EEG, or electroencephalogram, is a tool we use to image the brain while it is performing a cognitive task. This allows us to detect the location and magnitude of brain activity involved in the various types of cognitive functions we study. EEG allows us to view and record the changes in your brain activity during the time you are performing the task. Images are acquired by using electrodes to monitor the amount of electrical activity at different points on your scalp.
EEGs are non-invasive and do not involve any X-rays, radiation, or injections. EEGs have been used for many years and are considered very safe. The electrodes record activity without producing any sensation. Slight redness may occur in the locations where the electrodes were placed, but this will wear off after a few hours. However, there may be risks depending on your specific medical condition, so we will screen for disorders such as epilepsy.