Dr. Marcel Hungs, neurologist and director of the Center for Sleep Medicine at UC Irvine Medical Center, will discuss sleep disorders and what causes them during three upcoming television segments. Some of the most common sleep disorders Hungs treats include sleep apnea, snoring, insomnia, narcolepsy, restless leg syndrome, nocturnal seizures and parasomnias. He will discuss how sleep disorders are diagnosed at UC Irvine’s four-bed sleep laboratory and what treatments can help patients sleep through the night. Air dates and times are 7:30 p.m. Wednesday, Nov. 28, and 1:30 p.m. Friday, Nov. 30, on KOCE Channel 50 in Orange County, and 6 p.m. Wednesday, Dec. 5, on KVCR, Channel 24 in San Bernardino, Riverside and Los Angeles Counties.