STOCKSCH 397B Lecture Notes - Rapid Eye Movement Sleep, Circadian Rhythm, List Of Domesticated Animals
21 Apr 2014
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Hours 28-40: ultradian, more frequent than 24 hours, growth hormone levels in cows in cycles of 3. 5 hours. Horses and dogs higher activity before storms: drugs, caffeine higher activity. Certain drugs are more effective and/or less toxic at one time of day: pineal gland, responds to light and dark patterns. Ii. a especially important in seasonal breeders: feeding. Annual or seasonal a horses and sheep breeding seasons. Cats annual cycles: corticosteroids, thyroxin, and epinephrine peak in winter, sleep, occupies time in ruminants. Replenish neurotransmitters, conserve energy, consolidate memory, fill up time: types of sleep, slow wave sleep (sleep of the mind, quiet sleep) Rem sleep (rapid eye movement sleep) a mild body movement as inhibitory area in medulla that paralyzes muscles of body: humans awake from rem sleep report they have been dreaming, dogs twitching/whining while sleeping may indicate dreaming. Deprivation of rem sleep results in behavioral abnormalities. Newly introduced to new flock may wander for 9 miles.
