CSB345H1 Lecture Notes - Lecture 1: Brainstem, Brown Fur Seal, Lisa Lopes
14 Apr 2016
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Ultradian: minutes to hours (shorter than a day) Temporal niche: nocturnal (acive at night) vs. diurnal (acive during dayime) vs. crepuscular (divide ime up into niches weather, presence vs. absence of prey) = twilight, dusk & dawn (acive in dusk and dawn inacive during night) Sleep is more than just rest : behavioural characterisics: stereotypical posture, rapidly reversible, elevated arousal threshold, exhibit circadian rhythms, homeostaically regulated. * behavioural sleep has been observed in arthropods and all classes of vertebrates. Dayime -> big response to every simulus. Night -> no response unless acivated irst by a puf of air. > antennal immobility levels ater deprivaion (high) vs. controls (lower) -> diference b/w the two = calculate for rebounds. > amount of sleep rebound does not always correspond to sleep loss. Sleep is more than just rest : physiological characterisics. Pronounced changes in: brain acivity, muscle acivity, cardiorespiratory system, temperature regulaion, hormones. Eeg (brain wave acivity), emg (muscle acivity), eog (eye moion)
