During the EEG test, small electrodes are placed on the scalp to record the electrical activity of the brain. The test is typically painless and non-invasive, and takes about 60-90 minutes to complete. Patients may be asked to perform certain tasks or activities during the test, such as deep breathing or flashing lights, to help stimulate brain activity.After the test is complete, the results will be analyzed by a neurologist or other healthcare provider. Depending on the results, further testing or treatment may be recommended.