EEG Volunteers

Where to go

The Imaging Research Facility EEG Lab is located on the third floor in room 399 of the Psychological and Brain Sciences Building on 10th St. A map of the area is located on the Contact Us page.


What to expect

Electroencephalography (EEG) is a non-invasive technique used to record electrical activity in the brain. EEG is accomplished by placing a net of electrodes that are enclosed in tiny sponges over the head of the subject. After application of the EEG net, the subject will generally perform one or more tasks while seated in front of a computer monitor. During this time the EEG system records the changes in their brainwave activity, allowing researchers to study the electrical responses of the brain to various tasks and stimuli. The technique is suitable for participants of all ages, including babies.


How to prepare

Please do not wear any hair products  (conditioner, hair gel, etc . . .) the day of your scheduled EEG session, as this will impair the quality of the EEG signal.

Please refrain from wearing facial makeup, such as foundation, as this may also affect the recording. If you choose to wear makeup, you may be asked to remove it before participating.

Glasses and contacts may be worn as normal, but glasses may have to be briefly removed in order to properly seat the net on the head. After the EEG net is in place, participants may resume wearing their glasses.



EEG is painless and easy to apply, with preparation usually lasting about fifteen minutes. After arriving and being briefed on the current study, participants will be fitted with an EEG net. The net resembles a shower cap in shape and size; EEG nets are made of an elastic material that supports a series of sponges, and inside each sponge rests an electrode. The electrode sponges are soaked in a warm saltwater solution in order to allow electrical contact with the scalp. Participants may expect the study to last between one and three hours, depending on the specifics of the session.

Common tasks include looking at a rapidly changing series of faces, objects, patterns, or words. Some studies will require the participant to respond using a key press, mouse click, or vocal response.

Upon arriving at the EEG lab, you will be given consent forms to complete before beginning the experiment. These forms will explain the details of the study and a technician will be on hand to answer any questions that may arise. You will receive a copy of the consent form to retain for your own records.



There are no known risks associated with EEG; if you should experience discomfort or distress of any kind during a study, please let the technicians know immediately.