Dr Chris Idzikowski, director of the Edinburgh Sleep Centre and a consultant for British Airways, says dosage is important.

The possible explanations are, first, a disturbance of the sleep centre in the brain, resulting in narcolepsy, that may also be associated with dream-like hallucinations and the inability to move on waking.

Guardian.co.uk quotes the director of the Imperial College Healthcare Sleep Centre: "One problem is that there has been relatively little training in sleep medicine in this country - certainly there is no structured training for sleep physicians."

Not everyone who goes to the sleep center, however, actually has a problem.

And the space was available, since he is also an owner of the sleep center.

They're usually provided by a local sleep center or sent directly to your home.

In some cases, you may be referred to a sleep center for special tests.

You will be assigned to a private bedroom in a sleep center or hospital.

Three times the hospital has run a sleep center.

But what if the nearest sleep center is hours away or booked up for months?

When you call a sleep center ask if it offers assistance for uninsured patients.

A sleep study usually takes place at a sleep center, where you will spend the night.

The researchers studied 50 men and women admitted to the Tampa sleep center.

Hospitals are also opening up sleep centers to treat the state's weary.

If the problem persists, you can get a reference to an accredited sleep center.

Smith wished he had had the chance to beg for his sleep center to be turned on.

It operates on the sleep centers of the brain.

But the visits are expensive, the waiting lists are long, and many people do not live near a sleep center.

The sleep center of the brain is depressed.

They seem to affect the brain's sleep center through the optic nerve."

You will need to go to a sleep center for an overnight study if you do not meet the criteria listed above.

You can look for sleep centers in your area on the academy's patient website, SleepEducation.com.

Sleep centers are primarily concerned with treating disorders and don't address the impact one partner has on the other.

Finally she had a full sleep study at a sleep center and was diagnosed with narcolepsy.

Sleep apnea, he said, can be easily diagnosed in one night at the sleep center.

Q: Is a sleep study at a sleep center better than a home sleep test?

If you can't visit a sleep center, home testing may confirm sleep apnea.

You can also look for a certified sleep specialist or an accredited sleep center.