scan, he or she is asked to make various decisions about whether words are related or not. Two words are presented visually, separated by a variable time delay. The subject reads both words, decides as quickly and accurately as possible whether the two words are related or not, and indicates the answer by pressing a button. The test takes about 2 hours. When it is completed, the subject completes a written questionnaire concerning his or her experience in the scanner.
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National Institutes of Health Clinical Center
Bethesda, Maryland 20892. Last update: 01/30/2009
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