What to expect in EEG, fMRI, MEG studies

You will receive instructions and confirmation reminder for the study before the scheduled day. If you do not receive the confirmation, please write to us at ude.nmu|balgnahz#ude.nmu|balgnahz. During the study, you will be asked to remain still during recordings and avoid excessive blinking or bodily movements. Gum chewing is not allowed during experiment as it distorts the recorded data.

EEG (Electroencephalography) Study

Infant EEG

The EEG studies are conducted in Shevlin Hall, 164 Pillsbury Dr SE, Minneapolis, MN 55455. We will measure your head circumference and place a good-sized electrode cap on you. We will fill the electrodes with water soluble conductive gel. The cap fitting procedure takes approximately 15~20 minutes. Experiments typically consist of multiple short sessions, each of which contain certain tasks and can be completed in 3~20 minutes. For auditory experiment, your hearing will be tested first to ensure appropriate sound presentation. Multiple breaks are allowed during the experiment, and we will also offer you water if needed. After the experiment, you will use a sink to wash your hair. We have shampoo, towel, comb, and hair-dryer in the washing room.

EEG is very sensitive to metal and electrical objects. You will be asked to leave any metallic objects you may be carrying (including coins, keys, jewelry, mobile phones, credit cards, belt with metal, etc. ) in the provided locker. Hair styling products may also cause problems for EEG data recording. Please avoid using them on your scheduled day for the EEG study.

fMRI (functional Magnetic Resonance) Study

Siemens MRI Scanner

The fMRI studies are conducted at Center for Magnetic Resonance Research at 2021 6th St SE, Minneapolis, 55455 (one-story brick building across from the TCF Bank Stadium). You will be asked to leave any metallic objects you may be carrying (including coins, keys, jewelry, mobile phones, credit cards, belt with metal, etc. ) in the lockers provided. Please wear loose, comfortable clothing with minimal metal fastenings. Female participants are advised to wear bras with no metallic elements. Glasses cannot be worn inside the MRI scanner; however, prescription (non-tinted) contact lenses are OK.

The researcher must be informed about the following conditions to determine whether you are qualified for the study:
History of head trauma, Surgical aneurysm clips, Cardiac pacemaker, Prosthetic heart valve, Neurostimulator, Implanted pumps, Previous Surgery with Metal rods, plates, or screws left in body, Cochlear implants, Meniere's Disease, Hearing aid, Dentures, Injury to the eyes (involving metal), Pregnant, Breast feeding, IUD, Tattoos containing metal, Claustrophobia, Physical discomfort (body size, back or neck pain, etc.), Movement disorders (i.e., ticks, restless legs, etc., that may cause movement artifact), Vision / Hearing problems, Problems using response devices.

As required by the MRI protocol, here is a list of items not to bring or wear in the scanner:
Keys, wallet, and cell phones, other items in your pockets; Metal jewelry; Watches; Hair holders; Eye glasses; Metal on clothing (i.e. metal buttons, snaps or trimming, underwire bras, belt buckles); Eye shadow (many contain metallic specks); Colored contact lenses (bring a case to store contacts in during scanning).

Here is the current version of the MRI screen form. (Your brower will go to a new page.)

Please arrive on time as other researchers using the scanner are counting on us to finish on time.

For location information of the MRI facility, please click here.

Below are sample MRIs on sagital, coronal, and transverse planes from one subject. After data analysis, participants who successfully completed the fMRI study will get digital MRI pictures of their own brains upon request.

MEG (Magnetoencephalography) Study

MEG studies are conducted locally at United Hospital in downtown St. Paul and internationally at Research Center for Advanced Technologies, Tokyo Denki Unversity, Japan. MEG is extremely sensitive to metal and electrical objects.

The following conditions would not be suitable for MEG:
Cardiac pacemaker, Surgical aneurysm clips, Vagal nerve stimulator and/or other neurostimulator, Implanted pumps, Prosthetic heart valve, Cochlear implant, Other implanted medical device, Steel pins from root canals, Metal fragments in body or eyes (from previous surgery or injury), Metal rods, plates, or screws in body or mouth, Braces or permanent retainers, Tattoos containing metal.

The following items need to be removed for MEG scanning:
Hearing aid, Retainers, dentures, bridges (non-permanent), Piercings.

Items that are not allowed in the Magnetically Shielded Room are listed as follows:
Any electronic devices and devices with metal (examples: cell phones, watch, keys), Eye glasses with metal frames or pins, Hair accessories (metal or non-metal), Styling products in hair (gel, hairspray, etc.), Metal jewelry, Clothes (including bra) containing metallic elements (examples: zippers, snaps, metallic buttons), Wallet with cards that have magnetic strips, Makeup containing metal flakes.

The MEG researcher must be informed about the following conditions to determine whether you are qualified for the study:
Previous surgery, Previous head trauma, Claustrophobia, Root canal(s) and metal fillings in teeth.

The local MEG facility is located at United Hospital in downtown St. Paul. We will provide detailed instructions to you for participating in an MEG study.

Click here for more information about the MEG facility.

Sample MRIs from one subject
4D MEG at United Hospital (St. Paul)
Unless otherwise stated, the content of this page is licensed under Creative Commons Attribution-ShareAlike 3.0 License