An EEG is a safe, non-invasive test used to help your doctor understand how your brain is functioning. Many people feel nervous or unsure before their study — this page is designed to help you feel informed and comfortable.
An EEG may be ordered to help evaluate symptoms such as changes in awareness, episodes of confusion, memory concerns, or other neurological symptoms. The test records brain wave activity and provides information your neurologist uses as part of your overall care.
What to Expect During an EEG:
• The test is painless and does not involve electricity going into your body
• No needles are used, and nothing is injected into your body
• Small sensors are placed on your scalp to record brain activity
• You will be asked to relax and follow simple instructions
• Most studies last between 30 minutes and several hours, depending on the type ordered
How to Prepare for Your EEG:
• Wash your hair the night before or the morning of your test
• Do not use hair products such as gel, spray, oils, or conditioners
• Eat your normal meals unless your doctor gives other instructions
• Take your medications as prescribed unless told otherwise by your doctor
• Wear comfortable clothing
• If your study includes sleep monitoring, your doctor may give specific sleep instructions
• Do not use hair products such as gel, spray, oils, or conditioners
• Eat your normal meals unless your doctor gives other instructions
• Take your medications as prescribed unless told otherwise by your doctor
• Wear comfortable clothing
• If your study includes sleep monitoring, your doctor may give specific sleep instructions
In-Home EEG:
Some EEG studies can be performed in your home. This option is helpful for patients who have difficulty traveling or who require monitoring in a familiar environment.
In-Clinic EEG:
Other EEG studies are completed in a clinic setting. Your neurologist will determine which option is most appropriate for your specific needs.
Ambulatory EEG:
An ambulatory EEG is an extended study that allows your brain activity to be recorded continuously while you go about your normal daily routine.
This type of EEG provides your neurologist with a more complete picture of brain function over time, increasing the likelihood of capturing events that may not occur during a short in-clinic study.
• Studies typically last 24, 48, or 72 hours, depending on your doctor’s request
• Small sensors are applied to the scalp and remain in place throughout the study
• You will wear a lightweight, portable recording device
• In some cases, synchronized video monitoring may be included
• You will receive simple instructions to help ensure high-quality recordings
• Small sensors are applied to the scalp and remain in place throughout the study
• You will wear a lightweight, portable recording device
• In some cases, synchronized video monitoring may be included
• You will receive simple instructions to help ensure high-quality recordings
Once the study is complete, the equipment is removed and the data is carefully reviewed and interpreted by your neurologist. Your doctor will then discuss the results with you and explain how they relate to your care.
If you have questions before or after your study, your healthcare team is available to help. You may also contact EEGsciences for guidance throughout the process.