PSYB64H3 Chapter Notes -Sleep Onset Latency, Chiropractic, Aromatherapy
20 Dec 2011
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Document Summary
The body clock brings about daily rhythms in core temperature, plasma hormone concentrations and the sleep wake cycle = thus the whole body becomes rhythmic. The importance of the body clock in the production of rhythms in sleep + performance is unresolved. A recorded rhythm is a mixture of endogenous components (body clock) and the exogenous component (environment, lifestyle), which are normally synchronized. Studies show that elite athletes have sleep loss and mood disturbance after long haul flights. If they travel west or east over 6-8 time zones showed altered grip strength and poor performance in training sessions for several days after the flight. Lt difficulties for aircrew: irregular menstrual cycle, altered patterns of melatonin secretion, deficits of cognitive performance and increases in psychotic + major affective disorders. The best way to reduce it is by adjusting the body clock. The main zeitgebers are the light-dark cycle and the nocturnal secretion of melatonin.
