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| What to Expect | |
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Functional Magnetic Resonance Imaging (fMRI) is a technique that locates where certain functions occur in the brain. As with traditional MRI, the subject lies still on a table and enters into the scanner's imaging space so brain images can be recorded for study. In addition, fMRI requires the patient to perform a "thinking" or "physical" task while the imaging is taking place. The fMRI scan monitors changes in blood flow in the area of the brain responsible for this task. The nature of the task(s) you will be asked to perform depends upon the area of the brain the investigator is interested in. Common tasks are looking at changing pictures of faces, objects, patterns, or words. Sometimes responses are needed by use of a finger touchpad or joystick. The task and any responses will be explained by the investigator before the task is performed. The fMRI procedure typically takes 60 to 90 minutes. During this period you must remain still on a comfortable padded table that goes inside of a large tube that is the imaging magnet. Because the noises produced by the scanner are loud and may be a source of discomfort, all volunteers must wear ear plugs during the MRI scan; disposable ear plugs will be provided for you. Because of the powerful magnetic field, you must not bring any metal into the instrument. For your comfort, we suggest the following:
You will need to sign two or more consent forms before you are allowed to participate. One will be presented by the investigator performing the study, and will outline the expectations of the study. The other is a pre-screening form that the MR Technician will ask you to fill out; see below for more information.
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