What Is the Purpose of Sleep Testing? Sleep studies, or polysomnograms, are tests to diagnose sleep disorders like sleep apnea, periodic limb movements of sleep, parasomnias (sleep behaviors), and narcolepsy. They generally involve spending the night sleeping at a sleep laboratory or sleep center.
Origin and Meaning of Laura.  1 Laura is a name of Latin origin, and it means Laurel. 2  LP is a rock music, pop music, indie rock, indie pop, and alternative rock musician. 3  Reese Witherspoon is an actress and producer. 4  Laura Prepon is an actress, producer, and model. 5  Laura Dern is an actress, director, and producer.
Laura (1944 film) Laura is a 1944 American film noir produced and directed by Otto Preminger. It stars Gene Tierney, Dana Andrews and Clifton Webb along with Vincent Price and Judith Anderson. The screenplay by Jay Dratler, Samuel Hoffenstein and Betty Reinhardt is based on the 1943 novel Laura by Vera Caspary.