A team of researchers is conducting a study on the impact of extended space missions (e.g., to Mars) on astronauts’ sleep-wake cycles. Astronauts on these missions experience altered light-dark cycles and confinement, which can significantly affect their circadian and ultradian rhythms.
a. Analyse how the altered light-dark cycles in space might disrupt the astronauts’ circadian rhythms, with specific reference to the role of the suprachiasmatic nucleus (SCN).
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Create Free Account Log inThis is a free VCE Units 3 & 4 Psychology practice question worth 3 marks, testing your understanding of Regulation by biology. It falls under How does sleep affect mental processes and behaviour? in Unit 4: How is mental wellbeing supported and maintained?. Submit your answer above to receive instant AI-powered marking and personalised feedback.
In this unit students explore the demand for sleep and the influences of sleep on mental wellbeing. They consider how changes to a person’s sleep-wake cycle can affect psychological functioning. Students explore the concept of mental wellbeing, including social and emotional wellbeing as a multidimensional and holistic framework. They apply a biopsychosocial approach to specific phobia, exploring how biological, psychological and social factors are involved in its development and management. A student-designed scientific investigation involving the generation of primary data related to mental processes and mental wellbeing is undertaken in either Unit 3 or Unit 4 or across both Units 3 and 4, and is assessed in Outcome 3 of this unit.
In this area of study students focus on sleep as a naturally occurring altered state of consciousness and the demands for sleep across the life span. They examine REM and NREM sleep, biological mechanisms of the sleep-wake cycle, and how partial or total sleep deprivation can affect psychological functioning. Students compare the effects of full sleep deprivation with blood alcohol concentration and explore circadian rhythm disorders. They consider ways to improve sleep hygiene and mental wellbeing.
regulation of sleep-wake patterns by internal biological mechanisms, with reference to circadian rhythm, ultradian rhythms of REM and NREM Stages 1–3, the suprachiasmatic nucleus and melatonin
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Explain how the interplay between the suprachiasmatic nucleus (SCN) and melatonin regulates the sleep-wake cycle, and predict what might hap…
State the role of the suprachiasmatic nucleus (SCN) in regulating the sleep-wake cycle.
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