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We are always
looking for participants for our TMS research studies. Studies require
two 1 hour sessions, one fMRI and one TMS session. In addition to being
paid for their time, participants receive an image of their brain.
Transcranial
magnetic stimulation (TMS) is a brain stimulation technique that
involves generating a brief magnetic field in a coil that is placed on
your scalp. The magnetic field passes through the skull and induces a
weak electrical current in the brain that briefly disrupts neural
circuits at the stimulation site.
Functional
Magnetic Resonance Imaging (fMRI) allows researchers to obtain images
of brain activity over time, as participants complete various tasks.
For the TMS study, we use the results from the fMRI to guide the
placement of the TMS coil.
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TMS setup
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What to expect
During the fMRI
portion of the study study, an MRI machine, like the one in the photo
below, will take images of your brain as you complete tasks such as
reading or remembering letters and responding to questions by a keypad.
fMRI is a very safe, noninvasive imaging technology. Unlike
x-rays, fMRI does not use ionizing radiation. Instead, fMRI images are
generated from a strong magnetic field and low-power radio-waves, which
expose MRI subjects to much less energy than x-ray subjects.
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During the TMS
session, you will be asked to sit in front of a computer monitor and
perform a task for about 20 minutes (with breaks). Periodically while
performing the task you will receive a brief magnetic stimulation
pulse, and we will record changes in your performance on the task. The
magnetic stimulation may cause you to feel a tapping sensation on your
head and may cause minor twitching of muscles beneath the coil. If the
sensations are too unpleasant for you, you can discontinue the
experiment at any time. You will hear a click sound when the magnetic
pulse is applied, and you will wear earplugs to reduce the noise.
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Philips Scanner |
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Sign-up!
If you are interested in
participating in a NIMLAB brain imaging / TMS study, please complete
the Participant
Recruitment Form (offsite link). The form will open in a
new window.
If you want to learn more about functional MRI, click
this link.
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