Were you paying attention?

Which of the following doesn't have to be included in the definition of sleep?

• Reversible
• Perceptual disengagement
• Unresponsive
• Altered state of consciousness

Our biological rhythms determine...

• When we are awake
• Which decision to make
• Which direction to take

A circadian rhythm is defined as....

• be the ‘master’ biological clock that regulates the sleep-wake cycle
• changes in bodily functions or activities that occur as part of a cycle that is shorter than 24 hours
• changes in bodily functions or activities that occur as part of a cycle with a duration of 24 hours

Environmental cues are called what in relation to circadian rhythms

• Zietgebeers
• Zietgebers
• Entrained
• Entrainment

What is entrainment?

• How well you are able to visualise things
• When your body clock extends from 24-25 hours
• When environmental cues assist your body clock
• When a clock is reset and matched to an environmental cycle through the influence of Zietgebers

The SCN adjusts the sleep-wake cycle by....

• Releasing melatonin
• Receiving info about the amount of light entering the eye
• Inhibiting melatonin release

What is the result of placing participants in a timeless environment?

• Nothing
• They acted normally, just slept later
• Slept longer
• Their sleep-wake cycle shifted from 24 to 25 hours

What coordinates all biological rhythms to stay in synch?

• SCN
• Brain
• Hippocampus
• Brain Stem

The Pineal Gland is responsible for the release of.....

• Melanin
• Melatonin
• Microorganisms

When light is detected by the eyes what gets released

• Cortisol
• Stimulating hormones
• SCN
• Hypnic jerk