VCE PSYCHOLOGY U NIT 4 PowerPoint Presentation, PPT - DocSlides

VCE  PSYCHOLOGY U NIT  4 PowerPoint Presentation, PPT - DocSlides

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Study design dot points:. changes to a person’s sleep-wake cycle and susceptibility to experiencing a circadian phase disorder, including sleep-wake shifts in adolescence, shift work and jet lag. the interventions to treat sleep disorders including cognitive behavioural therapy (with reference to.... ID: 630916

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VCE PSYCHOLOGY UNIT 4

Study design dot points:changes to a person’s sleep-wake cycle and susceptibility to experiencing a circadian phase disorder, including sleep-wake shifts in adolescence, shift work and jet lagthe interventions to treat sleep disorders including cognitive behavioural therapy (with reference to insomnia) and bright light therapy (with reference to circadian phase disorders).

Sleep-wake cycle

Presented by Kristy Kendall

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Image used under license from Shutterstock

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Sleep-wake cycle

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Owl or lark?Sleep quiz activity http://www.surrey.ac.uk

/features/sleep-quiz-are-you-owl-or-larkSource: Pixabay

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Sleep-wake cycleOur bodies are tuned into a 24 hour sleep-wake cycle which is a regular circadian

rhythm.It is determined by an internal body clock located in the hypothalamus. This clock also regulates our level of arousal, metabolism, body temperature and hormone secretions.

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Circadian phase disordersSource: Pixabay

Sleep disruption due to alteration of the internal circadian rhythm. Can be characterised by an inability to fall asleep or to remain asleepCaused by a variety of reasons including:lifestyle factorsgeneticsshift work

jetlag

adolescence, etc..

Can result in:

insomnia

impairment in social and occupational functioning.

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LifestyleSource: http://www.freepik.com/free-vector/neon-signs-collection_739265.htm

ShiftworkStressful or low stress job Active or inactive lifestyleDiet and health (stimulants)

Good sleepers are more likely to have a more regular sleep routine than poor sleepers.

Factors that effect the sleep-wake cycle

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GeneticsSource: http://www.freepik.com/free-photo/sisters-using-an-open-book-as-an-umbrella_867236.htm#term=twins identical&page=1&position=0

Studies found identical twins have more similar sleep patterns then fraternal twins.Studies also suggest females tend to need more sleep than males.

Factors that effect the sleep-wake cycle

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JetlagChange of time zones West is best

…gaining and losing timeSource: Shutterstock

Factors that effect the sleep-wake cycle

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Video source:

https://www.youtube.com/watch?v=sbNkAcfNhh0

Factors that effect the sleep-wake cycle

Ways to help reduce jetlag

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AdolescenceDuring adolescence the sleep/wake pattern shifts towards the evening (phase delay).Also known as

delayed sleep onset.Particularly dangerous because adolescents need far more sleep than an adultsWhy does delayed sleep onset occur?Melatonin is a hormone that helps to induce sleep. During adolescence the release of this hormone is delayed for up to 2 hours.

Melatonin release is controlled by circadian rhythms but can also be effected by light.

It is also thought social factors can impact (e.g. homework demands, after school activities, internet).

Factors that effect the sleep-wake cycle

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Impact of delayed sleep onset

Can create a vicious cycle…

This can lead to circadian phase disorder which causes extreme difficulty falling asleep and sleepiness when waking in the morning.

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Treatment of circadian phase disorders

Light therapy can be used to re-set the body’s internal clock.

During light therapy your eyes are exposed to intense but safe amounts of light for a specific and regular length of time as artificial light may be used to affect the body clock in the same way that sunlight does.

Source:

Pixabayz

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25 hour cycle?

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The sleep-wake cycle shift during adolescence is typically caused by A. depression and the sleep debt. B. delayed release of the hormone adrenaline. C. delayed release of the hormone melatonin. D. overproduction of the hormone melatonin.

(VCAA 2013 Exam Q19)Multiple choice activity

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The sleep-wake cycle shift during adolescence is typically caused by A. depression and the sleep debt. B. delayed release of the hormone adrenaline. C. delayed release of the hormone melatonin. D. overproduction of the hormone melatonin.

(VCAA 2013 Exam Q19)Multiple choice - response

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What sort of rhythm is our sleep wake cycle on? Fast five: Question 1

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Answer:

Circadian

What sort of rhythm is our sleep wake cycle on?

Question 1

(Response)

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A shift from one country to another can result in negative effects known as _____________. Fast five: Question 2

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Answer:

Jetlag

A shift from one country to another can result in negative effects known as _____________.

Question 2

(Response)

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T/F: Genetics can play a role in circadian phase disorders.Fast five: Question 3

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Answer:

True

T/F: Genetics can play a role in circadian phase disorders.

Question 3

(Response)

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A delayed release of which hormone can cause delayed sleep onset in adolescence? Fast five: Question 4

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Answer:

Melatonin

A delayed release of which hormone can cause delayed sleep onset in adolescence?

Question 4

(Response)

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A great way to reset the internal body clock is thought to be through ___________ therapy. Fast five: Question 5

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Answer:

Light

A great way to reset the internal body clock is thought to be through ___________ therapy.

Question 5

(Response)

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VCE PSYCHOLOGY UNIT 4

Study design dot points:changes to a person’s sleep-wake cycle and susceptibility to experiencing a circadian phase disorder, including sleep-wake shifts in adolescence, shift work and jet lagthe interventions to treat sleep disorders including cognitive behavioural therapy (with reference to insomnia) and bright light therapy (with reference to circadian phase disorders).

Sleep-wake cycle

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The copyright in substantial portions of this material is owned by the Victorian Curriculum and Assessment Authority. Used with permission. The VCAA does not endorse this product and makes no warranties regarding the correctness or accuracy of its content. To the extent permitted by law, the VCAA excludes all liability for any loss or damage suffered or incurred as a result of accessing, using or relying on the content. Current and past VCAA exams and related content can be accessed directly at 

www.vcaa.vic.edu.au


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