Here are some of the questions we get asked the most.

Why should I have my sleep recorded?
Disrupted sleep can disturb daytime activities and some medical problems during sleep pose a risk to your basic health. These parameters are recorded to obtain objective information about the quality of sleep to better define your sleep problem.

What will you measure?

The most basic test is called a polysomnogram, or PSG. During a PSG test we measure your body functions while you sleep. Digital information collected during a 6 hour period can add up to 140 mega bytes. Tests vary depending on the individual case, and some measurements taken may include:

- Brain waves (Elector-Encephalogram, EEG)
- Heart waves (Electro Cardiogram, EKG)
- Eye movements (Electro-Oculargram, EOG)
- Limb Movements (Electro-Myogram, EMG)
- Breathing (nasal/oral)
- Bands around the torso to measure chest, abdomen movements during breathing
- Sensors on the legs to measure leg movement
- Blood oxygen (Pulse Oximetry: SpO2)
- Video and sound recordings

Will I be able to sleep?

Contrary to what you might think, most people sleep well during sleep studies. For example, body sensors are applied in a manner that will allow you to turn and move during sleep. Generally, you will not be aware of the sensors after they have been on for a short time. Our staff makes the environment as comfortable as possible. If you need to get up and move anytime during the test, your technologist will disconnect you from the equipment.

This is merely a recording of your sleep not a performance test. So, relax and try to make the best of a night out!

What to expect the night of your study?

We will greet you at your appointment time in the clinic reception area. You will be asked to complete a short package of questionnaires after you have been shown to your private room. Your technologist will ask you to change and then will explain the hook up process and answer any additional questions you may have.

Your technologist will connect various electrodes to your body using a special conductive paste. This process takes approximately 30 minutes to an hour. After the quality of the signals from electrodes are verified, we turn off the lights, close the door and let you sleep normally.

Throughout the night your technologist monitors your sleep via audio/video link to your room. You will have an intercom system next to your bed to communicate with the technologist if needed. Your technologist also monitors all the signals from the electrodes connected to your body as they are recorded. Your technologist can help you get unhooked if you need to get up and go to the bathroom.

After your test is finished, you will be awakened around 6 a.m. You are done!

How to prepare?

We will be attaching electrodes to parts of you head, face and body to monitor your sleep. To establish best contact for the electrodes we need your skin and hair to be clean and dry.

- Please shower before coming to your appointment. Hair should be dry and free of styling products
- Please do not use any makeup or heavy facial creams
- Remove any nail polish or acrylic nails on your fingernails
- Avoid having any caffeinated or alcoholic beverages at least 2 hours prior to your appointment

It is very important to follow these instructions. This will allow us to gather the best data from your visit and minimize the chance of having to re-do the test due to electrode contact failure.

What to bring?

- A valid form of ID, Insurance Card(s), and some form of payment in case you may have a co-pay
- Nightclothes are a must. Please bring a two-piece set, such as shorts and a t-shirt, or pajamas, or a tracksuit (MUST HAVE A TOP AND A BOTTOM).
- Personal toiletries (toothbrush, comb etc.)
- ANY NEEDED MEDICATION!. Do not discontinue any medications prior to study without consulting your physician.
- Any items that will make you feel more at home, such as a special pillow or blanket.
- If you are using PAP user, please bring your mask with you.
- Something to read or to work on if you don’t sleep right away. Rooms are equipped with DVD players and TVs. You may bring your own DVD to watch if you wish.
- If you are scheduled for a Multiple Sleep Latency Test (MSLT) or a Maintenance of Wakefulness Test (MWT) which requires you to stay the next day, please remember to bring your breakfast, lunch, and snacks for throughout the day. A microwave and a refrigerator are available for your use. Please note that you are restricted from having any caffeinated beverages during the duration of this appointment. Please bring items to keep you occupied (e.g. books, magazines, DVDs) as you will have plenty of downtime.

What are the next steps after my sleep study?

A record of your sleep study will be permanently stored at Bay Sleep Clinic. It will be analyzed in detail by a technologist and interpreted by a physician. The information will then be forwarded to your referring physician. You will be notified as soon as your results have been finalized. Your physician will go over the results of your study with you and discuss a possible treatment plan.


- Please do not bring valuables to the overnight testing.
- Bay Sleep Clinic is not responsible for lost or stolen items.
- If you have difficulty staying alert while driving, please make arrangements for transportation to and from the clinic.

Cancellation Policy

Please confirm you appointment 48 hours in advance. This includes daytime appointments. All cancellations must be made 24 hours in advance or a $150.00 penalty will apply.


Please visit our website for directions to the clinic you are scheduled for. Please print and bring a copy of the directions with you as it may be difficult to contact us on the phone while you are on your way to the clinic.
Sleep Questionnaire
Do you snore or wake up tired?
Do you have high blood pressure?
Do you have a weight problem?
Are you depressed?
Are you forgetful?