• That a paramedic who tried to revive him the day he died initially assumed he was a hospice patient.
• That show producers reported Jackson became progressively thinner and paranoid and was talking to himself in his final weeks.
• That the production manager warned that Jackson had deteriorated over eight weeks, was "a basket case" who he feared might hurt himself on stage and could not do the multiple 360-degree spins that he was known for.
• That show director Kenny Ortega wrote that Jackson was having trouble "grasping the work" at rehearsals and needed psychiatric help.
• That Jackson needed a teleprompter to remember the words to songs he had sung many times before over several decades.
• That show workers reported the singer was talking to himself and repeatedly saying that "God is talking to me."
• That Jackson was suffering severe chills on a summer day in Los Angeles and his skin was cold as ice to the touch.
Jackson lawyers revised the question Friday morning after AEG Live lawyers objected to the information about Murray's nightly propofol treatments, since it was derived only from the doctor's statement to police after Jackson's death. The judge previously ruled that statement inadmissible.
Instead, they brought up evidence that Murray ordered more than four gallons of propofol between April and June, which Czeisler said equaled 155,000 milliliters of the drug. An anesthesiologist uses between 20 and 30 milliliters to induce a coma for surgery, he said.
The expert testified that his review of Jackson's medical records convinced him that the singer suffered a chronic sleep disorder that "was greatly exaggerated" while he was on tour or preparing for a tour.
Jackson died just two weeks before he would have traveled to London for the premiere of his "This Is It" comeback concerts, produced and promoted by AEG Live.
A lecture on sleep
Jurors appeared quite interested as Czeisler lectured them Thursday on his sleep research, including an explanation of circadian rhythm: the internal clock in the brain that controls the timing of when we sleep and wake and the timing of the release of hormones
"That's why we sleep at night and are awake in the day," he said.
Your brain needs sleep to repair and maintain its neurons every night, he said.
Blood cells cycle out every few weeks, but brain cells are for a lifetime, he said.
"Like a computer, the brain has to go offline to maintain cells that we keep for life, since we don't make more," he said. "Sleep is the repair and maintenance of the brain cells."
An adult should get seven to eight hours of sleep each night to allow for enough sleep cycles, he said.
You "prune out" unimportant neuron connections and consolidate important ones during your "slow-eyed sleep" each night, he said. Those connections -- which is the information you have acquired during the day -- are consolidated by the REM sleep cycle. Your eyes actually dart back and forth rapidly during REM sleep.
"In REM, we are integrating the memories that we have stored during slow-eyed sleep, integrating memories with previous life experiences," he said. "We are able to make sense of things that we may not have understood while awake."